Re: Openshift SNO on Z (KVM)
On Mon, Oct 17, 2022 at 3:56 AM Christian Borntraeger < borntrae...@linux.ibm.com> wrote: > Am 17.10.22 um 05:24 schrieb Grzegorz Powiedziuk: > > Hello, > > has anyone tried installing openshift SNO (single node) on Z? > > I was able to install it on x86 using the official procedure from redhat. > > But going through the same process with KVM on Z doesn't work well so > far. > > > > I know it is not supported etc. This is just for testing/learning and > fun. > > Just reached out to our OCP team and in fact they have not touched SNO on > the > IBM zSystems platform so far. Smallest OCP entity they have tested and > therefore > support is 3-Node-Cluster. > Is there any usecase you follow except for fun and learning? A compelling > case > will help to get some focus on SNO. > > Thank you Christian. There is a potential use case - training/classes. Having an SNO for every student in class instead of a full 5 nodes cluster (or even 3) is much more feasible. And in general, I would think there are clients out there who don't have enough memory and IFLs at the moment on their mainframes to spin up an OCP cluster with 5 nodes so giving them SNO would give them at least a chance to try it out. 8vCPUs/32G/120G is much more appealing for a small POC :) Besides that, installing SNO, probably would be much easier and faster than installing a full cluster so less terrifying for new users who just want to see if it works with their apps. x86-ers have SNO. It would be nice to have it too :) -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Openshift SNO on Z (KVM)
Am 17.10.22 um 05:24 schrieb Grzegorz Powiedziuk: Hello, has anyone tried installing openshift SNO (single node) on Z? I was able to install it on x86 using the official procedure from redhat. But going through the same process with KVM on Z doesn't work well so far. I know it is not supported etc. This is just for testing/learning and fun. Just reached out to our OCP team and in fact they have not touched SNO on the IBM zSystems platform so far. Smallest OCP entity they have tested and therefore support is 3-Node-Cluster. Is there any usecase you follow except for fun and learning? A compelling case will help to get some focus on SNO. I am asking for any tips and clues so I don't go too deep into the rabbit hole thanks! Greg -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Openshift SNO on Z (KVM)
Hello, has anyone tried installing openshift SNO (single node) on Z? I was able to install it on x86 using the official procedure from redhat. But going through the same process with KVM on Z doesn't work well so far. I know it is not supported etc. This is just for testing/learning and fun. I am asking for any tips and clues so I don't go too deep into the rabbit hole thanks! Greg -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: RHEL 6.10 installation under KVM failure
On 19.05.21 19:59, Alan Haff wrote: I'm attempting to install RHEL 6.10 under KVM on a z13s and haven't been able to get the installer to IPL. When I try to IPL off of the ISO it fails with: LOADPARM=[] Using virtio-scsi. SCSI CD-ROM detected. ! Cannot IPL this ISO image ! When I try to do a direct kernel IPL it fails with: panic s390: core='0' psw-mask='0x000200018000' psw-addr='0x0002876e' reason='disabled-wait' I've been able to IPL the RHEL 8 ISO and I've been able to do a direct kernel IPL of the SLES 11 SP4 installer. Any suggestions on why RHEL 6.10 won't IPL? Two things here. The RHEL6 ISO is not bootable like the newer ones and RHEL6 does not have the necessary drivers to run under KVM (e.g. no s390x virtio drivers). For KVM you need RHEL7 or later, SLES11 or later or Ubuntu 16.04 or later. FWIW, RHEL 6.10 Maintenance Support II expired on Nov 30 2020 (basically it is out of support) so do not expect any updates here. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: RHEL 6.10 installation under KVM failure
I apologize-- I misread your note thinking you were trying to run RHEL 6.1. RHEL 6.10 should be supported on z13s. I'm afraid I don't have an answer to your issue & hope someone else does. Sorry, Fred _ Fred Bader, Advanced Technology Group (ATG / formerly WSC) - IBM Z IBM Corp, 470 Springpark Pl, Suite 950/1000, Herndon, VA 20170-5253 E-mail: fba...@us.ibm.com, Phone: 720-395-, Tieline: 676- IBM Z - "The cloud you want with the privacy and security you need" http://www.ibm.com/systems/z/ - http://www.ibm.com/z15 From: Fred Bader/Gaithersburg/IBM To: Linux on 390 Port Date: 05/19/2021 10:29 PM Subject:Re: [EXTERNAL] RHEL 6.10 installation under KVM failure I suspect the problem is RHEL 6.1 is too old to run on a z13s. According to the following sources, RHEL 6.6 or later is required to run on a z13s. https://www.ibm.com/support/pages/linux-ibm-z-tested-platforms https://access.redhat.com/ecosystem/hardware/2180941 I appears all versions of RHEL 8.x and SLES 11 SP3 or higher are supported on z13s and that's probably why you were able to IPL them. Try RHEL 6,6 or later and see if that will IPL. Regards, Fred _ Fred Bader, Advanced Technology Group (ATG / formerly WSC) - IBM Z IBM Corp, 470 Springpark Pl, Suite 950/1000, Herndon, VA 20170-5253 E-mail: fba...@us.ibm.com, Phone: 720-395-, Tieline: 676- IBM Z - "The cloud you want with the privacy and security you need" http://www.ibm.com/systems/z/ - http://www.ibm.com/z15 From: Alan Haff To: LINUX-390@VM.MARIST.EDU Date: 05/19/2021 09:50 PM Subject:[EXTERNAL] RHEL 6.10 installation under KVM failure Sent by:Linux on 390 Port I'm attempting to install RHEL 6.10 under KVM on a z13s and haven't been able to get the installer to IPL. When I try to IPL off of the ISO it fails with: LOADPARM=[] Using virtio-scsi. SCSI CD-ROM detected. ! Cannot IPL this ISO image ! When I try to do a direct kernel IPL it fails with: panic s390: core='0' psw-mask='0x000200018000' psw-addr='0x0002876e' reason='disabled-wait' I've been able to IPL the RHEL 8 ISO and I've been able to do a direct kernel IPL of the SLES 11 SP4 installer. Any suggestions on why RHEL 6.10 won't IPL? Thanks... -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: RHEL 6.10 installation under KVM failure
I suspect the problem is RHEL 6.1 is too old to run on a z13s. According to the following sources, RHEL 6.6 or later is required to run on a z13s. https://www.ibm.com/support/pages/linux-ibm-z-tested-platforms https://access.redhat.com/ecosystem/hardware/2180941 I appears all versions of RHEL 8.x and SLES 11 SP3 or higher are supported on z13s and that's probably why you were able to IPL them. Try RHEL 6,6 or later and see if that will IPL. Regards, Fred _ Fred Bader, Advanced Technology Group (ATG / formerly WSC) - IBM Z IBM Corp, 470 Springpark Pl, Suite 950/1000, Herndon, VA 20170-5253 E-mail: fba...@us.ibm.com, Phone: 720-395-, Tieline: 676- IBM Z - "The cloud you want with the privacy and security you need" http://www.ibm.com/systems/z/ - http://www.ibm.com/z15 From: Alan Haff To: LINUX-390@VM.MARIST.EDU Date: 05/19/2021 09:50 PM Subject:[EXTERNAL] RHEL 6.10 installation under KVM failure Sent by:Linux on 390 Port I'm attempting to install RHEL 6.10 under KVM on a z13s and haven't been able to get the installer to IPL. When I try to IPL off of the ISO it fails with: LOADPARM=[] Using virtio-scsi. SCSI CD-ROM detected. ! Cannot IPL this ISO image ! When I try to do a direct kernel IPL it fails with: panic s390: core='0' psw-mask='0x000200018000' psw-addr='0x0002876e' reason='disabled-wait' I've been able to IPL the RHEL 8 ISO and I've been able to do a direct kernel IPL of the SLES 11 SP4 installer. Any suggestions on why RHEL 6.10 won't IPL? Thanks... -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
RHEL 6.10 installation under KVM failure
I'm attempting to install RHEL 6.10 under KVM on a z13s and haven't been able to get the installer to IPL. When I try to IPL off of the ISO it fails with: LOADPARM=[] Using virtio-scsi. SCSI CD-ROM detected. ! Cannot IPL this ISO image ! When I try to do a direct kernel IPL it fails with: panic s390: core='0' psw-mask='0x000200018000' psw-addr='0x0002876e' reason='disabled-wait' I've been able to IPL the RHEL 8 ISO and I've been able to do a direct kernel IPL of the SLES 11 SP4 installer. Any suggestions on why RHEL 6.10 won't IPL? Thanks... -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Moving a Linux guest from z/VM to KVM?
I'd like to point out that there's a general trend toward workload containerization, and a big driver is that it's easier to move container images around than whole operating system instances. Thus if you shift workloads into container images, you should end up with fewer, skinnier OS instances that you don't care as much about moving around since it's easy enough to (re)create them. That's the theory, anyway. - - - - - - - - - - Timothy Sipples I.T. Architect Executive Digital Asset & Other Industry Solutions IBM Z & LinuxONE - - - - - - - - - - E-Mail: sipp...@sg.ibm.com -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 smime.p7s Description: S/MIME Cryptographic Signature
Re: Moving a Linux guest from z/VM to KVM?
Closing the loop... I got the system up and running under KVM. I hadn't seen Viktor's message yet but I did basically the same steps. Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Viktor Mihajlovski: >I assume it's SLES, It is. I'm starting with a SLES guest but I have RHEL guests that I want to move as well. >...because as far as I know, with RHEL the virtio drivers are mandatory. Good to know. That'll make things easier for the RHEL systems. >Should work if you add the following lines to /etc/dracut.conf (before >cloning): > > add_dracutmodules+="dasd_rules" > add_drivers+="virtio_blk dasd_eckd_mod" I added a lot more drivers because I compared the list of loaded drivers on a system that I built from scratch under KVM with the loaded drivers on the z/VM guest I wanted to move and added all of the missing drivers. add_drivers+="cdrom crc32_vx_s390 failover net_failover rng_core sr_mod virtio_balloon virtio_blk virtio_net virtio_rng virtio_scsi" Probably overkill. I'll try again with just virtio_blk. >and then run > dracut -f > grub2-zipl-setup I wanted to update grub to remove the resume=... from GRUB_CMDLINE_LINUX_DEFAULT so I ran grub2-mkconfig instead of dracut, then grub2-zipl-setup to get zipl updated. The rest of the process went quite smoothly. After I made the changes on the z/VM guest I shut it down, re-cloned the DASD, and then IPLed the guest on KVM. When it came up I logged on to the console to create the config for the new network device and I was good to go. Thanks everyone for your help... -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Moving a Linux guest from z/VM to KVM?
On 11/30/20 11:34 PM, Christian Borntraeger wrote: On 30.11.20 21:10, Mark Post wrote: On 11/30/20 1:16 PM, Alan Haff wrote: I have a number of Linux guests running under z/VM. I'd like to move some of them to a KVM host running in another LPAR. Naively I tried DDRing a guest's disks to new volumes and IPLing off of the new volumes. No luck, the virtio modules aren't available in the guest so it can't see any DASD. Has someone put together a recipe for moving a guest from z/VM to KVM? Or am I heading down a dead end? I'm not aware of one, but I wouldn't call it a dead end, either. As a first step, I would rebuild the initrd with whatever parameters are needed to include the virtio drivers, then try again. I have to think that /etc/fstab entries would need to be looked at as well. Look at the virtualization cookbook 5 from the redbooks. http://www.redbooks.ibm.com/abstracts/sg248463.html?Open chapter 8.7 contains information how to configure a system as such that it can be moved forth and back between LPAR and KVM. That should then also be possible with z/VM. If done right that should allow you to move the guest forth and back between KVM and z/VM. Basic idea: make sure the initrd has classic (DASD) drivers and the virtio-blk driver and then use driver independent names for the partitions. CC Viktor, do we still have our presentation flying around somewhere? I co-authored Chapter 8 and did much of the testing. I agree with Christian that z/VM -> KVM is possible. Chapter 8 starts with a SLES KVM VM running on a SLES KVM host running in an LPAR. The SLES OS is installed on FCP SCSI disks. The KVM VM and host are shutdown and the SLES OS on the SCSI disk is IPL'd in the same LPAR. Using DDR to duplicate the z/VM guest to the new DASDs on your KVM host is a good first step. The good thing about this approach is that you can continue to run the z/VM guest as you work through the hurdles to get the KVM host to boot. I suggest keeping the device ids of the OS disks defined in the KVM guest the same as it is in z/VM. I encourage you to review the virt-install command in the shell script in Appendix B as an example how to define the KVM VM. I would define the NIC with the same device id but add that to a NAT'd KVM network. This will allow the network of the new KVM VM to start but will not step all over the IP address being used while the z/VM guest is running at the same time. I also agree with Mark that it might be necessary to rebuild the initrd so that virtio drivers are available during IPL. Regards, Mike -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Moving a Linux guest from z/VM to KVM?
On 12/1/20 5:25 PM, Alan Haff wrote: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Richard J Moore: In this case I think you're saying have two configurations - one under KVM and another under zVM. Then manually co-ordinate the sharing or resources but ensure that you don't have both guests logged on simultaneously. Right. Both LPARs - the one running z/VM and the one running KVM - share the same DS8800. I created new volumes, shutdown the z/VM guest, cloned the z/VM guest's DASD to the new volumes, and then brought the new volumes online to the KVM LPAR and attempted to IPL the guest from them. I matched the DASD addresses in the definition of the KVM guest to the DASD addresses in the z/VM guest so I'm hoping /etc/fstab will be good to go. z/VM: DEDICATE 100 7458 DEDICATE 101 7459 KVM: and After I get the KVM guest to IPL successfully I'll re-IP it and then I should be able to have both guests up at the same time (although my goal is to eventually replace the z/VM guest with the KVM guest). I assume it's SLES, because as far as I know, with RHEL the virtio drivers are mandatory. Should work if you add the following lines to /etc/dracut.conf (before cloning): add_dracutmodules+="dasd_rules" add_drivers+="virtio_blk dasd_eckd_mod" and then run dracut -f grub2-zipl-setup (The DASD stuff in the initramfs is not strictly needed, but you're on the safe side if you ever want to IPL in LPAR or z/VM) Maybe to obvious, but don't forget to assign unique IP addresses to the KVM guest to avoid networking confusion. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- Kind Regards, Viktor -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Moving a Linux guest from z/VM to KVM?
Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Richard J Moore: >In this case I think you're saying have two configurations - one under KVM >and another under zVM. Then manually co-ordinate the sharing or resources >but ensure that you don't have both guests logged on simultaneously. Right. Both LPARs - the one running z/VM and the one running KVM - share the same DS8800. I created new volumes, shutdown the z/VM guest, cloned the z/VM guest's DASD to the new volumes, and then brought the new volumes online to the KVM LPAR and attempted to IPL the guest from them. I matched the DASD addresses in the definition of the KVM guest to the DASD addresses in the z/VM guest so I'm hoping /etc/fstab will be good to go. z/VM: DEDICATE 100 7458 DEDICATE 101 7459 KVM: and After I get the KVM guest to IPL successfully I'll re-IP it and then I should be able to have both guests up at the same time (although my goal is to eventually replace the z/VM guest with the KVM guest). -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Moving a Linux guest from z/VM to KVM?
Linux on 390 Port wrote on 01/12/2020 11:51:37: > From: Christian Borntraeger > To: LINUX-390@VM.MARIST.EDU > Date: 01/12/2020 11:55 > Subject: [EXTERNAL] Re: Moving a Linux guest from z/VM to KVM? > Sent by: Linux on 390 Port > > On 01.12.20 12:07, Richard J Moore wrote: > > Is that really possible (KVM guest <-> z/VM guest)? > > As far as I am aware the KVM and zVM hypervisors share no metadata > > regarding the guest's set up. Nor do they share any of the protocols used > > in live (or dead) guest relocation. > > > > Am I misunderstanding the question? > > I was not talking about live migration. I was more talking about: > site A: graceful shutdoen > size B: IPL > > and this is possible as long as the dasd is available on both sides > and your network routing can tolerate this (or the guest can > tolerate to be in different networks depending on the IPL). OK, that's not really a migration - dead or alive - in zVM terms. Under zVM dead guest migration doesn't require the guest to logoff then logon under another hypervisor. We would still move their storage and configuration whether IPL'd or not. In this case I think you're saying have two configurations - one under KVM and another under zVM. Then manually co-ordinate the sharing or resources but ensure that you don't have both guests logged on simultaneously. > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit > INVALID URI REMOVED > u=http-3A__www2.marist.edu_htbin_wlvindex-3FLINUX-2D390&d=DwICaQ&c=jf_iaSHvJObTbx- > siA1ZOg&r=hsO4Lk6XlJWxPC1OayT7oG3wyw3H8GpACVStAsDQDSM&m=az6AjYLgWfcZrMl0ChAUXY9yxQl40O8NsLSRjQP90Co&s=mtLjWfIPT9equ2k8EPtiQpQMWrxnLGl0JNLT963UanA&e= > Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Moving a Linux guest from z/VM to KVM?
On 01.12.20 12:07, Richard J Moore wrote: > Is that really possible (KVM guest <-> z/VM guest)? > As far as I am aware the KVM and zVM hypervisors share no metadata > regarding the guest's set up. Nor do they share any of the protocols used > in live (or dead) guest relocation. > > Am I misunderstanding the question? I was not talking about live migration. I was more talking about: site A: graceful shutdoen size B: IPL and this is possible as long as the dasd is available on both sides and your network routing can tolerate this (or the guest can tolerate to be in different networks depending on the IPL). -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Moving a Linux guest from z/VM to KVM?
Is that really possible (KVM guest <-> z/VM guest)? As far as I am aware the KVM and zVM hypervisors share no metadata regarding the guest's set up. Nor do they share any of the protocols used in live (or dead) guest relocation. Am I misunderstanding the question? Richard Richard J Moore -- Z millicode & zVM development Ext: (M) 37264807/ (L) 37247072; Cell: (+44) (0)7739-875237 Office: (+44) (0)1962-817072 IBM Academy Member - http://www-03.ibm.com/ibm/academy/index.html Linkedin Profile http://uk.linkedin.com/pub/richard-j-moore-fiet-fbcs-ceng-citp/4/4b1/748 From: Christian Borntraeger To: LINUX-390@VM.MARIST.EDU Date: 01/12/2020 06:35 Subject:[EXTERNAL] Re: Moving a Linux guest from z/VM to KVM? Sent by:Linux on 390 Port On 30.11.20 21:10, Mark Post wrote: > On 11/30/20 1:16 PM, Alan Haff wrote: >> I have a number of Linux guests running under z/VM. I'd like to move some of them to a KVM host running in another LPAR. Naively I tried DDRing a guest's disks to new volumes and IPLing off of the new volumes. No luck, the virtio modules aren't available in the guest so it can't see any DASD. >> >> Has someone put together a recipe for moving a guest from z/VM to KVM? Or am I heading down a dead end? > > I'm not aware of one, but I wouldn't call it a dead end, either. As a > first step, I would rebuild the initrd with whatever parameters are > needed to include the virtio drivers, then try again. I have to think > that /etc/fstab entries would need to be looked at as well. Look at the virtualization cookbook 5 from the redbooks. http://www.redbooks.ibm.com/abstracts/sg248463.html?Open chapter 8.7 contains information how to configure a system as such that it can be moved forth and back between LPAR and KVM. That should then also be possible with z/VM. If done right that should allow you to move the guest forth and back between KVM and z/VM. Basic idea: make sure the initrd has classic (DASD) drivers and the virtio-blk driver and then use driver independent names for the partitions. CC Viktor, do we still have our presentation flying around somewhere? -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Moving a Linux guest from z/VM to KVM?
On 30.11.20 21:10, Mark Post wrote: > On 11/30/20 1:16 PM, Alan Haff wrote: >> I have a number of Linux guests running under z/VM. I'd like to move some of >> them to a KVM host running in another LPAR. Naively I tried DDRing a guest's >> disks to new volumes and IPLing off of the new volumes. No luck, the virtio >> modules aren't available in the guest so it can't see any DASD. >> >> Has someone put together a recipe for moving a guest from z/VM to KVM? Or am >> I heading down a dead end? > > I'm not aware of one, but I wouldn't call it a dead end, either. As a > first step, I would rebuild the initrd with whatever parameters are > needed to include the virtio drivers, then try again. I have to think > that /etc/fstab entries would need to be looked at as well. Look at the virtualization cookbook 5 from the redbooks. http://www.redbooks.ibm.com/abstracts/sg248463.html?Open chapter 8.7 contains information how to configure a system as such that it can be moved forth and back between LPAR and KVM. That should then also be possible with z/VM. If done right that should allow you to move the guest forth and back between KVM and z/VM. Basic idea: make sure the initrd has classic (DASD) drivers and the virtio-blk driver and then use driver independent names for the partitions. CC Viktor, do we still have our presentation flying around somewhere? -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Moving a Linux guest from z/VM to KVM?
On 11/30/20 1:16 PM, Alan Haff wrote: > I have a number of Linux guests running under z/VM. I'd like to move some of > them to a KVM host running in another LPAR. Naively I tried DDRing a guest's > disks to new volumes and IPLing off of the new volumes. No luck, the virtio > modules aren't available in the guest so it can't see any DASD. > > Has someone put together a recipe for moving a guest from z/VM to KVM? Or am > I heading down a dead end? I'm not aware of one, but I wouldn't call it a dead end, either. As a first step, I would rebuild the initrd with whatever parameters are needed to include the virtio drivers, then try again. I have to think that /etc/fstab entries would need to be looked at as well. I seem to recall that Micro Focus acquired the Platespin products. It might be instructive to see what those do for Intel systems that are to be moved to KVM as a model. Mark Post -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Moving a Linux guest from z/VM to KVM?
I have a number of Linux guests running under z/VM. I'd like to move some of them to a KVM host running in another LPAR. Naively I tried DDRing a guest's disks to new volumes and IPLing off of the new volumes. No luck, the virtio modules aren't available in the guest so it can't see any DASD. Has someone put together a recipe for moving a guest from z/VM to KVM? Or am I heading down a dead end? -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM question.
Of course z/VM can run any/all IBM Z operating systems, including both z/VSE and Linux. And it can do so within even a single z/VM LPAR. There are some significant resource and operational efficiencies in that sort of configuration. In 2017 IBM announced general availability of sub-capacity licensing for z/VM, so you can now license z/VM one engine at a time. Previously you had to license z/VM for all the IFLs, all the CPs, or both, per machine. Let's suppose for example you have 1 IFL and 3 CPs -- machine capacity model 3907-C03 with 1 IFL as an example. You could configure a z/VM LPAR that spans the IFL and one CP (shared or dedicated), and that would require only 2 engines of z/VM licensing (down from the 4 previously required in this scenario). z/VSE could then run both in its own LPAR(s) and within the z/VM LPAR. Many variations are possible, of course, but that's one sample variation. Either way (or both), I very much like the idea of using a second level hypervisor to run Linux, and to do so right at the beginning. Then you really don't have to give much thought to adding more Linux instances, even if the "new" Linux instances are for release upgrade reasons. It's not hard to do. In fact, in some ways it's easier to start off with a second level hypervisor. - - - - - - - - - - Timothy Sipples I.T. Architect Executive Digital Asset & Other Industry Solutions IBM Z & LinuxONE - - - - - - - - - - E-Mail: sipp...@sg.ibm.com -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM question.
On 30.06.20 22:19, Tom Huegel wrote: > This has probably been discussed quite a bit but I wanted to ask for some > real user feedback. > > I have a customer that is interested a POC of z/VSE zLINUX VTAPE. > Unfortunately they do now have z/VM so the zLINUX would have to be in an > LPAR. So the question is 'do I gain/lose anything using KVM as the > hypervisor in the zLINUX LPAR?'. As the zLINUX VTAPE application is just a Java applicaition that needs network and disk access I do not see a reason why it could not run in a KVM guest. I guess you have to ask yourself the question, will there be additional things that you might want to run on zLinux to support VSE. I think you got plenty of ideas in the recent mail threads. Then of course a hypervisor is going to help you. One nice thing with KVM is that you can actually add that later. So having one workload in an LPAR and then addding a KVM guest in the same LPAR to host another one would just work. Not that this is something that I would suggest. But the point is: no matter if you run Linux in LPAR or Linux under KVM. You always start with a Linux in LPAR and can then move to KVM or not. With some preplanning for the future you probably want to put the first workload also in a KVM guest to have equivalent management for all workloads (e.g. use CPU shares or capping). Regarding the downside, of course every hypervisor will add a small overhead. It starts with the memory footprint of an additional Linux kernel and it ends with the cost of virtualizing I/O. Does this matter for the vtape use case? Probably not. As an alternative that depends on your requirements regarding isolation you could put the workloads in containers. But this is only "nice" when the workload is already containerized. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM question.
Tom: I believe you meant they do "not" have z/VM? If you are just looking at this to run VTAPE you don't need a hypervisor. Run the Linux image in an LPAR. My interpretation is that they don't have an IFL either so "native" Linux would be easier to start with. If they decide to buy an IFL in the future, IBM offers z/VM at a large discount when acquired with the IFL. There are several attractive offerings to help z/VSE customers get started with Linux on Z. Jim Elliott Senior IT Consultant - GlassHouse Systems Inc. On Tue, Jun 30, 2020 at 4:21 PM Tom Huegel wrote: > This has probably been discussed quite a bit but I wanted to ask for some > real user feedback. > > I have a customer that is interested a POC of z/VSE zLINUX VTAPE. > Unfortunately they do now have z/VM so the zLINUX would have to be in an > LPAR. So the question is 'do I gain/lose anything using KVM as the > hypervisor in the zLINUX LPAR?'. > > Thanks > Tom > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM question.
Others might be more specific about z/VM advantages over KVM ... but you certainly lose your knowledge of z/VM to manage and control guests and need to use a KVM based model for that.. whether that is an issue or not is about your comfort level with both solutions on z. (and probably others you work with?). Having said that - I've worked with IBM customers in many POCs where the licensing for our solution was supplied on a trial basis - just for that purpose -- so I'd think the z/VM licensing could be managed this way.. Sticking with a horse you know makes things quicker than learning to ride a new one... and in my experience - expedience always seems to be a part of any POC... :) And -- any solution you come up with can always get shifted to an LPAR (or LPARs) fairly easily with the correct IOCONFIG for the devices... Use dedicated volumes under z/VM if you know you'll be moving off it... just in case you need to boot Linux native. (or 0 to END minidisks) Scott Rohling Best of luck - Scott On Tue, Jun 30, 2020 at 1:20 PM Tom Huegel wrote: > This has probably been discussed quite a bit but I wanted to ask for some > real user feedback. > > I have a customer that is interested a POC of z/VSE zLINUX VTAPE. > Unfortunately they do now have z/VM so the zLINUX would have to be in an > LPAR. So the question is 'do I gain/lose anything using KVM as the > hypervisor in the zLINUX LPAR?'. > > Thanks > Tom > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
KVM question.
This has probably been discussed quite a bit but I wanted to ask for some real user feedback. I have a customer that is interested a POC of z/VSE zLINUX VTAPE. Unfortunately they do now have z/VM so the zLINUX would have to be in an LPAR. So the question is 'do I gain/lose anything using KVM as the hypervisor in the zLINUX LPAR?'. Thanks Tom -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Redbook draft: The Virtualization Cookbook for IBM Z Volume 5: KVM
yes, the Redbooks are essential - the official docs are voluminous but not everywhere particularly helpful. I do wish the Redbooks were updated more frequently - to coincide with releases for example (and to correct errors - there are a few). Maybe have a wiki to go with each one? René. > On 8 Apr 2020, at 14:37, Ray Mansell wrote: > > How can it possibly be 15+ years!! In any case, congratulations - it has > proved to be a great resource. > > Ray > > On 4/8/2020 06:35, Michael MacIsaac wrote: >> Hello list, >> >> Wow, The Virtualization Cookbook still alive and kicking. Nice work to all >> involved! I remember working on the first one more than 15 years ago. >> >>- Sir Mike the Chef of Books >> >> On Tue, Apr 7, 2020 at 9:42 AM Christian Borntraeger >> wrote: >> >>> There is now a redbook draft for a KVM cookbook: >>> >>> http://www.redbooks.ibm.com/Redbooks.nsf/RedpieceAbstracts/sg248463.html?Open >>> >>> As this is still in draft state review feedback is still possible: >>> redbo...@us.ibm.com >>> >>> Christian >>> >>> -- >>> For LINUX-390 subscribe / signoff / archive access instructions, >>> send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or >>> visit >>> http://www2.marist.edu/htbin/wlvindex?LINUX-390 >>> >> >> -- >> -Mike MacIsaac >> >> -- >> For LINUX-390 subscribe / signoff / archive access instructions, >> send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or >> visit >> http://www2.marist.edu/htbin/wlvindex?LINUX-390 > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Redbook draft: The Virtualization Cookbook for IBM Z Volume 5: KVM
How can it possibly be 15+ years!! In any case, congratulations - it has proved to be a great resource. Ray On 4/8/2020 06:35, Michael MacIsaac wrote: Hello list, Wow, The Virtualization Cookbook still alive and kicking. Nice work to all involved! I remember working on the first one more than 15 years ago. - Sir Mike the Chef of Books On Tue, Apr 7, 2020 at 9:42 AM Christian Borntraeger wrote: There is now a redbook draft for a KVM cookbook: http://www.redbooks.ibm.com/Redbooks.nsf/RedpieceAbstracts/sg248463.html?Open As this is still in draft state review feedback is still possible: redbo...@us.ibm.com Christian -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- -Mike MacIsaac -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Redbook draft: The Virtualization Cookbook for IBM Z Volume 5: KVM
Hello list, Wow, The Virtualization Cookbook still alive and kicking. Nice work to all involved! I remember working on the first one more than 15 years ago. - Sir Mike the Chef of Books On Tue, Apr 7, 2020 at 9:42 AM Christian Borntraeger wrote: > There is now a redbook draft for a KVM cookbook: > > http://www.redbooks.ibm.com/Redbooks.nsf/RedpieceAbstracts/sg248463.html?Open > > As this is still in draft state review feedback is still possible: > redbo...@us.ibm.com > > Christian > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > -- -Mike MacIsaac -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Redbook draft: The Virtualization Cookbook for IBM Z Volume 5: KVM
There is now a redbook draft for a KVM cookbook: http://www.redbooks.ibm.com/Redbooks.nsf/RedpieceAbstracts/sg248463.html?Open As this is still in draft state review feedback is still possible: redbo...@us.ibm.com Christian -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Linux on Z and LinuxONE publication: KVM Virtual Server Management
The following Linux on Z and LinuxONE publication is available: KVM Virtual Server Management Audience: KVM virtual server administrator Understand how to set up, configure, and operate Linux on KVM instances and their virtual devices running on the KVM host and IBM Z hardware This major update includes information about VFIO pass-through devices, virtual server setup with the virt-install command, setting up virtual switches with VNIC characteristics, and other features that are available with the latest versions of QEMU and libvirt. See: http://public.dhe.ibm.com/software/dw/linux390/docu/l19bva05.pdf Dorothea Matthaeus Linux on Z and LinuxONE Information Development IBM Deutschland Research and Development GmbH -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Linux on Z and LinuxONE publication: KVM Virtual Server Management
The following Linux on Z and LinuxONE publication is available: KVM Virtual Server Management Audience: KVM virtual server administrator Understand how to set up, configure, and operate Linux on KVM instances and their virtual devices running on the KVM host and IBM Z hardware This major update includes information about VFIO pass-through devices, virtual server setup with the virt-install command, setting up virtual switches with VNIC characteristics, and other features that are available with the latest versions of QEMU and libvirt. See: http://public.dhe.ibm.com/software/dw/linux390/docu/l19bva05.pdf Dorothea Matthaeus Linux on Z and LinuxONE Information Development IBM Deutschland Research and Development GmbH -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM only supports 4guests
Hello, I just want to point out that a SUSE Linux Enterprise Server for IBM Z and LinuxONE subscription does NOT limit the number of KVM VMs. Regards, Mike -- Mike Friesenegger Solution Architect IBM Global Alliance SUSE mi...@suse.com<mailto:mi...@suse.com> (P)+1 303.249.0817 [https://www.suse.com/common/img/logo.png] On 10/22/19 7:29 AM, Robert J Brenneman wrote: Barton - you are correct. RH only supports 'unlimited' numbers of virtual machines on their dedicated hypervisor offering which is RHV ( used to be RHEV ). RHV is not yet available on s390x. I am not a part of the team that can say whether it will become available for s390x, either, so your guess is as good as mine about that. On Tue, Oct 22, 2019 at 8:53 AM Bfishing <mailto:bfish...@gmail.com> wrote: I wonder if that winds up depending on where you or they run it? - I stated it that way knowing that IBM is pushing KVM on zCloud over just offering z/VM as a Service (zaas) for running Linux guest like they should be! On Mon, Oct 21, 2019 at 9:39 PM Barton <mailto:bar...@velocitysoftware.com> wrote: Right. That’s what I’m hearing , that ‘unlimited ‘ is not available on Z Barton On Oct 22, 2019, at 12:27 AM, Jim Elliott <mailto:jlelliot...@gmail.com> wrote: Sam: The Red Hat site above does not make sense to me as there is only ONE version of RHEL available for IBM Z. That is, Red Hat Enterprise Linux with Unlimited Guests and Red Hat Enterprise Virtualization are NOT available for IBM Z. Jim Elliott Senior Consultant - GlassHouse Systems Inc. On Mon, Oct 21, 2019 at 6:07 PM Cohen, Sam <mailto:sam.co...@lrs.com> wrote: Barton, It depends on the licensed version of Redhat that you have. From the footnote: This guest limit does not apply to Red Hat Enterprise Linux with Unlimited Guests. There is no guest limit for Red Hat Enterprise Virtualization, Red Hat Enterprise Linux OpenStack Platform, and the Red Hat Enterprise Linux with Smart Virtualization bundle. Thanks, Sam (217) 862-9227 (office) (602) 327-2134 (cell) -Original Message- From: Linux on 390 Port <mailto:LINUX-390@VM.MARIST.EDU> On Behalf Of Barton Sent: Monday, October 21, 2019 2:54 PM To: LINUX-390@VM.MARIST.EDU<mailto:LINUX-390@VM.MARIST.EDU> Subject: KVM only supports 4guests I’m hearing at gse that red hat on z only supports 4 guests on kvm on z? Here’s a link, am i missIng something? https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Faccess.redhat.com%2Farticles%2Frhel-kvm-limits&data=02%7C01%7CSam.Cohen%40LRS.COM%7C48d4b88bb27041ea857c08d75671af04%7C62af9ccc42164ae2a1d306614c59c315%7C0%7C0%7C637072918605890971&sdata=g%2FPSoSxYqh2SgqhLX5V5KrvdkgFPSuWcvqrkupgaKj0%3D&reserved=0 Barton -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu<mailto:lists...@vm.marist.edu> with the message: INFO LINUX-390 or visit https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww2.marist.edu%2Fhtbin%2Fwlvindex%3FLINUX-390&data=02%7C01%7CSam.Cohen%40LRS.COM%7C48d4b88bb27041ea857c08d75671af04%7C62af9ccc42164ae2a1d306614c59c315%7C0%7C0%7C637072918605890971&sdata=imwx9PkkgF74LtoqU5u9d2mv2nZ0HgHu5OXuUlEwqVo%3D&reserved=0 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu<mailto:lists...@vm.marist.edu> with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu<mailto:lists...@vm.marist.edu> with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu<mailto:lists...@vm.marist.edu> with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- <º>`·.¸¸´¯`·.¸.·´¯`·...¸>(((º> .·´¯`·.><º>`·.¸¸.·´¯`·.¸.·´¯`·...¸><º> <>< Go fishing ><> -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu<mailto:lists...@vm.marist.edu> with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM only supports 4guests
Barton - you are correct. RH only supports 'unlimited' numbers of virtual machines on their dedicated hypervisor offering which is RHV ( used to be RHEV ). RHV is not yet available on s390x. I am not a part of the team that can say whether it will become available for s390x, either, so your guess is as good as mine about that. On Tue, Oct 22, 2019 at 8:53 AM Bfishing wrote: > I wonder if that winds up depending on where you or they run it? > - I stated it that way knowing that IBM is pushing KVM on zCloud over just > offering z/VM as a Service (zaas) for running Linux guest like they should > be! > > On Mon, Oct 21, 2019 at 9:39 PM Barton > wrote: > > > Right. That’s what I’m hearing , that ‘unlimited ‘ is not available on Z > > > > Barton > > > > > > > On Oct 22, 2019, at 12:27 AM, Jim Elliott > wrote: > > > > > > Sam: > > > > > > The Red Hat site above does not make sense to me as there is only ONE > > > version of RHEL available for IBM Z. That is, Red Hat Enterprise Linux > > with > > > Unlimited Guests and Red Hat Enterprise Virtualization are NOT > available > > > for IBM Z. > > > > > > Jim Elliott > > > Senior Consultant - GlassHouse Systems Inc. > > > > > > > > > > > >> On Mon, Oct 21, 2019 at 6:07 PM Cohen, Sam wrote: > > >> > > >> Barton, > > >> > > >> It depends on the licensed version of Redhat that you have. From the > > >> footnote: > > >> > > >> This guest limit does not apply to Red Hat Enterprise Linux with > > Unlimited > > >> Guests. There is no guest limit for Red Hat Enterprise Virtualization, > > Red > > >> Hat Enterprise Linux OpenStack Platform, and the Red Hat Enterprise > > Linux > > >> with Smart Virtualization bundle. > > >> > > >> Thanks, > > >> > > >> Sam > > >> (217) 862-9227 (office) > > >> (602) 327-2134 (cell) > > >> > > >> -Original Message- > > >> From: Linux on 390 Port On Behalf Of Barton > > >> Sent: Monday, October 21, 2019 2:54 PM > > >> To: LINUX-390@VM.MARIST.EDU > > >> Subject: KVM only supports 4guests > > >> > > >> I’m hearing at gse that red hat on z only supports 4 guests on kvm on > z? > > >> Here’s a link, am i missIng something? > > >> > > > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Faccess.redhat.com%2Farticles%2Frhel-kvm-limits&data=02%7C01%7CSam.Cohen%40LRS.COM%7C48d4b88bb27041ea857c08d75671af04%7C62af9ccc42164ae2a1d306614c59c315%7C0%7C0%7C637072918605890971&sdata=g%2FPSoSxYqh2SgqhLX5V5KrvdkgFPSuWcvqrkupgaKj0%3D&reserved=0 > > >> > > >> Barton > > >> > > >> > > >> -- > > >> For LINUX-390 subscribe / signoff / archive access instructions, send > > >> email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > > visit > > >> > > >> > > > https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww2.marist.edu%2Fhtbin%2Fwlvindex%3FLINUX-390&data=02%7C01%7CSam.Cohen%40LRS.COM%7C48d4b88bb27041ea857c08d75671af04%7C62af9ccc42164ae2a1d306614c59c315%7C0%7C0%7C637072918605890971&sdata=imwx9PkkgF74LtoqU5u9d2mv2nZ0HgHu5OXuUlEwqVo%3D&reserved=0 > > >> > > >> -- > > >> For LINUX-390 subscribe / signoff / archive access instructions, > > >> send email to lists...@vm.marist.edu with the message: INFO LINUX-390 > > or > > >> visit > > >> http://www2.marist.edu/htbin/wlvindex?LINUX-390 > > >> > > > > > > -- > > > For LINUX-390 subscribe / signoff / archive access instructions, > > > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 > > or visit > > > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > > > > -- > > For LINUX-390 subscribe / signoff / archive access instructions, > > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > > visit > > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > > > > > -- > > ><º>`·.¸¸´¯`·.¸.·´¯`·...¸>(((º> > .·´¯`·.><º>`·.¸¸.·´¯`·.¸.·´¯`·...¸><º> > > <>< Go fishing ><> > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > -- Jay Brenneman -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM only supports 4guests
I wonder if that winds up depending on where you or they run it? - I stated it that way knowing that IBM is pushing KVM on zCloud over just offering z/VM as a Service (zaas) for running Linux guest like they should be! On Mon, Oct 21, 2019 at 9:39 PM Barton wrote: > Right. That’s what I’m hearing , that ‘unlimited ‘ is not available on Z > > Barton > > > > On Oct 22, 2019, at 12:27 AM, Jim Elliott wrote: > > > > Sam: > > > > The Red Hat site above does not make sense to me as there is only ONE > > version of RHEL available for IBM Z. That is, Red Hat Enterprise Linux > with > > Unlimited Guests and Red Hat Enterprise Virtualization are NOT available > > for IBM Z. > > > > Jim Elliott > > Senior Consultant - GlassHouse Systems Inc. > > > > > > > >> On Mon, Oct 21, 2019 at 6:07 PM Cohen, Sam wrote: > >> > >> Barton, > >> > >> It depends on the licensed version of Redhat that you have. From the > >> footnote: > >> > >> This guest limit does not apply to Red Hat Enterprise Linux with > Unlimited > >> Guests. There is no guest limit for Red Hat Enterprise Virtualization, > Red > >> Hat Enterprise Linux OpenStack Platform, and the Red Hat Enterprise > Linux > >> with Smart Virtualization bundle. > >> > >> Thanks, > >> > >> Sam > >> (217) 862-9227 (office) > >> (602) 327-2134 (cell) > >> > >> -Original Message- > >> From: Linux on 390 Port On Behalf Of Barton > >> Sent: Monday, October 21, 2019 2:54 PM > >> To: LINUX-390@VM.MARIST.EDU > >> Subject: KVM only supports 4guests > >> > >> I’m hearing at gse that red hat on z only supports 4 guests on kvm on z? > >> Here’s a link, am i missIng something? > >> > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Faccess.redhat.com%2Farticles%2Frhel-kvm-limits&data=02%7C01%7CSam.Cohen%40LRS.COM%7C48d4b88bb27041ea857c08d75671af04%7C62af9ccc42164ae2a1d306614c59c315%7C0%7C0%7C637072918605890971&sdata=g%2FPSoSxYqh2SgqhLX5V5KrvdkgFPSuWcvqrkupgaKj0%3D&reserved=0 > >> > >> Barton > >> > >> > >> -- > >> For LINUX-390 subscribe / signoff / archive access instructions, send > >> email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > >> > >> > https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww2.marist.edu%2Fhtbin%2Fwlvindex%3FLINUX-390&data=02%7C01%7CSam.Cohen%40LRS.COM%7C48d4b88bb27041ea857c08d75671af04%7C62af9ccc42164ae2a1d306614c59c315%7C0%7C0%7C637072918605890971&sdata=imwx9PkkgF74LtoqU5u9d2mv2nZ0HgHu5OXuUlEwqVo%3D&reserved=0 > >> > >> -- > >> For LINUX-390 subscribe / signoff / archive access instructions, > >> send email to lists...@vm.marist.edu with the message: INFO LINUX-390 > or > >> visit > >> http://www2.marist.edu/htbin/wlvindex?LINUX-390 > >> > > > > -- > > For LINUX-390 subscribe / signoff / archive access instructions, > > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 > or visit > > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > -- ><º>`·.¸¸´¯`·.¸.·´¯`·...¸>(((º> .·´¯`·.><º>`·.¸¸.·´¯`·.¸.·´¯`·...¸><º> <>< Go fishing ><> -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM only supports 4guests
Right. That’s what I’m hearing , that ‘unlimited ‘ is not available on Z Barton > On Oct 22, 2019, at 12:27 AM, Jim Elliott wrote: > > Sam: > > The Red Hat site above does not make sense to me as there is only ONE > version of RHEL available for IBM Z. That is, Red Hat Enterprise Linux with > Unlimited Guests and Red Hat Enterprise Virtualization are NOT available > for IBM Z. > > Jim Elliott > Senior Consultant - GlassHouse Systems Inc. > > > >> On Mon, Oct 21, 2019 at 6:07 PM Cohen, Sam wrote: >> >> Barton, >> >> It depends on the licensed version of Redhat that you have. From the >> footnote: >> >> This guest limit does not apply to Red Hat Enterprise Linux with Unlimited >> Guests. There is no guest limit for Red Hat Enterprise Virtualization, Red >> Hat Enterprise Linux OpenStack Platform, and the Red Hat Enterprise Linux >> with Smart Virtualization bundle. >> >> Thanks, >> >> Sam >> (217) 862-9227 (office) >> (602) 327-2134 (cell) >> >> -Original Message- >> From: Linux on 390 Port On Behalf Of Barton >> Sent: Monday, October 21, 2019 2:54 PM >> To: LINUX-390@VM.MARIST.EDU >> Subject: KVM only supports 4guests >> >> I’m hearing at gse that red hat on z only supports 4 guests on kvm on z? >> Here’s a link, am i missIng something? >> https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Faccess.redhat.com%2Farticles%2Frhel-kvm-limits&data=02%7C01%7CSam.Cohen%40LRS.COM%7C48d4b88bb27041ea857c08d75671af04%7C62af9ccc42164ae2a1d306614c59c315%7C0%7C0%7C637072918605890971&sdata=g%2FPSoSxYqh2SgqhLX5V5KrvdkgFPSuWcvqrkupgaKj0%3D&reserved=0 >> >> Barton >> >> >> -- >> For LINUX-390 subscribe / signoff / archive access instructions, send >> email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit >> >> https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww2.marist.edu%2Fhtbin%2Fwlvindex%3FLINUX-390&data=02%7C01%7CSam.Cohen%40LRS.COM%7C48d4b88bb27041ea857c08d75671af04%7C62af9ccc42164ae2a1d306614c59c315%7C0%7C0%7C637072918605890971&sdata=imwx9PkkgF74LtoqU5u9d2mv2nZ0HgHu5OXuUlEwqVo%3D&reserved=0 >> >> -- >> For LINUX-390 subscribe / signoff / archive access instructions, >> send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or >> visit >> http://www2.marist.edu/htbin/wlvindex?LINUX-390 >> > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM only supports 4guests
Sam: The Red Hat site above does not make sense to me as there is only ONE version of RHEL available for IBM Z. That is, Red Hat Enterprise Linux with Unlimited Guests and Red Hat Enterprise Virtualization are NOT available for IBM Z. Jim Elliott Senior Consultant - GlassHouse Systems Inc. On Mon, Oct 21, 2019 at 6:07 PM Cohen, Sam wrote: > Barton, > > It depends on the licensed version of Redhat that you have. From the > footnote: > > This guest limit does not apply to Red Hat Enterprise Linux with Unlimited > Guests. There is no guest limit for Red Hat Enterprise Virtualization, Red > Hat Enterprise Linux OpenStack Platform, and the Red Hat Enterprise Linux > with Smart Virtualization bundle. > > Thanks, > > Sam > (217) 862-9227 (office) > (602) 327-2134 (cell) > > -Original Message- > From: Linux on 390 Port On Behalf Of Barton > Sent: Monday, October 21, 2019 2:54 PM > To: LINUX-390@VM.MARIST.EDU > Subject: KVM only supports 4guests > > I’m hearing at gse that red hat on z only supports 4 guests on kvm on z? > Here’s a link, am i missIng something? > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Faccess.redhat.com%2Farticles%2Frhel-kvm-limits&data=02%7C01%7CSam.Cohen%40LRS.COM%7C48d4b88bb27041ea857c08d75671af04%7C62af9ccc42164ae2a1d306614c59c315%7C0%7C0%7C637072918605890971&sdata=g%2FPSoSxYqh2SgqhLX5V5KrvdkgFPSuWcvqrkupgaKj0%3D&reserved=0 > > Barton > > > -- > For LINUX-390 subscribe / signoff / archive access instructions, send > email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit > > https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww2.marist.edu%2Fhtbin%2Fwlvindex%3FLINUX-390&data=02%7C01%7CSam.Cohen%40LRS.COM%7C48d4b88bb27041ea857c08d75671af04%7C62af9ccc42164ae2a1d306614c59c315%7C0%7C0%7C637072918605890971&sdata=imwx9PkkgF74LtoqU5u9d2mv2nZ0HgHu5OXuUlEwqVo%3D&reserved=0 > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM only supports 4guests
On 10/21/19 5:53 PM, Barton wrote: > I’m hearing at gse that red hat on z only supports 4 guests on kvm on z? > Here’s a link, am i missIng something? > https://access.redhat.com/articles/rhel-kvm-limits Yes. That's a licensing restriction, not a technical/performance one. There's a superscript "1" by that number, and the corresponding footnote says: This guest limit does not apply to Red Hat Enterprise Linux with Unlimited Guests. There is no guest limit for Red Hat Enterprise Virtualization, Red Hat Enterprise Linux OpenStack Platform, and the Red Hat Enterprise Linux with Smart Virtualization bundle. Mark Post -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM only supports 4guests
Barton, It depends on the licensed version of Redhat that you have. From the footnote: This guest limit does not apply to Red Hat Enterprise Linux with Unlimited Guests. There is no guest limit for Red Hat Enterprise Virtualization, Red Hat Enterprise Linux OpenStack Platform, and the Red Hat Enterprise Linux with Smart Virtualization bundle. Thanks, Sam (217) 862-9227 (office) (602) 327-2134 (cell) -Original Message- From: Linux on 390 Port On Behalf Of Barton Sent: Monday, October 21, 2019 2:54 PM To: LINUX-390@VM.MARIST.EDU Subject: KVM only supports 4guests I’m hearing at gse that red hat on z only supports 4 guests on kvm on z? Here’s a link, am i missIng something? https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Faccess.redhat.com%2Farticles%2Frhel-kvm-limits&data=02%7C01%7CSam.Cohen%40LRS.COM%7C48d4b88bb27041ea857c08d75671af04%7C62af9ccc42164ae2a1d306614c59c315%7C0%7C0%7C637072918605890971&sdata=g%2FPSoSxYqh2SgqhLX5V5KrvdkgFPSuWcvqrkupgaKj0%3D&reserved=0 Barton -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww2.marist.edu%2Fhtbin%2Fwlvindex%3FLINUX-390&data=02%7C01%7CSam.Cohen%40LRS.COM%7C48d4b88bb27041ea857c08d75671af04%7C62af9ccc42164ae2a1d306614c59c315%7C0%7C0%7C637072918605890971&sdata=imwx9PkkgF74LtoqU5u9d2mv2nZ0HgHu5OXuUlEwqVo%3D&reserved=0 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
KVM only supports 4guests
I’m hearing at gse that red hat on z only supports 4 guests on kvm on z? Here’s a link, am i missIng something? https://access.redhat.com/articles/rhel-kvm-limits Barton -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Openshift Origin on KVM on LinuxONE
Installing and activating a rngd daemon creates enough entropy to solve the
issue and allow me to start Docker….
Still wondering why on z/VM enough entropy is created to start Docker (without
the activation of the rngd daemon). Same goes for the Ubuntu client where also
no rngd daemon is activated.
And now I’m also wondering whether this would work the samen on a RHEL system…
Will give that a try as well….
Op 27 sep. 2019, om 10:57 heeft Christian Borntraeger
mailto:borntrae...@de.ibm.com>> het volgende geschreven:
On 27.09.19 10:47, Johan Schelling wrote:
I did some additional testing yesterday using gdb and strace….
gbd didn’t return any useful information, but that might also be due to my lack
of gdb experience. Running strace resulted in the following:
...
clock_gettime(CLOCK_MONOTONIC, {207116, 975055264}) = 0
clock_gettime(CLOCK_MONOTONIC, {207116, 975185579}) = 0
mmap(0xc42020, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xc42020
mmap(0xc41ffe8000, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xc41ffe8000
clock_gettime(CLOCK_MONOTONIC, {207116, 975325872}) = 0
clock_gettime(CLOCK_MONOTONIC, {207116, 975713954}) = 0
mmap(0xc42030, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xc42030
mmap(0xc41ffe, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xc41ffe
clock_gettime(CLOCK_MONOTONIC, {207116, 977430825}) = 0
getrandom(
Doesn’t matter whether I use docker 1.13 or docker-ce 18, on the Clefos75
guest the daemon process hangs on the getrandom system call..
When I do the same on an Ubuntu 16.04 guest (where the daemon starts and runs
without any issues) the strace shows the same getrandom call which executes
successfully:
...
futex(0xc420098948, FUTEX_WAKE, 1) = 1
futex(0xc42005e948, FUTEX_WAKE, 1) = 1
futex(0xc420098948, FUTEX_WAKE, 1) = 1
futex(0xc420098948, FUTEX_WAKE, 1) = 1
getrandom("h\"\277\352\376\262(\344", 8, 0) = 8
clock_gettime(CLOCK_REALTIME, {1569355392, 476405161}) = 0
clock_gettime(CLOCK_MONOTONIC, {2337380, 47849415}) = 0
clock_gettime(CLOCK_REALTIME, {1569355392, 477070655}) = 0
clock_gettime(CLOCK_MONOTONIC, {2337380, 48519415}) = 0
clock_gettime(CLOCK_REALTIME, {1569355392, 477339454}) = 0
clock_gettime(CLOCK_MONOTONIC, {2337380, 48781970}) = 0
...
Both the Clefos and Ubuntu guests are running in KVM.
On the Clefos guest I have running in zVM the getrandom call executes
successfully……
Reading up on the issue…. i found this:"When the entropy pool is empty,
reads from /dev/random will block until additional environmental noise is
gathered."
Running “cat /dev/random” on the clefos guest actually freezes…. Doing the
same on the Ubuntu guest does return data as does running the command on the
clefos guest in zVM . So I feel that that’s where there problem is.
Any other insights?
That makes sense. Can you maybe add a virtio-rng device to those guests
and install an rngd daemon in the guest that feeds the entropy from
/dev/hwrng back into the kernel entropy?
PS: some kernel versions had bugs where they did not get enough entropy from
disk and network activity. Maybe thats something to look at for Neale.
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IBM z15 KVM Support
For a first look at what our fine new hardware has in store for KVM, check out http://kvmonz.blogspot.com/2019/10/kvm-on-ibm-z15-features.html - more to come! Also, we *did* ramp up our effort with the Linux on Z blog significantly. So check out https://linux-on-z.blogspot.com/, and specifically our new subsection on containers at https://linux-on-z.blogspot.com/p/containers-on-ibm-z.html -- Mit freundlichen Grüßen / Kind regards Stefan Raspl Linux on Z & Virtualization Development --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzender des Aufsichtsrats: Matthias Hartmann Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Openshift Origin on KVM on LinuxONE
On 27.09.19 10:47, Johan Schelling wrote:
> I did some additional testing yesterday using gdb and strace….
>
> gbd didn’t return any useful information, but that might also be due to my
> lack of gdb experience. Running strace resulted in the following:
>
> ...
> clock_gettime(CLOCK_MONOTONIC, {207116, 975055264}) = 0
> clock_gettime(CLOCK_MONOTONIC, {207116, 975185579}) = 0
> mmap(0xc42020, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
> -1, 0) = 0xc42020
> mmap(0xc41ffe8000, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
> -1, 0) = 0xc41ffe8000
> clock_gettime(CLOCK_MONOTONIC, {207116, 975325872}) = 0
> clock_gettime(CLOCK_MONOTONIC, {207116, 975713954}) = 0
> mmap(0xc42030, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
> -1, 0) = 0xc42030
> mmap(0xc41ffe, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
> -1, 0) = 0xc41ffe
> clock_gettime(CLOCK_MONOTONIC, {207116, 977430825}) = 0
> getrandom(
>
> Doesn’t matter whether I use docker 1.13 or docker-ce 18, on the Clefos75
> guest the daemon process hangs on the getrandom system call..
>
> When I do the same on an Ubuntu 16.04 guest (where the daemon starts and runs
> without any issues) the strace shows the same getrandom call which executes
> successfully:
>
> ...
> futex(0xc420098948, FUTEX_WAKE, 1) = 1
> futex(0xc42005e948, FUTEX_WAKE, 1) = 1
> futex(0xc420098948, FUTEX_WAKE, 1) = 1
> futex(0xc420098948, FUTEX_WAKE, 1) = 1
> getrandom("h\"\277\352\376\262(\344", 8, 0) = 8
> clock_gettime(CLOCK_REALTIME, {1569355392, 476405161}) = 0
> clock_gettime(CLOCK_MONOTONIC, {2337380, 47849415}) = 0
> clock_gettime(CLOCK_REALTIME, {1569355392, 477070655}) = 0
> clock_gettime(CLOCK_MONOTONIC, {2337380, 48519415}) = 0
> clock_gettime(CLOCK_REALTIME, {1569355392, 477339454}) = 0
> clock_gettime(CLOCK_MONOTONIC, {2337380, 48781970}) = 0
> ...
>
> Both the Clefos and Ubuntu guests are running in KVM.
> On the Clefos guest I have running in zVM the getrandom call executes
> successfully……
>
> Reading up on the issue…. i found this:"When the entropy pool is empty,
> reads from /dev/random will block until additional environmental noise is
> gathered."
> Running “cat /dev/random” on the clefos guest actually freezes…. Doing
> the same on the Ubuntu guest does return data as does running the command on
> the clefos guest in zVM . So I feel that that’s where there problem is.
> Any other insights?
That makes sense. Can you maybe add a virtio-rng device to those guests
and install an rngd daemon in the guest that feeds the entropy from
/dev/hwrng back into the kernel entropy?
PS: some kernel versions had bugs where they did not get enough entropy from
disk and network activity. Maybe thats something to look at for Neale.
--
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Re: Openshift Origin on KVM on LinuxONE
The source for random numbers is the rngd daemon. I think it needs to be
started. Is rng-tools RPM installed?
Neale Ferguson
SNA - 20 Years of Customer Success
On 9/27/19, 04:48, "Linux on 390 Port on behalf of Johan Schelling"
wrote:
I did some additional testing yesterday using gdb and strace….
gbd didn’t return any useful information, but that might also be due to my
lack of gdb experience. Running strace resulted in the following:
...
clock_gettime(CLOCK_MONOTONIC, {207116, 975055264}) = 0
clock_gettime(CLOCK_MONOTONIC, {207116, 975185579}) = 0
mmap(0xc42020, 1048576, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xc42020
mmap(0xc41ffe8000, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xc41ffe8000
clock_gettime(CLOCK_MONOTONIC, {207116, 975325872}) = 0
clock_gettime(CLOCK_MONOTONIC, {207116, 975713954}) = 0
mmap(0xc42030, 1048576, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xc42030
mmap(0xc41ffe, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xc41ffe
clock_gettime(CLOCK_MONOTONIC, {207116, 977430825}) = 0
getrandom(
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Re: Openshift Origin on KVM on LinuxONE
I did some additional testing yesterday using gdb and strace….
gbd didn’t return any useful information, but that might also be due to my lack
of gdb experience. Running strace resulted in the following:
...
clock_gettime(CLOCK_MONOTONIC, {207116, 975055264}) = 0
clock_gettime(CLOCK_MONOTONIC, {207116, 975185579}) = 0
mmap(0xc42020, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xc42020
mmap(0xc41ffe8000, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xc41ffe8000
clock_gettime(CLOCK_MONOTONIC, {207116, 975325872}) = 0
clock_gettime(CLOCK_MONOTONIC, {207116, 975713954}) = 0
mmap(0xc42030, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xc42030
mmap(0xc41ffe, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xc41ffe
clock_gettime(CLOCK_MONOTONIC, {207116, 977430825}) = 0
getrandom(
Doesn’t matter whether I use docker 1.13 or docker-ce 18, on the Clefos75
guest the daemon process hangs on the getrandom system call..
When I do the same on an Ubuntu 16.04 guest (where the daemon starts and runs
without any issues) the strace shows the same getrandom call which executes
successfully:
...
futex(0xc420098948, FUTEX_WAKE, 1) = 1
futex(0xc42005e948, FUTEX_WAKE, 1) = 1
futex(0xc420098948, FUTEX_WAKE, 1) = 1
futex(0xc420098948, FUTEX_WAKE, 1) = 1
getrandom("h\"\277\352\376\262(\344", 8, 0) = 8
clock_gettime(CLOCK_REALTIME, {1569355392, 476405161}) = 0
clock_gettime(CLOCK_MONOTONIC, {2337380, 47849415}) = 0
clock_gettime(CLOCK_REALTIME, {1569355392, 477070655}) = 0
clock_gettime(CLOCK_MONOTONIC, {2337380, 48519415}) = 0
clock_gettime(CLOCK_REALTIME, {1569355392, 477339454}) = 0
clock_gettime(CLOCK_MONOTONIC, {2337380, 48781970}) = 0
...
Both the Clefos and Ubuntu guests are running in KVM.
On the Clefos guest I have running in zVM the getrandom call executes
successfully……
Reading up on the issue…. i found this:"When the entropy pool is empty,
reads from /dev/random will block until additional environmental noise is
gathered."
Running “cat /dev/random” on the clefos guest actually freezes…. Doing the
same on the Ubuntu guest does return data as does running the command on the
clefos guest in zVM . So I feel that that’s where there problem is.
Any other insights?
Regards
Johan
Op 24 sep. 2019, om 20:25 heeft Johan Schelling
mailto:johan.schell...@icu-it.nl>> het volgende
geschreven:
Hi Christian,
I’m running Ubuntu 16.04 in LPAR as the KVM host.
No problems running Docker in an Ubuntu 16.04 guest. The docker daemon will
not start in a Clefos75 guest.
When using a similar Clefos75 guest on zVM 6.4 the docker daemon has no
problem starting up.
I’ll get some trace and debug info tomorrow..
Johan
Op 24 sep. 2019, om 11:26 heeft Christian Borntraeger
mailto:borntrae...@linux.ibm.com>> het volgende
geschreven:
On 24.09.19 11:13, Johan Schelling wrote:
Goodmorning all,
I have been playing around for a while now with Openshift Origin on our
LinuxONE system following the great “Getting_Started_with_OpenShift_v3.10”
guide….
When using zVM as a hypervisor I can deploy an Openshift cluster with multiple
nodes with no problems at all (using zVM 6.4 and Clefos 7.5). Everything works
like a charm….
But when I try to deploy an Openshift cluster with one or multiple nodes using
KVM (using Ubuntu 16.04 KVM and Clefos 7.5) I run into problems starting the
docker daemon.
Somehow the docker daemon freezes after which I have to cancel the ansible
playbook…… Starting the docker daemon by hand (systemctl start docker), the
same thing happens:
Can you say exactly what distro version run as host and what distro version
runs as guest (the good and the bad variants)
This was not 100% clear.
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor
preset: disabled)
Active: activating (start) since di 2019-09-24 11:00:01 CEST; 8min ago
Docs: http://docs.docker.com
Main PID: 27563 (dockerd-current)
CGroup: /system.slice/docker.service
└─27563 /usr/bin/dockerd-current --add-runtime
docker-runc=/usr/libexec/docker/docker-runc-current
--default-runtime=docker-runc --exec-...
sep 24 11:00:01 lnxicu20 systemd[1]: Starting Docker Application Container
Engine...
any chance to attach gdb to that hanging process and doing a "thread apply all
bt"?
The service will remain in status “activating (start)” until I kill the
service. No messages (other than “starting Docker Application Container
Engine”) the logs. Every docker command that you try to give (e.g. docker
version
Anyone seen this behaviour before or any ideas on what is going wrong?
I have a couple of other linux guests (both Ubuntu and SLES) running Docker in
both zVM and KVM environment without any problems….
So that means that you have other guests unde
Re: Openshift Origin on KVM on LinuxONE
Hi Christian, I’m running Ubuntu 16.04 in LPAR as the KVM host. No problems running Docker in an Ubuntu 16.04 guest. The docker daemon will not start in a Clefos75 guest. When using a similar Clefos75 guest on zVM 6.4 the docker daemon has no problem starting up. I’ll get some trace and debug info tomorrow.. Johan > Op 24 sep. 2019, om 11:26 heeft Christian Borntraeger > het volgende geschreven: > > On 24.09.19 11:13, Johan Schelling wrote: >> Goodmorning all, >> >> I have been playing around for a while now with Openshift Origin on our >> LinuxONE system following the great “Getting_Started_with_OpenShift_v3.10” >> guide…. >> When using zVM as a hypervisor I can deploy an Openshift cluster with >> multiple nodes with no problems at all (using zVM 6.4 and Clefos 7.5). >> Everything works like a charm…. >> >> But when I try to deploy an Openshift cluster with one or multiple nodes >> using KVM (using Ubuntu 16.04 KVM and Clefos 7.5) I run into problems >> starting the docker daemon. >> Somehow the docker daemon freezes after which I have to cancel the ansible >> playbook…… Starting the docker daemon by hand (systemctl start docker), >> the same thing happens: > > > Can you say exactly what distro version run as host and what distro version > runs as guest (the good and the bad variants) > This was not 100% clear. > >> >> ● docker.service - Docker Application Container Engine >> Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor >> preset: disabled) >> Active: activating (start) since di 2019-09-24 11:00:01 CEST; 8min ago >> Docs: http://docs.docker.com >> Main PID: 27563 (dockerd-current) >> CGroup: /system.slice/docker.service >> └─27563 /usr/bin/dockerd-current --add-runtime >> docker-runc=/usr/libexec/docker/docker-runc-current >> --default-runtime=docker-runc --exec-... >> >> sep 24 11:00:01 lnxicu20 systemd[1]: Starting Docker Application Container >> Engine... > > any chance to attach gdb to that hanging process and doing a "thread apply > all bt"? >> The service will remain in status “activating (start)” until I kill the >> service. No messages (other than “starting Docker Application Container >> Engine”) the logs. Every docker command that you try to give (e.g. docker >> version >> >> Anyone seen this behaviour before or any ideas on what is going wrong? >> >> I have a couple of other linux guests (both Ubuntu and SLES) running Docker >> in both zVM and KVM environment without any problems…. > > So that means that you have other guests under KVM where docker starts up > just fine. > >> >> Some additional information: yum list installed | grep docker >> >> cockpit-docker.s390x176-4.el7.centos @extras >> docker.s390x2:1.13.1-96.gitb2f74b2.el7.centos >> docker-client.s390x 2:1.13.1-96.gitb2f74b2.el7.centos >> docker-common.s390x 2:1.13.1-96.gitb2f74b2.el7.centos >> origin-docker-excluder.noarch 3.11.0-1.el7.git.0.62803d0 >> @centos-openshift-origin >> python-docker-py.noarch 1:1.10.6-9.el7_6 @extras >> python-docker-pycreds.noarch1:0.3.0-9.el7_6@extras > > Or asked differently, is it just the clefos guest that does not work? >> >> Same situation on linux guests running in zVM and KVM, but only on zVM the >> docker service will start. >> >> On the zVM guest the “docker version” command returns: >> >> Client: >> Version: 1.13.1 >> API version: 1.26 >> Package version: docker-1.13.1-96.gitb2f74b2.el7.centos.s390x >> Go version: go1.10.3 >> Git commit: b2f74b2/1.13.1 >> Built: Thu Jun 20 12:57:27 2019 >> OS/Arch: linux/s390x >> >> Server: >> Version: 1.13.1 >> API version: 1.26 (minimum version 1.12) >> Package version: docker-1.13.1-96.gitb2f74b2.el7.centos.s390x >> Go version: go1.10.3 >> Git commit: b2f74b2/1.13.1 >> Built: Thu Jun 20 12:57:27 2019 >> OS/Arch: linux/s390x >> Experimental:false >> >> Running the same “docker version” on the guest in the KVM environment >> results in a freeze ….. >> >> On an Ubuntu guest running in KVM an “apt list —installed | grep docker” >> returns: >> >> docker/xenial,now 1.5-1 s390x [installed] >> docker.io/xenial-updates,xenial-security,now 18.09.7-0ubuntu1~16.04.5 s390x >> [installed] >> >>
Re: Openshift Origin on KVM on LinuxONE
I did a clean install of Clefos and then installed docker-ce but with the same result…. starting dockerd resulted in the same ‘freeze’….. I’ll try to get some trace info tomorrow…. Johan > Op 24 sep. 2019, om 15:26 heeft Neale Ferguson het > volgende geschreven: > > docker-ce 18.06.3 is available in the ClefOS EPEL if you wish to try it. I > have also built 18.09 but it's build mechanism is separate from the ClefOS > builder. > > Strace may be useful in helping diagnose as would gdb if you can attach to > the hanging process. > > Neale Ferguson > SNA - 20 Years of Customer Success > > On 9/24/19, 05:13, "Linux on 390 Port on behalf of Johan Schelling" > wrote: > >Goodmorning all, > >I have been playing around for a while now with Openshift Origin on our > LinuxONE system following the great “Getting_Started_with_OpenShift_v3.10” > guide…. >When using zVM as a hypervisor I can deploy an Openshift cluster with > multiple nodes with no problems at all (using zVM 6.4 and Clefos 7.5). > Everything works like a charm…. > >But when I try to deploy an Openshift cluster with one or multiple nodes > using KVM (using Ubuntu 16.04 KVM and Clefos 7.5) I run into problems > starting the docker daemon. >Somehow the docker daemon freezes after which I have to cancel the ansible > playbook…… Starting the docker daemon by hand (systemctl start docker), > the same thing happens: > >● docker.service - Docker Application Container Engine > Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor > preset: disabled) > Active: activating (start) since di 2019-09-24 11:00:01 CEST; 8min ago > Docs: http://docs.docker.com > Main PID: 27563 (dockerd-current) > CGroup: /system.slice/docker.service > └─27563 /usr/bin/dockerd-current --add-runtime > docker-runc=/usr/libexec/docker/docker-runc-current > --default-runtime=docker-runc --exec-... > > > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Openshift Origin on KVM on LinuxONE
docker-ce 18.06.3 is available in the ClefOS EPEL if you wish to try it. I have also built 18.09 but it's build mechanism is separate from the ClefOS builder. Strace may be useful in helping diagnose as would gdb if you can attach to the hanging process. Neale Ferguson SNA - 20 Years of Customer Success On 9/24/19, 05:13, "Linux on 390 Port on behalf of Johan Schelling" wrote: Goodmorning all, I have been playing around for a while now with Openshift Origin on our LinuxONE system following the great “Getting_Started_with_OpenShift_v3.10” guide…. When using zVM as a hypervisor I can deploy an Openshift cluster with multiple nodes with no problems at all (using zVM 6.4 and Clefos 7.5). Everything works like a charm…. But when I try to deploy an Openshift cluster with one or multiple nodes using KVM (using Ubuntu 16.04 KVM and Clefos 7.5) I run into problems starting the docker daemon. Somehow the docker daemon freezes after which I have to cancel the ansible playbook…… Starting the docker daemon by hand (systemctl start docker), the same thing happens: ● docker.service - Docker Application Container Engine Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled) Active: activating (start) since di 2019-09-24 11:00:01 CEST; 8min ago Docs: http://docs.docker.com Main PID: 27563 (dockerd-current) CGroup: /system.slice/docker.service └─27563 /usr/bin/dockerd-current --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current --default-runtime=docker-runc --exec-... -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Openshift Origin on KVM on LinuxONE
On 24.09.19 11:13, Johan Schelling wrote: > Goodmorning all, > > I have been playing around for a while now with Openshift Origin on our > LinuxONE system following the great “Getting_Started_with_OpenShift_v3.10” > guide…. > When using zVM as a hypervisor I can deploy an Openshift cluster with > multiple nodes with no problems at all (using zVM 6.4 and Clefos 7.5). > Everything works like a charm…. > > But when I try to deploy an Openshift cluster with one or multiple nodes > using KVM (using Ubuntu 16.04 KVM and Clefos 7.5) I run into problems > starting the docker daemon. > Somehow the docker daemon freezes after which I have to cancel the ansible > playbook…… Starting the docker daemon by hand (systemctl start docker), > the same thing happens: Can you say exactly what distro version run as host and what distro version runs as guest (the good and the bad variants) This was not 100% clear. > > ● docker.service - Docker Application Container Engine >Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor > preset: disabled) >Active: activating (start) since di 2019-09-24 11:00:01 CEST; 8min ago > Docs: http://docs.docker.com > Main PID: 27563 (dockerd-current) >CGroup: /system.slice/docker.service >└─27563 /usr/bin/dockerd-current --add-runtime > docker-runc=/usr/libexec/docker/docker-runc-current > --default-runtime=docker-runc --exec-... > > sep 24 11:00:01 lnxicu20 systemd[1]: Starting Docker Application Container > Engine... any chance to attach gdb to that hanging process and doing a "thread apply all bt"? > The service will remain in status “activating (start)” until I kill the > service. No messages (other than “starting Docker Application Container > Engine”) the logs. Every docker command that you try to give (e.g. docker > version > > Anyone seen this behaviour before or any ideas on what is going wrong? > > I have a couple of other linux guests (both Ubuntu and SLES) running Docker > in both zVM and KVM environment without any problems…. So that means that you have other guests under KVM where docker starts up just fine. > > Some additional information: yum list installed | grep docker > > cockpit-docker.s390x176-4.el7.centos @extras > docker.s390x2:1.13.1-96.gitb2f74b2.el7.centos > docker-client.s390x 2:1.13.1-96.gitb2f74b2.el7.centos > docker-common.s390x 2:1.13.1-96.gitb2f74b2.el7.centos > origin-docker-excluder.noarch 3.11.0-1.el7.git.0.62803d0 > @centos-openshift-origin > python-docker-py.noarch 1:1.10.6-9.el7_6 @extras > python-docker-pycreds.noarch1:0.3.0-9.el7_6@extras Or asked differently, is it just the clefos guest that does not work? > > Same situation on linux guests running in zVM and KVM, but only on zVM the > docker service will start. > > On the zVM guest the “docker version” command returns: > > Client: > Version: 1.13.1 > API version: 1.26 > Package version: docker-1.13.1-96.gitb2f74b2.el7.centos.s390x > Go version: go1.10.3 > Git commit: b2f74b2/1.13.1 > Built: Thu Jun 20 12:57:27 2019 > OS/Arch: linux/s390x > > Server: > Version: 1.13.1 > API version: 1.26 (minimum version 1.12) > Package version: docker-1.13.1-96.gitb2f74b2.el7.centos.s390x > Go version: go1.10.3 > Git commit: b2f74b2/1.13.1 > Built: Thu Jun 20 12:57:27 2019 > OS/Arch: linux/s390x > Experimental:false > > Running the same “docker version” on the guest in the KVM environment > results in a freeze ….. > > On an Ubuntu guest running in KVM an “apt list —installed | grep docker” > returns: > > docker/xenial,now 1.5-1 s390x [installed] > docker.io/xenial-updates,xenial-security,now 18.09.7-0ubuntu1~16.04.5 s390x > [installed] > > and the “docker version” command shows: > > Client: > Version: 18.09.7 > API version: 1.39 > Go version:go1.10.4 > Git commit:2d0083d > Built: Fri Aug 16 14:19:34 2019 > OS/Arch: linux/s390x > Experimental: false > > Server: > Engine: > Version: 18.09.7 > API version: 1.39 (minimum version 1.12) > Go version: go1.10.4 > Git commit: 2d0083d > Built:Thu Aug 15 15:12:41 2019 > OS/Arch: linux/s390x > Experimental: false > > The Ubuntu environment on KVM has been running perfectly OK for quite some > time now ….. > > Sorry for the long post, but this is driving me nuts….. > > Regards > Johan Schelling > Infr
Openshift Origin on KVM on LinuxONE
Goodmorning all, I have been playing around for a while now with Openshift Origin on our LinuxONE system following the great “Getting_Started_with_OpenShift_v3.10” guide…. When using zVM as a hypervisor I can deploy an Openshift cluster with multiple nodes with no problems at all (using zVM 6.4 and Clefos 7.5). Everything works like a charm…. But when I try to deploy an Openshift cluster with one or multiple nodes using KVM (using Ubuntu 16.04 KVM and Clefos 7.5) I run into problems starting the docker daemon. Somehow the docker daemon freezes after which I have to cancel the ansible playbook…… Starting the docker daemon by hand (systemctl start docker), the same thing happens: ● docker.service - Docker Application Container Engine Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled) Active: activating (start) since di 2019-09-24 11:00:01 CEST; 8min ago Docs: http://docs.docker.com Main PID: 27563 (dockerd-current) CGroup: /system.slice/docker.service └─27563 /usr/bin/dockerd-current --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current --default-runtime=docker-runc --exec-... sep 24 11:00:01 lnxicu20 systemd[1]: Starting Docker Application Container Engine... The service will remain in status “activating (start)” until I kill the service. No messages (other than “starting Docker Application Container Engine”) the logs. Every docker command that you try to give (e.g. docker version Anyone seen this behaviour before or any ideas on what is going wrong? I have a couple of other linux guests (both Ubuntu and SLES) running Docker in both zVM and KVM environment without any problems…. Some additional information: yum list installed | grep docker cockpit-docker.s390x176-4.el7.centos @extras docker.s390x2:1.13.1-96.gitb2f74b2.el7.centos docker-client.s390x 2:1.13.1-96.gitb2f74b2.el7.centos docker-common.s390x 2:1.13.1-96.gitb2f74b2.el7.centos origin-docker-excluder.noarch 3.11.0-1.el7.git.0.62803d0 @centos-openshift-origin python-docker-py.noarch 1:1.10.6-9.el7_6 @extras python-docker-pycreds.noarch1:0.3.0-9.el7_6@extras Same situation on linux guests running in zVM and KVM, but only on zVM the docker service will start. On the zVM guest the “docker version” command returns: Client: Version: 1.13.1 API version: 1.26 Package version: docker-1.13.1-96.gitb2f74b2.el7.centos.s390x Go version: go1.10.3 Git commit: b2f74b2/1.13.1 Built: Thu Jun 20 12:57:27 2019 OS/Arch: linux/s390x Server: Version: 1.13.1 API version: 1.26 (minimum version 1.12) Package version: docker-1.13.1-96.gitb2f74b2.el7.centos.s390x Go version: go1.10.3 Git commit: b2f74b2/1.13.1 Built: Thu Jun 20 12:57:27 2019 OS/Arch: linux/s390x Experimental:false Running the same “docker version” on the guest in the KVM environment results in a freeze ….. On an Ubuntu guest running in KVM an “apt list —installed | grep docker” returns: docker/xenial,now 1.5-1 s390x [installed] docker.io/xenial-updates,xenial-security,now 18.09.7-0ubuntu1~16.04.5 s390x [installed] and the “docker version” command shows: Client: Version: 18.09.7 API version: 1.39 Go version:go1.10.4 Git commit:2d0083d Built: Fri Aug 16 14:19:34 2019 OS/Arch: linux/s390x Experimental: false Server: Engine: Version: 18.09.7 API version: 1.39 (minimum version 1.12) Go version: go1.10.4 Git commit: 2d0083d Built:Thu Aug 15 15:12:41 2019 OS/Arch: linux/s390x Experimental: false The Ubuntu environment on KVM has been running perfectly OK for quite some time now ….. Sorry for the long post, but this is driving me nuts….. Regards Johan Schelling Infrastructure Solution Architect [cid:image001.png@01D008CB.2EEA8890] ICU IT Services BV Transistorstraat 55b I 1322 CK ALMERE M 06 – 21 245 992 I E johan.schell...@icu-it.nl<mailto:johan.schell...@icu-it.nl> T 088 – 5 234 123 I www.icu-it.nl<http://www.icu-it.nl/> I KvK 32135776 ICU Proclaimer<http://www.icu-it.nl/proclaimer/> -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM and FCP disk without SAN switch
aahhh yea. a dark corner of memory gets its first ray of light in a while V7000 and other storwize related products ( SVC, FS9xxx ) now do NPIV on the storage side by default if you are doing a new install. You have to explicitly enable it if you are upgrading from older versions. Ostensibly this feature is there to enable easier storage migrations down the line, since the WWPN you're configuring into the SAN zone and on the operating system side is now virtual. It is supposed to make switching the physical storage box out from under the running OS by using box managed copy services like metro-mirror easier and more automate-able without having to take a planned outage. This obviously also requires a SAN switch for it to work since it uses NPIV. -- Jay Brenneman -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM and FCP disk without SAN switch
On 17.09.19 17:18, Johan Schelling wrote: > I remember that when we started with KVM on LinuxONE around 3/4 years ago we > connected our V7000 directly (without a SAN switch) to the LinuxONE. zVM > worked like a charm, but we had a lot of problems with (the then IBM > supplied) KVM….. We had a lot of discussion with both the LinuxONE and the > storage guys as the documentation wasn’t quite clear on what was supported or > not. Problems we faced had to do with (hope I recall correctly) with WWPN’s > returned from the V7000 were all mixed up… At the moment we added a SAN > switch all our problems were gone … ;-) > Haven’t had any problems with KVM since ….. but haven’t checked the > situation without a SAN switch in the last years. Yes, there was a firmware issue with the V7000s back then. But this has been fixed. I still have a v7000 directly connected to my test z13 as an outcome of that bug back then. But as I said, unless this is officially supported by all components you should better use a switch. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM and FCP disk without SAN switch
I remember that when we started with KVM on LinuxONE around 3/4 years ago we connected our V7000 directly (without a SAN switch) to the LinuxONE. zVM worked like a charm, but we had a lot of problems with (the then IBM supplied) KVM….. We had a lot of discussion with both the LinuxONE and the storage guys as the documentation wasn’t quite clear on what was supported or not. Problems we faced had to do with (hope I recall correctly) with WWPN’s returned from the V7000 were all mixed up… At the moment we added a SAN switch all our problems were gone … ;-) Haven’t had any problems with KVM since ….. but haven’t checked the situation without a SAN switch in the last years. Regards Johan Schelling Infrastructure Solution Architect [cid:image001.png@01D008CB.2EEA8890] ICU IT Services BV Transistorstraat 55b I 1322 CK ALMERE M 06 – 21 245 992 I E johan.schell...@icu-it.nl<mailto:johan.schell...@icu-it.nl> T 088 – 5 234 123 I www.icu-it.nl<http://www.icu-it.nl/> I KvK 32135776 ICU Proclaimer<http://www.icu-it.nl/proclaimer/> Op 17 sep. 2019, om 12:56 heeft Christian Borntraeger mailto:borntrae...@linux.ibm.com>> het volgende geschreven: On 16.09.19 21:19, Jim Elliott wrote: For z/VM you must have a SAN switch to connect FCP attached disk. Is this also true for KVM (Ubuntu if it matters)? As KVM borrows the FCP support from Linux the answer is the same as for Linux in LPAR. In general the Linux code supports switched fabric and direct attachment. The code does not support arbitrated loop. What you also need is a support statement that tells about the storage server and the Z system. For example a V7000 DOES work when connected to a z Box (there is no fencing) but it is not a supported config (at least it was not when I check 3 years ago). So in general you are on the safe-side with a switch. Without a switch requires to check the certifications. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu<mailto:lists...@vm.marist.edu> with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM and FCP disk without SAN switch
Also be aware that if you want to use NPIV you /must/ have a switch and the switch must explicitly support NPIV since that is a function that requires both FCP Host adapter and switch support to work. On Tue, Sep 17, 2019 at 7:35 AM Jim Elliott wrote: > Christian: > > Thanks. We will go with a switch to attach the V5010 and decided on an > IBM/Cisco SAN32C-6 with 8-port 16 Gb bundle. > > Jim Elliott > Senior Consultant - GlassHouse Systems Inc. > > > On Tue, Sep 17, 2019 at 6:58 AM Christian Borntraeger < > borntrae...@linux.ibm.com> wrote: > > > On 16.09.19 21:19, Jim Elliott wrote: > > > For z/VM you must have a SAN switch to connect FCP attached disk. Is > this > > > also true for KVM (Ubuntu if it matters)? > > > > As KVM borrows the FCP support from Linux the answer is the same as for > > Linux in LPAR. > > In general the Linux code supports switched fabric and direct attachment. > > The code does > > not support arbitrated loop. > > What you also need is a support statement that tells about the storage > > server and the > > Z system. For example a V7000 DOES work when connected to a z Box (there > > is no fencing) > > but it is not a supported config (at least it was not when I check 3 > years > > ago). > > So in general you are on the safe-side with a switch. Without a switch > > requires to check > > the certifications. > > > > -- > > For LINUX-390 subscribe / signoff / archive access instructions, > > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > > visit > > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > > > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > -- Jay Brenneman -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM and FCP disk without SAN switch
Christian: Thanks. We will go with a switch to attach the V5010 and decided on an IBM/Cisco SAN32C-6 with 8-port 16 Gb bundle. Jim Elliott Senior Consultant - GlassHouse Systems Inc. On Tue, Sep 17, 2019 at 6:58 AM Christian Borntraeger < borntrae...@linux.ibm.com> wrote: > On 16.09.19 21:19, Jim Elliott wrote: > > For z/VM you must have a SAN switch to connect FCP attached disk. Is this > > also true for KVM (Ubuntu if it matters)? > > As KVM borrows the FCP support from Linux the answer is the same as for > Linux in LPAR. > In general the Linux code supports switched fabric and direct attachment. > The code does > not support arbitrated loop. > What you also need is a support statement that tells about the storage > server and the > Z system. For example a V7000 DOES work when connected to a z Box (there > is no fencing) > but it is not a supported config (at least it was not when I check 3 years > ago). > So in general you are on the safe-side with a switch. Without a switch > requires to check > the certifications. > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM and FCP disk without SAN switch
On 16.09.19 21:19, Jim Elliott wrote: > For z/VM you must have a SAN switch to connect FCP attached disk. Is this > also true for KVM (Ubuntu if it matters)? As KVM borrows the FCP support from Linux the answer is the same as for Linux in LPAR. In general the Linux code supports switched fabric and direct attachment. The code does not support arbitrated loop. What you also need is a support statement that tells about the storage server and the Z system. For example a V7000 DOES work when connected to a z Box (there is no fencing) but it is not a supported config (at least it was not when I check 3 years ago). So in general you are on the safe-side with a switch. Without a switch requires to check the certifications. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM and FCP disk without SAN switch
Carlos is right. It really doesn't matter what system is on the Z (VM or Linux), it has more to do with the FCP FICON adapters. The v boxes don't have the protocol to talk to FCP directly, while the more sophistcated DS8xxx do. So, no matter what system you are talking to on Z, you would need a switch for the v5010. Martha On 9/16/2019 4:44 PM, Jim Elliott wrote: Carlos: Thanks. It will be a V5010 so we will configure a small SAN switch. Jim Elliott Senior Consultant - GlassHouse Systems Inc. On Mon, Sep 16, 2019 at 4:39 PM Bodra - Pessoal wrote: From our experience with KVM running on a zBox if you use as storage devices IBM V5000 or V7000 you need to use a San Switch (2498-Bxx) to connect. If you use storage devices IBM DS8800/8870, you can connect directly. These are some tests that we did here at our shop. Carlos Bodra IBM zEnterprise Certified São Paulo – SP – Brazil -Mensagem original- De: Linux on 390 Port Em nome de Jim Elliott Enviada em: segunda-feira, 16 de setembro de 2019 16:20 Para: LINUX-390@VM.MARIST.EDU Assunto: KVM and FCP disk without SAN switch For z/VM you must have a SAN switch to connect FCP attached disk. Is this also true for KVM (Ubuntu if it matters)? Jim Elliott Senior Consultant - GlassHouse Systems Inc. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- Martha McConaghy Marist: System Architect/Technical Lead SHARE Association: Vice President Marist College IT Poughkeepsie, NY 12601 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM and FCP disk without SAN switch
Carlos: Thanks. It will be a V5010 so we will configure a small SAN switch. Jim Elliott Senior Consultant - GlassHouse Systems Inc. On Mon, Sep 16, 2019 at 4:39 PM Bodra - Pessoal wrote: > From our experience with KVM running on a zBox if you use as storage > devices IBM V5000 or V7000 you need to use a San Switch (2498-Bxx) to > connect. If you use storage devices IBM DS8800/8870, you can connect > directly. These are some tests that we did here at our shop. > > > Carlos Bodra > IBM zEnterprise Certified > São Paulo – SP – Brazil > > > -Mensagem original- > De: Linux on 390 Port Em nome de Jim Elliott > Enviada em: segunda-feira, 16 de setembro de 2019 16:20 > Para: LINUX-390@VM.MARIST.EDU > Assunto: KVM and FCP disk without SAN switch > > For z/VM you must have a SAN switch to connect FCP attached disk. Is this > also true for KVM (Ubuntu if it matters)? > > Jim Elliott > Senior Consultant - GlassHouse Systems Inc. > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
RES: KVM and FCP disk without SAN switch
>From our experience with KVM running on a zBox if you use as storage devices >IBM V5000 or V7000 you need to use a San Switch (2498-Bxx) to connect. If you >use storage devices IBM DS8800/8870, you can connect directly. These are some >tests that we did here at our shop. Carlos Bodra IBM zEnterprise Certified São Paulo – SP – Brazil -Mensagem original- De: Linux on 390 Port Em nome de Jim Elliott Enviada em: segunda-feira, 16 de setembro de 2019 16:20 Para: LINUX-390@VM.MARIST.EDU Assunto: KVM and FCP disk without SAN switch For z/VM you must have a SAN switch to connect FCP attached disk. Is this also true for KVM (Ubuntu if it matters)? Jim Elliott Senior Consultant - GlassHouse Systems Inc. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM and FCP disk without SAN switch
Yes, it is. With KVM you have more switch options than with z/VM Adolph Kahan | Senior Consultant Tel: +1 (416) 229-2950 x304 | Mobile: +1 (416) 822-3329 -Original Message- From: Linux on 390 Port On Behalf Of Jim Elliott Sent: Monday, September 16, 2019 3:20 PM To: LINUX-390@VM.MARIST.EDU Subject: KVM and FCP disk without SAN switch For z/VM you must have a SAN switch to connect FCP attached disk. Is this also true for KVM (Ubuntu if it matters)? Jim Elliott Senior Consultant - GlassHouse Systems Inc. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit https://can01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww2.marist.edu%2Fhtbin%2Fwlvindex%3FLINUX-390&data=01%7C01%7Cakahan%40GHSYSTEMS.COM%7C3c38157fe09f4553da0d08d73adb28c2%7C1c932bc9c5af4366811d012126996da4%7C0&sdata=DwHDjMM7P9M4Rbc0M4TBx%2BYYHt9KlLhRfp9ncaYFMmM%3D&reserved=0 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
KVM and FCP disk without SAN switch
For z/VM you must have a SAN switch to connect FCP attached disk. Is this also true for KVM (Ubuntu if it matters)? Jim Elliott Senior Consultant - GlassHouse Systems Inc. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Migration from z/VM to KVM
Velocity Software offers to universities at no charge our complete zPRO, allowing the universities to run their z/VM system without any knowledge of z/VM. It is a complete web based interface that creates an on-prem cloud, We will install it and support it. Takes 1/2 day to get it all build. (No smapi, no java, no complexity). The university will have complete control of their resource and never have to look at a directory, dirmaint, or a 3270. And they get a platform that scales (z/VM). Isn't that a better alternative? Anyone that wants to check out our on-prem cloud can go to "zPRO.VelocitySoftware.com". You can sign up to use our onprem cloud and create linux servers, cms users, even 2nd level VM systems. Userid is "demozpro". password is "demodemo". And yes, we have racf and feel secure in your trying to hack our system. Anyone who has tried xcat, cma or others and failed (like us, and several customers), this actually works, is installable, and usable Show your management! On 8/28/2019 8:28 AM, Jim Elliott wrote: I have a customer considering a migration from z/VM to KVM (ClefOS) on their LinuxONE machines. They are a university with no Z skills (we provide those) so they are looking at simplifying their environment as they grow. Is there documentation / tips anywhere on how to do such a migration? Jim Elliott Senior Consultant - GlassHouse Systems Inc. < -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Migration from z/VM to KVM
Hi Jim, We have no documentation dedicated to migrations from z/VM to KVM. Are there any particular issues that we could address in z/VM to keep the customer happy, or is the decision to move to KVM already a done deal? So, if you want to get started, it is important to verify that KVM provides all pieces required in the current z/VM based installation. There is a wide variety of solutions in the open source ecosystem to address customers' needs, but it is also easy to get lost in the selection - KVM in the Linux distributions is a starting point, but usually no integrated solution with all bells and whistles. You can find our official documentation on KVM at https://www.ibm.com/support/knowledgecenter/en/linuxonibm/liaaf/lnz_r_kvm_base.html. Specifically, check the "KVM Virtual Server Management" document. Mit freundlichen Grüßen / Kind regards Stefan Raspl Linux on Z & Virtualization Development --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzender des Aufsichtsrats: Matthias Hartmann Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 On 28.08.19 17:28, Jim Elliott wrote: > I have a customer considering a migration from z/VM to KVM (ClefOS) on > their LinuxONE machines. They are a university with no Z skills (we provide > those) so they are looking at simplifying their environment as they grow. > Is there documentation / tips anywhere on how to do such a migration? > > Jim Elliott > Senior Consultant - GlassHouse Systems Inc. > > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> > Virus-free. > www.avast.com > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> > <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Migration from z/VM to KVM
I have a customer considering a migration from z/VM to KVM (ClefOS) on their LinuxONE machines. They are a university with no Z skills (we provide those) so they are looking at simplifying their environment as they grow. Is there documentation / tips anywhere on how to do such a migration? Jim Elliott Senior Consultant - GlassHouse Systems Inc. <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
New Linux How-To: "Configuring Crypto Express Adapters for KVM Guests"
Linux on Z and LinuxONE KVM guests on IBM Z and LinuxONE can now use Crypto Express Adapters. See "Configuring Crypto Express Adapters for KVM Guests" IBM Knowledge Center: https://www.ibm.com/support/knowledgecenter/linuxonibm/com.ibm.linux.z.lxhq/lxhq_c_welcome.html Dorothea Matthaeus Linux on Z and LinuxONE Information Development IBM Deutschland Research and Development GmbH -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
KVM vs. zVM - defacto comparison
Hello ... Anyone have a good PDF, PPT or Redbook comparing latest KVM to zVM. Pros Cons and features ?? We are deploying RHEL 7.6 shortly for the first time on a RockHopper II .. current plan is to deploy z/VM 7.1 ... but need KVM comparison. Thanks ... Daniel M. Hines Mainframe Systems Programming United Parcel Service Phone: (678) 746-4653 / 5 - 480-4653 Email: dmhi...@ups.com<mailto:dmhi...@ups.com> Would you rather plow a field with one ox or one thousand chickens? -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: KVM guest networking under z/VM
On Tuesday, 01/08/2019 at 05:14 GMT, Alan Haff wrote: > I've asked the owner of the z/VM host to make the change. I'll report back with > the results. I also suggest that you move from Guest LAN to a VSWITCH. By forcing the traffic to a z/VM-resident gateway, you add latency and increase CPU utilization. Firewalls and routers should be external to the Z box. Alan Altmark Senior Managing z/VM and Linux Consultant IBM Systems Lab Services IBM Z Delivery Practice ibm.com/systems/services/labservices office: 607.429.3323 mobile; 607.321.7556 alan_altm...@us.ibm.com IBM Endicott -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: KVM guest networking under z/VM
>-Original Message- >From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of >Christian Borntraeger >Sent: Tuesday, January 8, 2019 00:36 >To: LINUX-390@VM.MARIST.EDU >Subject: Re: KVM guest networking under z/VM . . . >as already said, can you use layer2? I've asked the owner of the z/VM host to make the change. I'll report back with the results. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: KVM guest networking under z/VM
On 03.01.2019 19:32, Alan Haff wrote: > I'm setting up a KVM-hosted guest in a SLES12 VM running under z/VM and I'm > not able to get networking going in the KVM guest. > > Host: z/VM 6.4 > KVM host: SLES12SP4 > KVM guest: SLES12SP4 > > (The KVM host must run under z/VM; I don't have any control over that.) For what its worth, this will have non-ideal performance, but it should work anyway. Reason is that z/VM "emulates" the hardware virtualization (the sie instruction) in that case. In fact, it actually tries to translate KVMs sie control blocks into a shadow control block and runs the KVM guest as a shadowed z/VM guest and fakes the result so that the kvm host "sees" what it would see on real hardware. It also has to shadow all page table actions of the kvm host, so I strongly suggest to have enough memory (no paging) in the KVM host to minimize the impact. Not sure about z/VM, but I would guess that paging in z/VM also hurts as this also requires tear down of shadow page tables - this is at least the case when running KVM under KVM. We usually do not test this scenario, but I know that some developers do have at least one development system with KVM under z/VM so it gets some testing. Not sure if you can talk about that, but I am interested in the use case. I expect to have z/VM guests all over the place (in your case another z/VM guest) or KVM only installations. Mixed mode only with different LPARs. Are there interesting use cases that would suggest that we invest more time in making sure that KVM runs well under z/VM? [...] > The macvtap0 device does get created when I start the KVM guest with 'virsh > start sles12': as already said, can you use layer2? Christian -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: KVM guest networking under z/VM
On 08.01.2019 01:35, Robert J Brenneman wrote: > KVM Host bridges require a L2 network interface with the 'bridge_role' > attribute set on the OSA device supporting the bridge. > ref: https://public.dhe.ibm.com/software/dw/linux390/docu/lhs4dd05.pdf > chapter 14, section Layer 2 promiscuous mode on p205. > > But you're not using a L2 Vswitch - the 'q lan' response indicates it's a > L3 : 'PERSISTENT RESTRICTED IP' > if it had been a L2 network it would have said 'PERSISTENT RESTRICTED ETH' > > > But wait - you're not trying to run a KVM Bridge , you're doing MACVTAP > which attaches the whole eth interface to the KVM guest. Well, not exactly. macvtap does not attach the whole eth, it registers one mac address at that interface (via osa address table) and then passes along the traffic for that mac address to the guest. Now this (as well as bridges and openvswitch) always require a layer 2 interface. If you really HAVE to use a layer3 interface only (e.g. a hipersocket that connects to z/OS) you can do routing in the KVM host. Examples of how to use that can be found in the paper Exploiting HiperSockets in a KVM Environment Using IP Routing with Linux on Z - Results and Findings https://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP102746 > If you have the option to create a L2 LAN instead, try that first and see > if it works. > > If you can't create a L2 LAN to use for the MACVTAP interface, I am not > sure whether the L3 LAN you have will work. L3 LAN doesn't do ARPing at > all so I'm not surprised wireshark is showing you no response to the > outgoing ARP. The virtual machine doesn't interact with the MACVTAP using > the qeth driver internally, so you can't really put it in L3 mode to make > it work that way. > > I hope you have the option to create a L2 Guest LAN or vswitch for the KVM > host's interface - the only other option I can think of would be to > dedicate a triplet of OSA devices ( Read/Write/Data ) directly to the KVM > Host's VM Guest. > > On Thu, Jan 3, 2019 at 5:22 PM Alan Haff wrote: > >> I'm setting up a KVM-hosted guest in a SLES12 VM running under z/VM and >> I'm not able to get networking going in the KVM guest. >> >> Host: z/VM 6.4 >> KVM host: SLES12SP4 >> KVM guest: SLES12SP4 >> >> (The KVM host must run under z/VM; I don't have any control over that.) >> >> The KVM guest's network is defined as: >> >> >> >> >> >> >> which, after 'virsh define sles12.xml', becomes: >> >> >> >> >> >> >> >> >> >> >> The macvtap0 device does get created when I start the KVM guest with >> 'virsh start sles12': >> >> 4: macvtap0@eth0: mtu 1492 >> qdisc pfifo_fast state UP mode DEFAULT group default qlen 500 >> link/ether 52:54:00:93:f4:ce brd ff:ff:ff:ff:ff:ff >> >> Running WireShark on the KVM host when I try to ping the default gateway >> from within the KVM guest, I can see ARP packets on the macvtap device (and >> the transmit packet count increases) but I never see any ARP replies coming >> back: >> >> macvtap0 Link encap:Ethernet HWaddr 52:54:00:93:F4:CE >> UP BROADCAST RUNNING PROMISC MULTICAST MTU:1492 Metric:1 >> RX packets:0 errors:0 dropped:0 overruns:0 frame:0 >> TX packets:10 errors:0 dropped:0 overruns:0 carrier:0 >> collisions:0 txqueuelen:500 >> RX bytes:0 (0.0 b) TX bytes:420 (420.0 b) >> >> I've confirmed that MACPROTECT is off: >> >> q lan >> 00: LAN SYSTEM LANATTC Type: QDIOConnected: 5Maxconn: INFINITE >> 00: PERSISTENT RESTRICTEDIPAccounting: OFF >> 00: IPTimeout: 5 MAC Protection: OFF >> 00: Isolation Status: OFFVEPA Status: OFF >> q vmlan >> 00: VMLAN maintenance level: >> 00: Latest Service: VM65918 >> 00: VMLAN MAC address assignment: >> 00: System MAC Protection: OFF >> 00: MACADDR Prefix: 02DF02 USER Prefix: 02DF02 >> 00: MACIDRANGE SYSTEM: 01-FF >> 00: USER: 00-00 >> 00: VMLAN default accounting status: >> 00: SYSTEM Accounting: OFF USER Accounting: OFF >> 00: VMLAN general activity: >> 00: PERSISTENT Limit: INFINITE Current: 20 >> 00: TRANSIENT Limit: INFINITE Current: 0 >> 00: Trace Pages: 8 >> 00: VMLAN Directory Network Authorization: ENABLED >> 00: IVL Domain: None >> >> >> Any ideas about what I could be missing? -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: KVM guest networking under z/VM
KVM Host bridges require a L2 network interface with the 'bridge_role' attribute set on the OSA device supporting the bridge. ref: https://public.dhe.ibm.com/software/dw/linux390/docu/lhs4dd05.pdf chapter 14, section Layer 2 promiscuous mode on p205. But you're not using a L2 Vswitch - the 'q lan' response indicates it's a L3 : 'PERSISTENT RESTRICTED IP' if it had been a L2 network it would have said 'PERSISTENT RESTRICTED ETH' But wait - you're not trying to run a KVM Bridge , you're doing MACVTAP which attaches the whole eth interface to the KVM guest. If you have the option to create a L2 LAN instead, try that first and see if it works. If you can't create a L2 LAN to use for the MACVTAP interface, I am not sure whether the L3 LAN you have will work. L3 LAN doesn't do ARPing at all so I'm not surprised wireshark is showing you no response to the outgoing ARP. The virtual machine doesn't interact with the MACVTAP using the qeth driver internally, so you can't really put it in L3 mode to make it work that way. I hope you have the option to create a L2 Guest LAN or vswitch for the KVM host's interface - the only other option I can think of would be to dedicate a triplet of OSA devices ( Read/Write/Data ) directly to the KVM Host's VM Guest. On Thu, Jan 3, 2019 at 5:22 PM Alan Haff wrote: > I'm setting up a KVM-hosted guest in a SLES12 VM running under z/VM and > I'm not able to get networking going in the KVM guest. > > Host: z/VM 6.4 > KVM host: SLES12SP4 > KVM guest: SLES12SP4 > > (The KVM host must run under z/VM; I don't have any control over that.) > > The KVM guest's network is defined as: > > > > > > > which, after 'virsh define sles12.xml', becomes: > > > > > > > > > > > The macvtap0 device does get created when I start the KVM guest with > 'virsh start sles12': > > 4: macvtap0@eth0: mtu 1492 > qdisc pfifo_fast state UP mode DEFAULT group default qlen 500 > link/ether 52:54:00:93:f4:ce brd ff:ff:ff:ff:ff:ff > > Running WireShark on the KVM host when I try to ping the default gateway > from within the KVM guest, I can see ARP packets on the macvtap device (and > the transmit packet count increases) but I never see any ARP replies coming > back: > > macvtap0 Link encap:Ethernet HWaddr 52:54:00:93:F4:CE > UP BROADCAST RUNNING PROMISC MULTICAST MTU:1492 Metric:1 > RX packets:0 errors:0 dropped:0 overruns:0 frame:0 > TX packets:10 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:500 > RX bytes:0 (0.0 b) TX bytes:420 (420.0 b) > > I've confirmed that MACPROTECT is off: > > q lan > 00: LAN SYSTEM LANATTC Type: QDIOConnected: 5Maxconn: INFINITE > 00: PERSISTENT RESTRICTEDIPAccounting: OFF > 00: IPTimeout: 5 MAC Protection: OFF > 00: Isolation Status: OFFVEPA Status: OFF > q vmlan > 00: VMLAN maintenance level: > 00: Latest Service: VM65918 > 00: VMLAN MAC address assignment: > 00: System MAC Protection: OFF > 00: MACADDR Prefix: 02DF02 USER Prefix: 02DF02 > 00: MACIDRANGE SYSTEM: 01-FF > 00: USER: 00-00 > 00: VMLAN default accounting status: > 00: SYSTEM Accounting: OFF USER Accounting: OFF > 00: VMLAN general activity: > 00: PERSISTENT Limit: INFINITE Current: 20 > 00: TRANSIENT Limit: INFINITE Current: 0 > 00: Trace Pages: 8 > 00: VMLAN Directory Network Authorization: ENABLED > 00: IVL Domain: None > > > Any ideas about what I could be missing? > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > -- > For more information on Linux on System z, visit > http://wiki.linuxvm.org/ > -- Jay Brenneman -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: KVM guest networking under z/VM
Alan, To me, it looks like you have defined a z/VM Guest LAN (LANATTC) that is layer 3 (00: PERSISTENT RESTRICTEDIP) vs. Layer 2 (PERSISTENT UNRESTRICTED ETHERNET) Is the gateway a z/VM TCPIP machine? How is the LINK defined to z/VM TCP/IP (IP - later3 or ETHERNET - layer2)? What are the IP addresses on the z/VM TCPIP machine and the KVM host and guest machines? Regards, Jeff -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: KVM guest networking under z/VM
>-Original Message- >From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Alan Haff >Sent: Thursday, January 3, 2019 10:32 >To: LINUX-390@VM.MARIST.EDU >Subject: KVM guest networking under z/VM . . . >Any ideas about what I could be missing? More info... In the KVM guest I can see broadcast packets coming from other systems on the same subnet. When I try to ping one of those other systems from within the KVM guest, the guest ARPs for a MAC address and never receives a response. Side note: it seems odd to me that the guest would ARP for the MAC address. I'd have thought the address would've been in the guest's ARP cache. Dumping the ARP cache in the guest shows the HWaddress for the other systems as "(incomplete)". -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
KVM guest networking under z/VM
I'm setting up a KVM-hosted guest in a SLES12 VM running under z/VM and I'm not able to get networking going in the KVM guest. Host: z/VM 6.4 KVM host: SLES12SP4 KVM guest: SLES12SP4 (The KVM host must run under z/VM; I don't have any control over that.) The KVM guest's network is defined as: which, after 'virsh define sles12.xml', becomes: The macvtap0 device does get created when I start the KVM guest with 'virsh start sles12': 4: macvtap0@eth0: mtu 1492 qdisc pfifo_fast state UP mode DEFAULT group default qlen 500 link/ether 52:54:00:93:f4:ce brd ff:ff:ff:ff:ff:ff Running WireShark on the KVM host when I try to ping the default gateway from within the KVM guest, I can see ARP packets on the macvtap device (and the transmit packet count increases) but I never see any ARP replies coming back: macvtap0 Link encap:Ethernet HWaddr 52:54:00:93:F4:CE UP BROADCAST RUNNING PROMISC MULTICAST MTU:1492 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:10 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:420 (420.0 b) I've confirmed that MACPROTECT is off: q lan 00: LAN SYSTEM LANATTC Type: QDIOConnected: 5Maxconn: INFINITE 00: PERSISTENT RESTRICTEDIPAccounting: OFF 00: IPTimeout: 5 MAC Protection: OFF 00: Isolation Status: OFFVEPA Status: OFF q vmlan 00: VMLAN maintenance level: 00: Latest Service: VM65918 00: VMLAN MAC address assignment: 00: System MAC Protection: OFF 00: MACADDR Prefix: 02DF02 USER Prefix: 02DF02 00: MACIDRANGE SYSTEM: 01-FF 00: USER: 00-00 00: VMLAN default accounting status: 00: SYSTEM Accounting: OFF USER Accounting: OFF 00: VMLAN general activity: 00: PERSISTENT Limit: INFINITE Current: 20 00: TRANSIENT Limit: INFINITE Current: 0 00: Trace Pages: 8 00: VMLAN Directory Network Authorization: ENABLED 00: IVL Domain: None Any ideas about what I could be missing? -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
KVM on Z: QEMU v3.1 Released
QEMU v2.11 is out! See http://kvmonz.blogspot.com/2018/12/qemu-v31-released.html for a list of highlights for KVM on z. Mit freundlichen Grüßen / Kind regards Stefan Raspl Linux on Z & Virtualization Development --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzender des Aufsichtsrats: Matthias Hartmann Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
KVM on Z - Knowledge Series: Use virt-install for KVM Guest Installations
Tired of fiddling with guest XML files and virtual DJing with ISO images? Then our latest entry in our Knowledge Series might come handy! Plus it also offers access to further Linux distributions on IBM Z! Read more on how virt-install can help at http://kvmonz.blogspot.com/2018/07/knowledge-use-virt-install-for-kvm.html Mit freundlichen Grüßen / Kind regards Stefan Raspl Linux on Z & Virtualization Development --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Alpine Linux 3.8 rc2 on z/VM and KVM
On 13.06.2018 05:58, Tuan M. Hoang wrote: > Hello, > > The Alpine Linux Project has released the the 2nd release candidate for > its 3.8 stable series with support for z/VM and KVM. > > For the installation guide and more information, please visit : > https://wiki.alpinelinux.org/wiki/S390x. > > For running Alpine in Docker, please visit : > https://wiki.alpinelinux.org/wiki/S390x/Docker. > > If you have any questions or comments, please reply to this thread or > send an email to this list, or alpine-de...@lists.alpinelinux.org, or > reach out at IRC channels #alpine-linux or #alpine-devel at Freenode, or > use #alpinelinux on Twitter. Very cool! We have added a page to our blog, illustrating how to get started based on the ISO image: http://kvmonz.blogspot.com/p/getting-started-alpine-linux.html Mit freundlichen Grüßen / Kind regards Stefan Raspl Linux on Z & Virtualization Development --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Alpine Linux 3.8 rc2 on z/VM and KVM
On 06/22/2018 05:18 PM, R P Herrold wrote: > On Thu, 21 Jun 2018, Christian Borntraeger wrote: > >> I can easily boot that iso image with kvm: >> >> $ qemu-system-s390x -enable-kvm -nographic \ >> -cdrom alpine-standard-3.8.0_rc8-s390x.iso >> LOADPARM=[] > > Hi, Christian, > > What version of qemu-system-s390x are you running? The KVM mode of qemu 2.12 build from source works fine. For IBM z, the version in SLES12/15 Ubuntu 16.04 and 18.04 as well as RHEL 7-5 alt are fine. > > $ qemu-system-s390x -version > > RHEL 7 derived seems to have a missing feature in glib-2 ; I > have filed: > https://bugzilla.redhat.com/show_bug.cgi?id=1594304 > > [herrold@centos-7 ~]$ qemu-system-s390x -version You seem to use the system _emulation_ of QEMU - and a very old one. I have not tried this. > > (process:17483): GLib-WARNING **: gmem.c:483: custom memory > allocation vtable not supported > QEMU emulator version 2.0.0, Copyright (c) 2003-2008 Fabrice > Bellard > [herrold@centos-7 ~]$ -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Alpine Linux 3.8 rc2 on z/VM and KVM
On Thu, 21 Jun 2018, Christian Borntraeger wrote: > I can easily boot that iso image with kvm: > > $ qemu-system-s390x -enable-kvm -nographic \ > -cdrom alpine-standard-3.8.0_rc8-s390x.iso > LOADPARM=[] Hi, Christian, What version of qemu-system-s390x are you running? $ qemu-system-s390x -version RHEL 7 derived seems to have a missing feature in glib-2 ; I have filed: https://bugzilla.redhat.com/show_bug.cgi?id=1594304 [herrold@centos-7 ~]$ qemu-system-s390x -version (process:17483): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported QEMU emulator version 2.0.0, Copyright (c) 2003-2008 Fabrice Bellard [herrold@centos-7 ~]$ -- Russ herrold -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Alpine Linux 3.8 rc2 on z/VM and KVM
On 06/21/2018 06:35 PM, Tuan M. Hoang wrote: > On 06/21/2018 11:51 AM, Christian Borntraeger wrote: >> >> >> On 06/21/2018 04:35 PM, Tuan M. Hoang wrote: >>> Hi Christian, >>> >>> On 06/13/2018 03:32 AM, Christian Borntraeger wrote: >>>> On 06/13/2018 05:58 AM, Tuan M. Hoang wrote: >>>>> Hello, >>>>> >>>>> The Alpine Linux Project has released the the 2nd release candidate for >>>>> its 3.8 stable series with support for z/VM and KVM. >>>>> >>>>> For the installation guide and more information, please visit : >>>>> https://wiki.alpinelinux.org/wiki/S390x. >>>> >>>> Thanks for the good writeup. >>>> Will there also be a bootable iso image to simplify the KVM installation >>>> even >>>> more? >>> >>> rc8 includes a bootable iso image for KVM. Please try it out at: >>> http://dl-cdn.alpinelinux.org/alpine/v3.8/releases/s390x/alpine-standard-3.8.0_rc8-s390x.iso >> >> I can easily boot that iso image with kvm: >> >> $ qemu-system-s390x -enable-kvm -nographic -cdrom >> alpine-standard-3.8.0_rc8-s390x.iso >> LOADPARM=[] >> Using virtio-blk. >> ISO boot image size verified >> Uncompressing Linux... Ok, booting the kernel. >> [...] >> Welcome to Alpine Linux 3.8 >> Kernel 4.14.51-0-vanilla on an s390x (/dev/console) >> localhost login: >> >> >> same happens with virt-install. So its an ready to use image but not an >> installer? >> > > Please login as root (no pwd) and motd will indicate running setup-alpine to > start the installer. > > Alpine boot media (both netboot and ISO on all arch) are like a live cd > image, where you can choose to explore Alpine or run the installer. Yes, works perfectly fine under KVM. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Alpine Linux 3.8 rc2 on z/VM and KVM
On 06/21/2018 11:51 AM, Christian Borntraeger wrote: > > > On 06/21/2018 04:35 PM, Tuan M. Hoang wrote: >> Hi Christian, >> >> On 06/13/2018 03:32 AM, Christian Borntraeger wrote: >>> On 06/13/2018 05:58 AM, Tuan M. Hoang wrote: >>>> Hello, >>>> >>>> The Alpine Linux Project has released the the 2nd release candidate for >>>> its 3.8 stable series with support for z/VM and KVM. >>>> >>>> For the installation guide and more information, please visit : >>>> https://wiki.alpinelinux.org/wiki/S390x. >>> >>> Thanks for the good writeup. >>> Will there also be a bootable iso image to simplify the KVM installation >>> even >>> more? >> >> rc8 includes a bootable iso image for KVM. Please try it out at: >> http://dl-cdn.alpinelinux.org/alpine/v3.8/releases/s390x/alpine-standard-3.8.0_rc8-s390x.iso > > I can easily boot that iso image with kvm: > > $ qemu-system-s390x -enable-kvm -nographic -cdrom > alpine-standard-3.8.0_rc8-s390x.iso > LOADPARM=[] > Using virtio-blk. > ISO boot image size verified > Uncompressing Linux... Ok, booting the kernel. > [...] > Welcome to Alpine Linux 3.8 > Kernel 4.14.51-0-vanilla on an s390x (/dev/console) > localhost login: > > > same happens with virt-install. So its an ready to use image but not an > installer? > Please login as root (no pwd) and motd will indicate running setup-alpine to start the installer. Alpine boot media (both netboot and ISO on all arch) are like a live cd image, where you can choose to explore Alpine or run the installer. >> >>>> >>>> For running Alpine in Docker, please visit : >>>> https://wiki.alpinelinux.org/wiki/S390x/Docker. >>>> >>>> If you have any questions or comments, please reply to this thread or >>>> send an email to this list, or alpine-de...@lists.alpinelinux.org, or >>>> reach out at IRC channels #alpine-linux or #alpine-devel at Freenode, or >>>> use #alpinelinux on Twitter. >>>> >> >> Tuan >> > -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Alpine Linux 3.8 rc2 on z/VM and KVM
On 06/21/2018 04:35 PM, Tuan M. Hoang wrote: > Hi Christian, > > On 06/13/2018 03:32 AM, Christian Borntraeger wrote: >> On 06/13/2018 05:58 AM, Tuan M. Hoang wrote: >>> Hello, >>> >>> The Alpine Linux Project has released the the 2nd release candidate for >>> its 3.8 stable series with support for z/VM and KVM. >>> >>> For the installation guide and more information, please visit : >>> https://wiki.alpinelinux.org/wiki/S390x. >> >> Thanks for the good writeup. >> Will there also be a bootable iso image to simplify the KVM installation even >> more? > > rc8 includes a bootable iso image for KVM. Please try it out at: > http://dl-cdn.alpinelinux.org/alpine/v3.8/releases/s390x/alpine-standard-3.8.0_rc8-s390x.iso I can easily boot that iso image with kvm: $ qemu-system-s390x -enable-kvm -nographic -cdrom alpine-standard-3.8.0_rc8-s390x.iso LOADPARM=[] Using virtio-blk. ISO boot image size verified Uncompressing Linux... Ok, booting the kernel. [...] Welcome to Alpine Linux 3.8 Kernel 4.14.51-0-vanilla on an s390x (/dev/console) localhost login: same happens with virt-install. So its an ready to use image but not an installer? > >>> >>> For running Alpine in Docker, please visit : >>> https://wiki.alpinelinux.org/wiki/S390x/Docker. >>> >>> If you have any questions or comments, please reply to this thread or >>> send an email to this list, or alpine-de...@lists.alpinelinux.org, or >>> reach out at IRC channels #alpine-linux or #alpine-devel at Freenode, or >>> use #alpinelinux on Twitter. >>> > > Tuan > -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Alpine Linux 3.8 rc2 on z/VM and KVM
Hi Christian, On 06/13/2018 03:32 AM, Christian Borntraeger wrote: > On 06/13/2018 05:58 AM, Tuan M. Hoang wrote: >> Hello, >> >> The Alpine Linux Project has released the the 2nd release candidate for >> its 3.8 stable series with support for z/VM and KVM. >> >> For the installation guide and more information, please visit : >> https://wiki.alpinelinux.org/wiki/S390x. > > Thanks for the good writeup. > Will there also be a bootable iso image to simplify the KVM installation even > more? rc8 includes a bootable iso image for KVM. Please try it out at: http://dl-cdn.alpinelinux.org/alpine/v3.8/releases/s390x/alpine-standard-3.8.0_rc8-s390x.iso >> >> For running Alpine in Docker, please visit : >> https://wiki.alpinelinux.org/wiki/S390x/Docker. >> >> If you have any questions or comments, please reply to this thread or >> send an email to this list, or alpine-de...@lists.alpinelinux.org, or >> reach out at IRC channels #alpine-linux or #alpine-devel at Freenode, or >> use #alpinelinux on Twitter. >> Tuan -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Alpine Linux 3.8 rc2 on z/VM and KVM
Hi Christian, On 2018-06-13 03:32, Christian Borntraeger wrote: On 06/13/2018 05:58 AM, Tuan M. Hoang wrote: Hello, The Alpine Linux Project has released the the 2nd release candidate for its 3.8 stable series with support for z/VM and KVM. For the installation guide and more information, please visit : https://wiki.alpinelinux.org/wiki/S390x. Thanks for the good writeup. Will there also be a bootable iso image to simplify the KVM installation even more? Yes there will be one. We are looking forward to making it asap or at most in 3.8.1. Thanks. For running Alpine in Docker, please visit : https://wiki.alpinelinux.org/wiki/S390x/Docker. If you have any questions or comments, please reply to this thread or send an email to this list, or alpine-de...@lists.alpinelinux.org, or reach out at IRC channels #alpine-linux or #alpine-devel at Freenode, or use #alpinelinux on Twitter. Many thanks, Tuan -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Alpine Linux 3.8 rc2 on z/VM and KVM
On 06/13/2018 05:58 AM, Tuan M. Hoang wrote: > Hello, > > The Alpine Linux Project has released the the 2nd release candidate for > its 3.8 stable series with support for z/VM and KVM. > > For the installation guide and more information, please visit : > https://wiki.alpinelinux.org/wiki/S390x. Thanks for the good writeup. Will there also be a bootable iso image to simplify the KVM installation even more? > > For running Alpine in Docker, please visit : > https://wiki.alpinelinux.org/wiki/S390x/Docker. > > If you have any questions or comments, please reply to this thread or > send an email to this list, or alpine-de...@lists.alpinelinux.org, or > reach out at IRC channels #alpine-linux or #alpine-devel at Freenode, or > use #alpinelinux on Twitter. > > Many thanks, > Tuan -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Alpine Linux 3.8 rc2 on z/VM and KVM
Hello, The Alpine Linux Project has released the the 2nd release candidate for its 3.8 stable series with support for z/VM and KVM. For the installation guide and more information, please visit : https://wiki.alpinelinux.org/wiki/S390x. For running Alpine in Docker, please visit : https://wiki.alpinelinux.org/wiki/S390x/Docker. If you have any questions or comments, please reply to this thread or send an email to this list, or alpine-de...@lists.alpinelinux.org, or reach out at IRC channels #alpine-linux or #alpine-devel at Freenode, or use #alpinelinux on Twitter. Many thanks, Tuan -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
KVM on Z - Knowledge Series: Managing KVM on IBM Z with oVirt
See kvmonz.blogspot.com/2018/05/knowledge-series-managing-kvm-on-ibm-z.html for a new entry in our "knowledge" series, providing step-by-step instructions on how to include IBM Z hosts in an oVirt data center. Mit freundlichen Grüßen / Kind regards Stefan Raspl Linux on Z & Virtualization Development --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
KVM on Z - Getting Started: RHEL 7.5 Instructions added
Instructions for RHEL7.5 were added to our "Getting Started with KVM on Z" series. See the actual page at http://kvmonz.blogspot.com/2018/05/getting-started-rhel-75-instructions.html Mit freundlichen Grüßen / Kind regards Stefan Raspl Linux on Z & Virtualization Development --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
KVM on Z: QEMU v2.12 released
See http://kvmonz.blogspot.co.uk/2018/05/qemu-v212-released.html for an update on what's new for IBM Z in QEMU v2.12. Mit freundlichen Grüßen / Kind regards Stefan Raspl Linux on Z & Virtualization Development --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
RHEL 7.5 with support for KVM on z released
Red Hat Enterprise Linux 7.5 is out - see the following link for details regarding KVM on z support: http://kvmonz.blogspot.com/2018/04/rhel-75-with-support-for-kvm-on-z.html Mit freundlichen Grüßen / Kind regards Stefan Raspl Linux on Z & Virtualization Development --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
KVM on Z: SLES12 SP3 Updates
SLES12SP3, released late last year, received a couple of mostly performance and security-related updates in support of IBM z14 and LinuxONE through the maintenance web updates. See http://kvmonz.blogspot.co.uk/2018/03/sles12-sp3-updates.html for further details. Mit freundlichen Grüßen / Kind regards Stefan Raspl Linux on Z & Virtualization Development --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
RHEL 7.5 Beta supports KVM on Z
See http://kvmonz.blogspot.com/2018/02/rhel-75-beta-supports-kvm-on-z.html Mit freundlichen Grüßen / Kind regards Stefan Raspl Linux on Z & Virtualization Development --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
KVM on Z: QEMU 2.11 Released
QEMU v2.11 is out! See http://kvmonz.blogspot.de/2017/12/qemu-v211-released.html for a list of highlights for KVM on z. Mit freundlichen Grüßen / Kind regards Stefan Raspl KVM & Linux on z Systems IBM Systems & Technology Group, Systems Software Development / SW Linux on z Systems Dev & Service --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Open Vswitch and SLES12 KVM
Hi Folks! The place that Robert pointed it is correct, but to update it we use a script called qeth_configure (I guess it would be similar to chzdev but for SuSE and network only) So the answer was: qeth_configure -l -o "bridge_role=primary" 1 Thank you! Tito On Tue, Dec 12, 2017 at 1:23 PM, Christian Ehrhardt < christian.ehrha...@canonical.com> wrote: > On Tue, Dec 12, 2017 at 4:05 PM, Robert J Brenneman > wrote: > > I have the following at the very end of my > > /etc/udev/rules.d/51-qeth-0.0.1080.rules > > I think that is close to where chzdev [1] would place it, but IIRC > SLES12 was not yet on chzdev right? > If they are I beg your pardon - in that case you can enable it through > chzdev and it will take care to store persistent config in the udev > rules. > > [1]: https://www.ibm.com/support/knowledgecenter/en/linuxonibm/ > com.ibm.linux.z.lhdd/lhdd_r_chzdev_cmd.html > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > -- > For more information on Linux on System z, visit > http://wiki.linuxvm.org/ > -- Linux User #387870 . _/_õ|__| ..º[ .-.___.-._| . . . . .__( o)__( o).:___ -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: KVM on Z: Getting started
The "Migrating from KVM for IBM z Systems to KVM integrated with SUSE Linux Enterprise Server" document - https://www.suse.com/documentation/suse-best-practices/kvm-migration-ibmz-to-sles/data/kvm-migration-ibmz-to-sles.html - can be used a getting started guide to install and manage KVM instances using KVM in SLES. One item that is not included in the document is that I have also been using virt-manager running on my x86 openSUSE systems and connected to libvirtd on SLES on Z to create, manage and modify KVM Z instances. Regards, Mike -- Mike Friesenegger Technology Strategist - IBM Global Alliance SUSE mi...@suse.com (P)+1 303.249.0817 On 12/01/2017 06:57 AM, Stefan Raspl wrote: There's a new series of articles coming up providing step-by-step instructions on how to run KVM on Z. See http://kvmonz.blogspot.de/p/getting-started-with-kvm-on-z.html for an overview, and http://kvmonz.blogspot.de/p/getting-started.html for a first article covering SLES12 SP3. Mit freundlichen Grüßen / Kind regards Stefan Raspl KVM & Linux on z Systems IBM Systems & Technology Group, Systems Software Development / SW Linux on z Systems Dev & Service --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Open Vswitch and SLES12 KVM
SLES 12 SP2 seems to have chzdev. -Original Message- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Christian Ehrhardt Sent: Tuesday, December 12, 2017 7:24 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: [LINUX-390] Open Vswitch and SLES12 KVM On Tue, Dec 12, 2017 at 4:05 PM, Robert J Brenneman wrote: > I have the following at the very end of my > /etc/udev/rules.d/51-qeth-0.0.1080.rules I think that is close to where chzdev [1] would place it, but IIRC SLES12 was not yet on chzdev right? If they are I beg your pardon - in that case you can enable it through chzdev and it will take care to store persistent config in the udev rules. [1]: https://www.ibm.com/support/knowledgecenter/en/linuxonibm/com.ibm.linux.z.lhdd/lhdd_r_chzdev_cmd.html
Re: Open Vswitch and SLES12 KVM
On Tue, Dec 12, 2017 at 4:05 PM, Robert J Brenneman wrote: > I have the following at the very end of my > /etc/udev/rules.d/51-qeth-0.0.1080.rules I think that is close to where chzdev [1] would place it, but IIRC SLES12 was not yet on chzdev right? If they are I beg your pardon - in that case you can enable it through chzdev and it will take care to store persistent config in the udev rules. [1]: https://www.ibm.com/support/knowledgecenter/en/linuxonibm/com.ibm.linux.z.lhdd/lhdd_r_chzdev_cmd.html -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Open Vswitch and SLES12 KVM
I have the following at the very end of my
/etc/udev/rules.d/51-qeth-0.0.1080.rules
file:
>>>
ACTION=="add", SUBSYSTEM=="ccwgroup", KERNEL=="0.0.1080", ATTR{layer2}="1"
ACTION=="add", SUBSYSTEM=="ccwgroup", KERNEL=="0.0.1080",
ATTR{buffer_count}="128"
ACTION=="add", SUBSYSTEM=="ccwgroup", KERNEL=="0.0.1080",
ATTR{bridge_role}="primary"
ACTION=="add", SUBSYSTEM=="ccwgroup", KERNEL=="0.0.1080",
ATTR{bridge_state}="active"
ACTION=="add", SUBSYSTEM=="ccwgroup", KERNEL=="0.0.1080", ATTR{online}="1"
>>>
--
Jay Brenneman
--
For LINUX-390 subscribe / signoff / archive access instructions,
send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit
http://www.marist.edu/htbin/wlvindex?LINUX-390
--
For more information on Linux on System z, visit
http://wiki.linuxvm.org/
Kvm on Z: Ubuntu Cloud Images
Instructions on how to setup one of the Ubuntu Cloud Images were added to the "Getting Started with KVM on Z" series. See the entry page at http://kvmonz.blogspot.com/p/getting-started-with-kvm-on-z.html Mit freundlichen Grüßen / Kind regards Stefan Raspl KVM & Linux on z Systems IBM Systems & Technology Group, Systems Software Development / SW Linux on z Systems Dev & Service --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Open Vswitch and SLES12 KVM
On Mon, Dec 11, 2017 at 11:37 PM, Tito Garrido wrote: > Hi Folks, > > What is the recommended setup for open vswitch on SLES 12 on z? > > I can see: > https://www.suse.com/documentation/sles-12/book_sle_admin/data/sec_ovs.html > > But it says nothing about BRIDGEPORT. > > Where should I put OPTIONS="layer2=1 bridge_role=primary > > Is "OPTIONS" a recognized option on SuSE? Hi Tito, until you have found where the "right" place in a config file would be you can always control the device drivers directly (I don't expect wicked and co to set it back). >From the device driver manual for SLES12-SP3: - layer2 [1] - bridge_port [2] [1]: https://www.ibm.com/support/knowledgecenter/en/linuxonibm/com.ibm.linux.z.lhdd/lhdd_t_qeth_wrk_layer2.html [2]: https://www.ibm.com/support/knowledgecenter/linuxonibm/com.ibm.linux.z.lhdd/lhdd_t_qeth_wrk_hsbrdg.html -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Open Vswitch and SLES12 KVM
Hi Folks, What is the recommended setup for open vswitch on SLES 12 on z? I can see: https://www.suse.com/documentation/sles-12/book_sle_admin/data/sec_ovs.html But it says nothing about BRIDGEPORT. Where should I put OPTIONS="layer2=1 bridge_role=primary Is "OPTIONS" a recognized option on SuSE? Regards, Tito -- Linux User #387870 . _/_õ|__| ..º[ .-.___.-._| . . . . .__( o)__( o).:___ -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
KVM on Z: Getting Started with Ubuntu
Instructions for Ubuntu 16.04 to 17.10 were added to the "Getting Started with KVM on Z" series. See the entry page at http://kvmonz.blogspot.de/p/getting-started-with-kvm-on-z.html Mit freundlichen Grüßen / Kind regards Stefan Raspl KVM & Linux on z Systems IBM Systems & Technology Group, Systems Software Development / SW Linux on z Systems Dev & Service --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
KVM on Z: Getting started
There's a new series of articles coming up providing step-by-step instructions on how to run KVM on Z. See http://kvmonz.blogspot.de/p/getting-started-with-kvm-on-z.html for an overview, and http://kvmonz.blogspot.de/p/getting-started.html for a first article covering SLES12 SP3. Mit freundlichen Grüßen / Kind regards Stefan Raspl KVM & Linux on z Systems IBM Systems & Technology Group, Systems Software Development / SW Linux on z Systems Dev & Service --- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2177 E-Mail: stefan.ra...@de.ibm.com --- IBM Deutschland Research & Development GmbH / Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
