My linux in LPAR has an issue. Probably a missing device in fstab.
Should be an easy fix but I can't go into maintenance mode anymore. I
am pretty sure that in the past, using the "operating system messages"
in HMC I would just provide a password and it would log me in. But
this time I am in the lo
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 off
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
It's been a while but as far as I remember in redhat (clefos should be
similar), for single user mode (so no network) you can do a "#cp vi vmsg"
combo.
When the zipl screen shows up you have a few seconds to type in your choice
with additional kernel parameters.
So you can do for example
#cp vi v
On Thu, Apr 8, 2021, 12:12 PM Davis, Larry (National VM Capability) <
larry.dav...@dxc.com> wrote:
> We are seeing an Issue when Using Hipersockets connected to a DB2 system
> on z/OS
>
> When we perform a VMRELOCATE (LGR) to another member in the complex we
> lose the HS device and it goes offlin
On Tue, Nov 3, 2020 at 8:46 AM Grzegorz Powiedziuk
wrote:
> Hi, I could use some ideas. We moved a huge db2 from old p7 aix to rhel7
> on Z and we are having big performance issues.
>
What about enabling SMT in z/VM ? Would 10 cpu db2 take an advantage of
this? On the p8 they had SMT
On Tue, Nov 3, 2020 at 3:25 PM Jim Elliott wrote:
> Gregory,
>
> Yes, thrashing. :-)
>
>
I like my name better and it even fits better :)
I will keep an eye on page faults tomorrow but we are not overcommitting
memory at all. Unless something inside of db2 is cooking but in linux there
is no swap
On Tue, Nov 3, 2020 at 1:58 PM Grzegorz Powiedziuk
wrote:
> Thanks Christian.
> There is no pagging (swapping) here besides just regular kernel's house
> keeping (vm.swappiness =5 )
> rhel 7 doesn't give me diag_stat in the debug filesystem hmm
>
> On Tue, Nov 3
On Tue, Nov 3, 2020 at 1:57 PM Jim Elliott wrote:
> Gregory,
>
> The 9117-MMD could range from 1 chip/4 cores all the way up to 16 chips/64
> cores at either 3.80 or 4.22 GHz. If it has 15 cores, then it was likely
> the 4.22 GHz 5 chip/15 core version. Using 10 out of 15 cores (even at 100%
> bu
On Tue, Nov 3, 2020 at 1:35 PM r.stricklin wrote:
>
> I recently had a vaguely similar problem with a much smaller database on
> linux (x86, mysql for zabbix) that presented bizarre performance issues
> despite clearly having lots of resources left available.
>
> What our problem ended up being w
; On 03.11.20 14:46, Grzegorz Powiedziuk wrote:
> > Hi, I could use some ideas. We moved a huge db2 from old p7 aix to rhel7
> on
> > Z and we are having big performance issues.
> > Same memory, CPU number is down from 12 to 10. Although they had
> > multithreading ON so they
system has 1.4 to 2.0 times the capacity of the z114.
>
> Jim Elliott
> Senior IT Consultant - GlassHouse Systems Inc.
>
>
> On Tue, Nov 3, 2020 at 8:47 AM Grzegorz Powiedziuk
> wrote:
>
> > Hi, I could use some ideas. We moved a huge db2 from old p7 aix to rhel7
>
Hi, I could use some ideas. We moved a huge db2 from old p7 aix to rhel7 on
Z and we are having big performance issues.
Same memory, CPU number is down from 12 to 10. Although they had
multithreading ON so they saw more "cpus" We have faster disks (moved to
flash), faster FCP cards and faster netw
On Tue, Sep 8, 2020 at 10:13 AM Mark Post wrote:
>
> Gregory,
>
> In short, no. When a z/VM guest is logged on, it is created using what
> is in the currently active CP directory. Any and all limitations, such
> as the maximum amount of virtual storage, number of virtual CPUs, are
> encoded in th
On Mon, Sep 7, 2020 at 3:48 AM Herald ten Dam
wrote:
>
> you can dynamically add cpus. You changed only the definition. Have a look
> at this note form IBM:
>
> https://www.ibm.com/support/pages/dynamically-adding-or-removing-cpus-linux-zvm-guest
>
> thank you. This is actually what I was trying
Hello, I am almost sure I've done this before but now my memory is failing
me
The virtual machine had a "MACHINE ESA 8" and a list CPU 00...07
We changed it to MACHINE ESA 10 and added 2 more cpus to the list
Unfortunately I can't simply re-logon the VM. I was sure that after
updating the userdi
On Tue, Aug 18, 2020 at 8:53 PM marcy cortes
wrote:
> It's not fun...
>
> We have a .service file of type forking that calls a script of ours to
> start it and stop it.
> systemd is cool with that.
> However, if you stop and then start db2 outside of db2 it's no longer
> associated with that serv
Hello, I realize that this is not a typical s390 question but I hope that's
ok if I ask anyway. There is a high chance we have people here who run db2
on zLinux.
How do you solve auto start and more importantly auto stop of DB2 on
start/reboot/shutdowns ?
Seems like the autostart may be handled by
On Tue, Aug 18, 2020 at 9:01 AM Bill Bitner wrote:
>
> z/VM doesn't have a short cut to determine that no pages have changed. So
> for a guest over 100GB, it has to examine over 26 million things multiple
> times. Validating the I/O is drained is another aspect, but my guess is the
> traversing o
On Mon, Aug 17, 2020 at 12:26 PM Bill Bitner wrote:
> I take a few days off and a fun topic comes up that I mostly miss. :-)
>
> We did a Live Virtual Class on this back when SSI first came out. A few
> things have changed, but you may find value in it:
> http://www.vm.ibm.com/education/lvc/zvmlv
On Mon, Aug 17, 2020 at 8:52 AM Alan Altmark
wrote:
>
> You are equating things that should not be equated. If you have set up 4
> CTCs between each pair of members as recommended in the books, you have
> done all you can to make it go faster, given the CPUs that you have. (I
> would probably l
On Sun, Aug 16, 2020 at 1:16 AM Alan Altmark
wrote:
> On Saturday, 08/15/2020 at 02:25 GMT, Grzegorz Powiedziuk
> wrote:
> > Thank you for verification! If timestamps are correct then this step
> > literally takes a very brief moment. So I suspect that that final memory
>
On Sun, Aug 16, 2020 at 1:10 AM Alan Altmark
wrote:
>
> We chose 10 seconds as the default because longer than that tends to cause
> applications to get upset, as you have discovered. You said you were
> using virtual CTCs, so that means you're in the same LPAR, not just same
> CPC.
>
Apologize
On Fri, Aug 14, 2020 at 4:45 PM Scott Rohling
wrote:
> One key question is whether lpars are on same cec or different ones...
> virtual ctcs or "real"?
>
> Scott Rohling
>
They are on the same CEC. Virtual ctcs
--
For LINUX-390
On Sat, Aug 15, 2020 at 5:00 AM Alan Altmark
wrote:
>
> Are you using the IMMEDIATE option on VMRELOCATE? I ask because the
> default MAXQUIESCE on the VMRELOCATE without IMMEDIATE is 10 seconds. With
> IMMEDIATE.
>
> Forgot to mention - I have to specify longer MAXQUIESCE because the
default 10
Hello,
>From your experience, during the relocation from one LPAR to another, how
long on average the quiescence period is (no network, no nothing)?
I understand that it depends on many factors, but I am just asking for some
examples.
>From my understanding the quiescence is one of the last steps,
On Wed, Aug 5, 2020 at 2:17 AM Timothy Sipples wrote:
>
> So have you tried a JDBC driver for Sybase ASE, such as jConnect (filename
> probably jconn4.jar), jTDS, or possibly Progress Software's? For example,
> jConnect is included with SAP's SDK for ASE, and the driver itself is a
> single
Hello,
Does anyone have any experience with Sysbase ASE and zLinux?
We run Sysbase database on some other architecture but we have a db2
instance on zLinux which needs to be able to communicate with Sysbase via
this driver. This driver is not available in db2 federation.
I apologize if I am mixing
> But if I want device 2000 to become eth0 and it happened to be eth0 then
> it will fail because 3000 is using already eth0 name ...
>
> Sorry, I had a typo which turned above into a complete nonsense
I meant of course that it it happened to be eth1 after kernel discovery and
I want it to be renam
Hello everyone!
I am trying to find out if there is a way to force which specific qeth
virtual nic becomes eth0 and which eth1 in a reliable way. I am having this
problem with redhat 7.5 but I believe this is a problem with all systemd
distributions. I don't remember having these problems in the pa
2018-01-29 13:47 GMT-05:00 Mark Post :
> >>> On 1/28/2018 at 09:51 PM, Csaba Polgar
> wrote:
> > Hello,
> >
> > I'm newbie on this forum, but I would like to ask your help. (Sorry, if
> I
> > brake any protocol/usage guideline.)
> > Could someone please help to solve the below issue?
> >
> -sni
mmand?
2017-09-07 15:11 GMT-04:00 Greg Preddy :
> Yes we use LVM except on /boot. Not clear what needs to be changed,
> /etc/multipath.conf on the new LUN?
>
>
> On 9/7/2017 10:31 AM, Grzegorz Powiedziuk wrote:
>
>> Hi
>> What do you mean it still mounts a gold L
Hi
What do you mean it still mounts a gold LUN? You boot from from a NEW Lun
but root filesystem ends up beeing mounted from GOLD Lun?
First of I all I would make sure that GOLD lun after clonning is not
accesible in virtual machine anymore. Just to make it simple.
I can't remember how it is done
>
> Redhat support found a reason - a bug it glibc which was fixed just a
> couple of weeks ago
>
>
It has been fixed in glibc-2.12-1.209.el6_9.1
Thank you for your suggestions
regards
Gregory
--
For LINUX-390 subscribe / signoff
Redhat support found a reason - a bug it glibc which was fixed just a
couple of weeks ago
2017-04-19 21:15 GMT-04:00 Grzegorz Powiedziuk :
> Reboot didn't resolve the issue. I will have to open a ticket with redhat.
> hopefully they can figure this out
> Gregory
>
> 2017-0
Reboot didn't resolve the issue. I will have to open a ticket with redhat.
hopefully they can figure this out
Gregory
2017-04-18 23:31 GMT-04:00 Grzegorz Powiedziuk :
> 2017-04-18 16:34 GMT-04:00 Alan Altmark :
>
>> On Monday, 04/17/2017 at 03:14 GMT, Grzegorz Powiedziuk
>
2017-04-18 16:34 GMT-04:00 Alan Altmark :
> On Monday, 04/17/2017 at 03:14 GMT, Grzegorz Powiedziuk
> wrote:
> > I am having a really weird issue on one of the z redhat systems.
> Probably
> > it doesn't have anything to do with Z but we have some great minds here
>
2017-04-18 17:13 GMT-04:00 Scott Rohling :
> You mention nfs - so - does 'df -hl' also present the error? The 'l'
> limits it to local filesystems so seems an easy check to see if it's
> related to nfs..
>
> Scott Rohling
>
>
Good idea but unfortunately same thing happens. "df" works but "d
he error
> regardless.. Like I said - grasping..
>
> Scott Rohling
>
> On Mon, Apr 17, 2017 at 8:12 AM, Grzegorz Powiedziuk <
> gpowiedz...@gmail.com>
> wrote:
>
> > I am having a really weird issue on one of the z redhat systems. Probably
> > it does
I am having a really weird issue on one of the z redhat systems. Probably
it doesn't have anything to do with Z but we have some great minds here so
perhaps someone will help me
the "df -h" or "df -P" command doesn't work when run as a normal user.
"df" on it's own works fine.
Error:
df: cannot
We have lvroots on all our systems, in the past we had root without lvm and
honestly in both scenarios there always was a way to get to the data in
case of problems of course if all devices were available.
But it is always good to have unique vgnames (we do hostname_vgroot for
example).
LVM actua
sure
But I still recommend doing different levels of swap.
I always set 3 devices with different priorities
highest - vdisk (just a couple of hundreds megs for tiny, occasional
swapping)
medium - dasd (few gigs mdisk for real swapping if something happens and
vdisk is not enough)
low - fcp ( h
2016-07-05 13:17 GMT-04:00 Mark Post :
>
> If you don't have a support agreement and can't get a fix that way, you
> can revert the update to lvm2:
> zypper in --oldpackage lvm2-${version}
> where ${version} is the prior version you had installed.
>
>
> Mark Post
>
>
And if your system is alr
>From what Alan and Mark said, I understand that not working ssh might have
been just a small result of bigger problem - data corruption. So
practically anything else might go wrong too.
Gregory
2016-06-29 14:01 GMT-04:00 Duerbusch, Tom :
> I didn't want to hijack the original thread so
>
> T
groet/With kind regards/Mit freundlichen Grüßen,
> Berry van Sleeuwen
>
> -Original Message-
> From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
> Mark Post
> Sent: Friday, May 27, 2016 7:29 PM
> To: LINUX-390@VM.MARIST.EDU
> Subject: Re: Unable to login w
2016-05-27 8:57 GMT-04:00 Grzegorz Powiedziuk :
> One other thing you could try (saved me many times) but a bit trouble some
> is doing some stracing.
>
> 1. ssh to the user@server and let it sit on the login
> 2. on the server, do ps auxwww |grep sshd and look for a new sp
system and rights are correct.
>
> Met vriendelijke groet/With kind regards/Mit freundlichen Grüßen,
> Berry van Sleeuwen
>
>
> -Original Message-
> From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
> Grzegorz Powiedziuk
> Sent: Thursday, Ma
rds/Mit freundlichen Grüßen,
> Berry van Sleeuwen
>
>
> -Original Message-
> From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
> Grzegorz Powiedziuk
> Sent: Thursday, May 26, 2016 3:45 PM
> To: LINUX-390@VM.MARIST.EDU
> Subject: Re: Unable to
long shot but, does below do anything?
ssh -t user@x.x.x.x bash -ix
Besides that,
All filesystems are RW and they are not out of space?
does home directory have proper rights?
You probably would see errors in /var/log/messeges but better double check
Gregory
2016-05-26 7:45 GMT-04:00 van Slee
2016-05-05 9:11 GMT-04:00 Grzegorz Powiedziuk :
>
>
> I just would like to mention about MobaXterm which is one of "my best
> discoveries" during last few years when it comes to software (personal
> edition is free)
> It is a terminal application like putty but it has
2016-05-04 11:31 GMT-04:00 Frank Wolfe :
> Good day all
>
> Has anyone setup x-11 on SLES for Linux on z? Can it be done?
>
> Have a good day
>
> Fank
>
>
I just would like to mention about MobaXterm which is one of "my best
discoveries" during last few years when it comes to software (personal
e
2016-04-21 16:29 GMT-04:00 Mark Post :
> >>> On 4/21/2016 at 03:38 PM, Grzegorz Powiedziuk
> wrote:
> -snip-
> > I believe Mark said that having linux to handle vlan tagging is hard.
> >
> > But what you are trying to do is different. In your case, vswitch i
ince this is a new install I'll just go back to step one and start with
> > reinstalling..
> > I'll let you know how it works out.
> >
> > On Thu, Apr 21, 2016 at 11:08 AM, Robert J Brenneman >
> > wrote:
> >
> >> On Thu, Apr 21, 2016 at 2:00
2016-04-21 14:52 GMT-04:00 Dave Myers :
> Since Mark has told us that what we're attempting to do is not supported
> by the RAM system...I'll close this thread and thank you all for your
> feedback.
>
> I do have one last question for Alan.
>
> In this statement does the VLAN AWARE specify TRUNKIN
2016-04-21 13:39 GMT-04:00 Tom Huegel :
> Oh well I must have done something wrong, it won't boot (IPL) now.
> Booting default
> (grub2)
>
>
>
> [ OK ] Found device
> /dev/disk/by-uuid/f75ec84d-5640-4a2c-bced-e026dd7ec2b9.
>
>
> Warning: /dev/disk/by-uuid/2103a597-f950-4b63-931e-675d2c52dbd
2016-04-21 13:27 GMT-04:00 Robert J Brenneman :
>
> That's part of what the new btrfs in SLES 12 does for you. It does
> management of multiple physical block devices as a single logical entity,
> as well as talking that single logical entity and using it to back multiple
> mount points ( now call
I am not sure about "PVS" but "FREE" will work
You want to extend the LV so it should be rather something like this:
lvextend -l +100%FREE /dev/system/root(or /dev/mapper/system-root)
(/dev/system is a Volume group which from I can see has been already
extended - it has 7GB free )
Of course
Offer Baruch
> wrote:
>
> > Try adding an extra / at the beginning of the path:
> > ftp://root:pass4root@172.17.51.126//var/ftp/linins/
> >
> > That is a common issue as well...
> >
> > Offer
> > On Mar 25, 2016 10:18 PM, "Grzegorz Powiedziuk"
to the given directory
> [7.468632] dracut-initqueue[665]: Warning: Downloading '
> ftp://root:pass4root@172.17.51.126/var/ftp/linins/LiveOS/squashfs.img' f
> ailed!
>
>
> On Fri, Mar 25, 2016 at 10:05 AM, Grzegorz Powiedziuk <
> gpowiedz...@gmail.com
>
update,
And your ins.repo should be pointing to that directory where iso is mounted
on ftp so:
ftp://./linins/ not to the iso image.
Gregory
2016-03-25 13:02 GMT-04:00 Grzegorz Powiedziuk :
> the ISO image have to be mounted with a loop back device for example
> mount -o loop /dow
the ISO image have to be mounted with a loop back device for example
mount -o loop /downloads/rhel-server-7.2-s390x-dvd.iso /var/ftp/linins/
And then you ftp into it so you can see actual content of iso image
Gregory
2016-03-25 12:57 GMT-04:00 Tom Huegel :
> Background:
> I have FEDORA F23 runn
In fedora21 (at least on x86) they switched to journualctl with logs and
stuff no longer goes to regular log files.
I am not sure with s390 fedora they did the same thing.
Try something like
journalctl -u sshd --since=yesterday | tail -100
I would also try to login from a different linux machine
Is it only telnet acting like this? What about ping, netcat (nc)? Does it
respond promptly?
usually delays with logins (ssh but I think telnet does the same thing) I
have caused by messed up DNS and reverse lookup entries. But here it is
different because it works fine after first try.
I think th
Hello,
I am trying to capture performance data with cp3kvmxt and I am having
trouble to get anything more than CPU utilization.
The person who imports the EDF file says that his tool can't see storage
configuration for other LPARs and that it should. He can see storage
utilization only for a local
Hi,
When I run hyptop I can see performance stats for virtual machines running
in the same z/VM LPAR.
Is it possible to see stats for virtual machines in other z/vm lpars (I
assume that the answer is "no" when I think about but I want to make sure).
At least I should be able to see stats for othe
sage ----
> Subject: Re: hipersockets
> From: Grzegorz Powiedziuk
> Date: Fri, November 20, 2015 8:47 am
> To: LINUX-390@VM.MARIST.EDU
>
> Thanks Alan.
> HiperSocket VSWITCH Bridge will not help when it comes to isolation,
> right? Vswitch simply acts as a bridge for hi
network
but doesn't give more control on who can talk to who inside of CEC, does it?
thanks
Gregory
2015-11-20 0:47 GMT-05:00 Alan Altmark :
> On Thursday, 11/19/2015 at 08:35 GMT, Grzegorz Powiedziuk
> wrote:
> > I thought about doing vswitch but then AFIK I would end up with
either.
> David Kreuter
>
>
>
> Original Message
> Subject: Re: hipersockets
> From: Alan Altmark
> Date: Thu, November 19, 2015 3:05 pm
> To: LINUX-390@VM.MARIST.EDU
>
> On Thursday, 11/19/2015 at 07:38 GMT, Grzegorz Powiedziuk
> wrote:
> > From wha
arate chpids
then.
Thank you
Gregory
2015-11-19 15:05 GMT-05:00 Alan Altmark :
> On Thursday, 11/19/2015 at 07:38 GMT, Grzegorz Powiedziuk
> wrote:
> > From what I've learned so far, In order to achieve this, we need to have
> a
> > shared chpid between LPARS. Hip
I am planning to use hipersockets for internal communication between oracle
nodes in each RAC cluster (oracle nodes run in different lpars).
I've never used real hipersockets before so I am no sure if I understand
this correctly.
>From what I've learned so far, In order to achieve this, we need to
If you can't do what Alan said, you can do ddr from z/vm or dd in linux
which have access to both - old and new storage (the old linux should be
down during the clone process)
There are good chances that it will ipl fine from new storage.
As Mark mentioned, it might depend how did you set it in
I would like also to mention that when it comes to LVM, it makes much more
easier to manage such systems especially with FCP involved.
Imagine that you break your multipath config for example and you lose your
“mpath” names. If you have LVM, you can still boot. LVM will just scan all your
paths,
It’s a long shot but was the disk purged or you reused an old disk with some
leftovers on it?
I’ve seen weird python errors similar to these ones (unfortunately I didn’t
keep traces to compare) in some linux distribution during the installation if I
had a “dirty disk”.
And zKVM seems to be just
It’s a long shot but was the disk purged or you reused an old disk with some
leftovers on it?
I’ve seen weird python errors similar to these ones (unfortunately I didn’t
keep traces to compare) in some linux distribution during the installation if I
had a “dirty disk”.
And zKVM seems to be just
> On Oct 3, 2015, at 1:08 PM, Grzegorz Powiedziuk wrote:
>
>>
>> SUSE subscriptions are for a product line, not a particular version, unless
>> that version is out of support. So, if you have a valid subscription to any
>> SUSE Linux Enterprise Server for S
>
> SUSE subscriptions are for a product line, not a particular version, unless
> that version is out of support. So, if you have a valid subscription to any
> SUSE Linux Enterprise Server for System z, then you have a valid subscription
> for SLES12. Assuming the subscription was a "standard
> I did more playing around and I found out that that LVM source I’ve
> downloaded is working fine out from box. These changes I made to the source
> code were not necessary.
> SLES version of LVM has to have some changes.
>
>
> So I’ve checked what was installed with latest update for LVM an
> On Oct 2, 2015, at 10:38 PM, Grzegorz Powiedziuk
> wrote:
>
>>
>> On Oct 2, 2015, at 8:15 PM, Mark Post wrote:
>>
>>>>> On 9/30/2015 at 10:59 PM, Grzegorz Powiedziuk
>>>>> wrote:
>>> I think I might have found a sma
> On Oct 2, 2015, at 8:15 PM, Mark Post wrote:
>
>>>> On 9/30/2015 at 10:59 PM, Grzegorz Powiedziuk
>>>> wrote:
>> I think I might have found a small bug in latest update for SLES12 so this
>> is just a FYI for everyone who made the same mistake I
Thank you Rick for your input.
Here are some more experiments
>
> For FBA (including EDEV and SAN), use 'fdisk'.
> (And forgive me for repeating some details that you already know.)
> In my experience, the partition logic sees a default partition even when
> one was not explicitly created.
> I fou
I think I might have found a small bug in latest update for SLES12 so this is
just a FYI for everyone who made the same mistake I did.
If you use edevices, you know that the FBA driver in linux automagically (like
Mark explained it to me few years ago ;) ) creates a device “1” (dasda1 for
e
Hi, I am not sure if I understand the offer for KVM from IBM.
I know that it is available as a preview in SLES12
But what is:
- 5648-KVM KVM for IBM z Systems V1.1
As far as I can tell, it is something that can be ordered from IBM catalog. But
what is it? Did IBM came out with their own linux di
1st level host it
takes fractures of a second. On the KVM virtual machine it takes >1min
Best regards
Gregory P
> On Sep 23, 2015, at 6:42 PM, Viktor Mihajlovski
> wrote:
>
> On 23.09.2015 15:32, Grzegorz Powiedziuk wrote:
>> BTW, I was playing with KVM few days ag
e you are experiencing.
>
> On 9/23/15, 3:32 PM, "Linux on 390 Port on behalf of Grzegorz Powiedziuk"
> wrote:
>
> >BTW, I was playing with KVM few days ago and it looks pretty awesome in
> >terms of maintaining the environment and deploying new VMs but the
> &
BTW, I was playing with KVM few days ago and it looks pretty awesome in terms
of maintaining the environment and deploying new VMs but the performance for me
was really bad.
And I mean extremely bad. I am not sure if it was because I made the KVM host
(sles12) run as a virtual machine in z/VM or
on this list, there are many many different target WWPNS. Is it possible that
these are what your linux guests can actually see at the moment?
If that’s the case then your zonning does allow to see all of these despite of
what you have said.
Otherwise where linux would get these wwwpns from?
G
> On Aug 19, 2015, at 11:18 PM, Cohen, Sam wrote:
>
> Gregory,
>
> It is, of course, more art than science. In my case, I've done the following:
>
> My SYSTEM CONFIG file has EQID FCP6000 for addresses 6000 and 6100, EQID
> FCP6001 for addresses 6001 and 6101, etc. The SAN team has zoned the
> On Aug 20, 2015, at 9:23 AM, Alan Altmark wrote:
>
> The constant in this discussion is that FCP subchannels (device numbers)
> with the same EQID are defined to have the same access rights, without
> regard to the chpid. This means they are in the same SAN zone and are
> masked to the sa
> On Aug 18, 2015, at 12:00 PM, Alan Altmark wrote:
>
> On Tuesday, 08/18/2015 at 08:50 EDT, Grzegorz Powiedziuk
> wrote:
>
>> Got it! Thank you so much for spending time on explanation. That
> definitely
>> helps.
>
> You're welcome.
>
>&g
> On Aug 17, 2015, at 4:57 PM, Alan Altmark wrote:
>
> On Monday, 08/17/2015 at 03:04 EDT, Grzegorz Powiedziuk
> wrote:
>>> On Aug 17, 2015, at 11:10 AM, Alan Altmark
> wrote:
>>>
>>> The limit of 32 is on the number of active NPIV subchannels, not
> On Aug 17, 2015, at 11:10 AM, Alan Altmark wrote:
>
> On Monday, 08/17/2015 at 10:33 EDT, Grzegorz Powiedziuk
> wrote:
>> If that?s is the case ?.. why power7 and power8 officially can have up
> to 64
>> nodes per channel!? (That?s what I was told by AIX admins
Hi!
I have been told a long time ago that there was a limit of number of wwpns one
may/should have per FCP channel.
And it was “32”.
Many times I’ve tried to find more information on this and what I found is:
- it’s not a hard limit rather a rule
- it’s not mainframe's thing but rather fabri
ing DASD to a Debian guest
>
> On Tue, 11 Aug 2015 12:27:08 -0400 (EDT), Grzegorz Powiedziuk wrote:
>>
>> Make sure that when you restart linux, these dasd will automatically
>> show up in /proc/dasd/devices. Stephen suggested over here creating
>> these empty files
online and do the low level format and am able to
> see the devices in /proc/dasd/devices... But, I could use more detail after
> that.
>
> Thanks for any help you can provide.
>
> HH
> -Original Message-
> From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU]
in debian as far as I remember it was just a matter of adding a new dasd to
zipl.conf , running zipl and that’s it.
Gregory Powiedziuk
> On Aug 6, 2015, at 3:17 PM, Mark Post wrote:
>
On 8/6/2015 at 03:04 PM, Cameron Seay wrote:
>> I have attached 3 mod-9s to a guest where Debian is t
you have to know that at this point you are also rewriting cylinder 0 of
this DASD (if it is really attached) so it’s label will change.
Let us know if you need more details
Grzegorz Powiedziuk
> On Aug 6, 2015, at 3:04 PM, Cameron Seay wrote:
>
> of course Debian can't see
t VNC working to get the GUI into the
> install screens, but now the problem is when I click on the option to setup
> my partitions manually, I get a box that comes up and says my connection
> was gracefully closed and everything dies. Has anyone ran into this issue?
> >>
> &g
2015-07-17 9:55 GMT-04:00 Beard, Rick (Atos) :
> Gregory,
>
> Looks like your using the kick start method to install. I just load the
> install into memory then SSH into the new image and issue install at the
> logon which then allows me to pick the language and then point to the NFS
> where the
:33 EDT, Grzegorz Powiedziuk
> wrote:
> > I've installed dozens of rhel70 and rhel71
> > here are my templates fot 71 (I am using my own homegrown web interface
> for
> > auto and easy virtual machines creation and rhel installation without
> even
> > touching 3
I've installed dozens of rhel70 and rhel71
here are my templates fot 71 (I am using my own homegrown web interface for
auto and easy virtual machines creation and rhel installation without even
touching 3270 )
conf file template:
HOSTNAME="@@@hostname@@@"
DASD="200"
NETTYPE="qeth"
SUBCHANNELS="0.0
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