Re: Using SMC-D in my Linux SVMs
Hi Rob, Sorry for the late reply! Correct, with a z14 you can use SMC-Dv1 only. However, Clefos 7.9 is based (or identical to) RHEL 7.9 - which doesn't have SMC support at all! :O To our credit, we did try to backport SMC to RHEL 7.x, but the kernel was just too old, and the dependencies in the code were piling up way too fast. So if if you want to stick with ClefOS/RHEL, you'd need a 8.x release! As for the smc-tools release, I'd suggest to stick with whatever version your distro provides. This is because most of the new features that a new smc-tools release brings require kernel changes - which usually won't be there, or we would have provided a more recent smc-tools version in the distro. As for live guest relocation, as far as I know that plain won't work at all as long as there's a PCI function attached to the guest. So you'd have to detach the PCI function first, which would terminate any connection right away. Of course, once migrated, you could start over (attach a PCI function, create new connections, etc.), and that should work just fine. Best regards, Stefan Raspl On 12/16/21 20:56, Hamilton, Robert wrote: Thanks, Stefan! Just installed Clefos 7.9.2009, did some yum updates, and uname says 3.10.0-1160.36.2.el7.s390x. We are on a z14 ZR1, so I'm thinking only SMC-Dv1 for us. And it works well among my z/OS systems. I've found 5 or more releases of smc-tools out in the wild, the most recent appears to be 1.7.0, which you released two months ago. Can't quite figure out what or how to download, and the docs you recommended point to a 1.2.1-level release. Found I can't VMRELOCATE a Linux system that has a pcifunction attached. Does the SMC and/or IP know while a socket is open that it has lost the pcifunction and automatically revert to normal HiperSockets (or other IP) communication? And after the VMRELOCATE completes, if a pcifunction is attached, can it restart using SMC-D? R; Rob Hamilton Infrastructure Engineer Chemical Abstracts Service -Original Message- On 12/15/21 17:52, Hamilton, Robert wrote: I have a newly-created ClefOS server on my z/VM system. I have attached HiperSockets devices for each of my (5) HiperSockets networks. They are all configured, and I can talk to each of my z/OS systems over the appropriate HiperSockets networks. I want to ensure that my client can use SMC-D when talking with the z/OS applications on the same CPC. The z/OS systems already talk with each other over HiperSockets using SMC-D, so I already have PCIFs setup in the IODF, and can attach appropriate PCIFs to my new server. Then what? I see I don't have smc-tools on the system anywhere, so I need to get that and somehow make those available. I don't see my customer as wanting to use AF-SMC-type socket connections, so I'm guessing I need to run his application with smc-run...or...??? Presumably it's the same using SMC-D over OSAs, but I'll configure that bridge when I come to it. If you can tell me what I need next, or point me to the appropriate documentation, I'd be most very grateful. Hi Rob, Yes, you can use smc_run to enable existing (binary) TCP applications to use SMC-D. Which specific version of ClefOS are you on, and what are the levels of the Linux kernel and smc-tools? If you have SMC-Dv1, check http://www.vmworkshop.org/2019/present/linuxsmc.pdf, especially p21. If you already have SMC-Dv2, check the presentation at https://community.ibm.com/community/user/ibmz-and-linuxone/viewdocument/2021-07-15-boosting-tcp-networking?CommunityKey=c1293167-6d93-448e-8854-3068846d3dfe&tab=librarydocuments. But, of course, I'll be glad to answer any questions, too! Ciao, Stefan -- Mit freundlichen Grüßen / Kind regards Stefan Raspl Linux on Z --- 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: Gregor Pillen 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: Using SMC-D in my Linux SVMs
Thanks, Stefan!
Just installed Clefos 7.9.2009, did some yum updates, and uname says
3.10.0-1160.36.2.el7.s390x. We are on a z14 ZR1, so I'm thinking only SMC-Dv1
for us. And it works well among my z/OS systems.
I've found 5 or more releases of smc-tools out in the wild, the most recent
appears to be 1.7.0, which you released two months ago. Can't quite figure out
what or how to download, and the docs you recommended point to a 1.2.1-level
release.
Found I can't VMRELOCATE a Linux system that has a pcifunction attached. Does
the SMC and/or IP know while a socket is open that it has lost the pcifunction
and automatically revert to normal HiperSockets (or other IP) communication?
And after the VMRELOCATE completes, if a pcifunction is attached, can it
restart using SMC-D?
R;
Rob Hamilton
Infrastructure Engineer
Chemical Abstracts Service
-Original Message-
On 12/15/21 17:52, Hamilton, Robert wrote:
> I have a newly-created ClefOS server on my z/VM system. I have attached
> HiperSockets devices for each of my (5) HiperSockets networks. They are all
> configured, and I can talk to each of my z/OS systems over the appropriate
> HiperSockets networks.
> I want to ensure that my client can use SMC-D when talking with the z/OS
> applications on the same CPC. The z/OS systems already talk with each other
> over HiperSockets using SMC-D, so I already have PCIFs setup in the IODF, and
> can attach appropriate PCIFs to my new server.
>
> Then what? I see I don't have smc-tools on the system anywhere, so I need to
> get that and somehow make those available. I don't see my customer as wanting
> to use AF-SMC-type socket connections, so I'm guessing I need to run his
> application with smc-run...or...???
> Presumably it's the same using SMC-D over OSAs, but I'll configure that
> bridge when I come to it.
>
> If you can tell me what I need next, or point me to the appropriate
> documentation, I'd be most very grateful.
Hi Rob,
Yes, you can use smc_run to enable existing (binary) TCP applications to use
SMC-D. Which specific version of ClefOS are you on, and what are the levels of
the Linux kernel and smc-tools? If you have SMC-Dv1, check
http://www.vmworkshop.org/2019/present/linuxsmc.pdf, especially p21. If you
already have SMC-Dv2, check the presentation at
https://community.ibm.com/community/user/ibmz-and-linuxone/viewdocument/2021-07-15-boosting-tcp-networking?CommunityKey=c1293167-6d93-448e-8854-3068846d3dfe&tab=librarydocuments.
But, of course, I'll be glad to answer any questions, too!
Ciao,
Stefan
--
Mit freundlichen Grüßen / Kind regards
Stefan Raspl
Linux on Z
---
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:
Gregor Pillen
Geschäftsführung: Dirk Wittkopp
Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB
243294
Confidentiality Notice: This electronic message transmission, including any
attachment(s), may contain confidential, proprietary, or privileged information
from CAS, a division of the American Chemical Society ("ACS"). If you have
received this transmission in error, be advised that any disclosure, copying,
distribution, or use of the contents of this information is strictly
prohibited. Please destroy all copies of the message and contact the sender
immediately by either replying to this message or calling 614-447-3600.
--
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: Using SMC-D in my Linux SVMs
On 12/15/21 17:52, Hamilton, Robert wrote: I have a newly-created ClefOS server on my z/VM system. I have attached HiperSockets devices for each of my (5) HiperSockets networks. They are all configured, and I can talk to each of my z/OS systems over the appropriate HiperSockets networks. I want to ensure that my client can use SMC-D when talking with the z/OS applications on the same CPC. The z/OS systems already talk with each other over HiperSockets using SMC-D, so I already have PCIFs setup in the IODF, and can attach appropriate PCIFs to my new server. Then what? I see I don't have smc-tools on the system anywhere, so I need to get that and somehow make those available. I don't see my customer as wanting to use AF-SMC-type socket connections, so I'm guessing I need to run his application with smc-run...or...??? Presumably it's the same using SMC-D over OSAs, but I'll configure that bridge when I come to it. If you can tell me what I need next, or point me to the appropriate documentation, I'd be most very grateful. Hi Rob, Yes, you can use smc_run to enable existing (binary) TCP applications to use SMC-D. Which specific version of ClefOS are you on, and what are the levels of the Linux kernel and smc-tools? If you have SMC-Dv1, check http://www.vmworkshop.org/2019/present/linuxsmc.pdf, especially p21. If you already have SMC-Dv2, check the presentation at https://community.ibm.com/community/user/ibmz-and-linuxone/viewdocument/2021-07-15-boosting-tcp-networking?CommunityKey=c1293167-6d93-448e-8854-3068846d3dfe&tab=librarydocuments. But, of course, I'll be glad to answer any questions, too! Ciao, Stefan -- Mit freundlichen Grüßen / Kind regards Stefan Raspl Linux on Z --- 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: Gregor Pillen 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
