View Issue Details
|ID||Project||Category||View Status||Date Submitted||Last Update|
|0003565||Rocky-Linux-8||kernel||public||2023-06-09 06:57||2023-09-01 17:57|
|Reporter||Wessel Sandkuijl||Assigned To|
|Summary||0003565: KVM live migrate of Rocky Linux 8.8 VM crashes/reboots VM|
|Description||I've updated a few VM's from Rocky Linux 8.7 to 8.8. Live migrating these 8.8 VM's now causes a reboot of the VM instead of a regular live migrate. This issue doesn't happen with Rocky Linux 8.7.|
I'm using XCP-ng as virtualisation platform. The team of XCP-ng is able to replicate this issue. I've tried updating the xe-tools to the latest version available on github (7.20.2-1), this didn't solve the issue.
I've done some testing and it looks to be kernel related. The stock Rocky Linux 8.8 kernel (4.18.0-477.13.1.el8_8.x86_64) causes the reboot to happen. Upgrading the kernel to kernel-lt (5.4.245-1.1.el8.elrepo.x86_64) allows the VM to be live-migrated again without reboot/crash.
|Steps To Reproduce||Install VM with stock Rocky Linux 8.8 on XCP-ng, live migrate this VM.|
|Tags||No tags attached.|
|Apologies for the mistake in the title. KVM should be Xen.|
|To give a quick update, apparently this is caused by a missing patch in kernel versions starting with 4.18.0-466.el8. The very competent folks at XCP-ng figured this out: https://xcp-ng.org/forum/topic/7420/live-migrate-of-rocky-linux-8-8-vm-crashes-reboots-vm/12.|
|I can confirm that we also face this issue at my institution, using XCP-ng as the hypervisor. Is there any prospect on when the patch will be ported into Rocky? As the above link shows, the necessary patch is in 4.18.0-488|
The bugzilla that notes this fix for -488 (in stream) as noted in the changelog is here: https://bugzilla.redhat.com/show_bug.cgi?id=2187810 - However it is set to private, so it is unclear when it will make it downstream to us.
We do not generally make own backports to these. We will need to wait this week or next for the patch to become available from Red Hat.
Problem still persist with the latest Citrix HyperVisor 8.2CU1 patchlevel XS82ECU1045!
Rocky Linux 8.8 latest version
Linux ... 4.18.0-477.15.1.el8_8.x86_64 #1 SMP Wed Jun 28 15:04:18 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
|4.18.0-477.15.1.el8_8 is not the latest kernel. Please update to 4.18.0-477.21.1.el8_8.|
Installed the latest updates, latest kernel
Linux srv-mon-060 4.18.0-477.21.1.el8_8.x86_64 #1 SMP Tue Aug 8 21:30:09 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
but after migration still a probable problem (no reboot)
-> see attached screenshot
Assuming the fix will be in el8.9, a temporary solution may be to use elrepo's kernel-lt (or kernel-ml) as the submitter indicated.
dnf install https://www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm
dnf --enablerepo=elrepo-kernel install kernel-lt
|2023-06-09 06:57||Wessel Sandkuijl||New Issue|
|2023-06-09 08:19||Wessel Sandkuijl||Note Added: 0003796|
|2023-06-10 07:16||Wessel Sandkuijl||Note Added: 0003829|
|2023-07-03 18:12||Jamie Schnaitter||Note Added: 0003961|
|2023-07-04 04:56||Louis Abel||Note Added: 0003994|
|2023-08-09 16:49||Raf van de Vreugde||Note Added: 0004291|
|2023-08-09 16:50||Louis Abel||Note Added: 0004292|
|2023-08-09 17:35||Raf van de Vreugde||Note Added: 0004293|
|2023-08-09 17:35||Raf van de Vreugde||File Added: image.png|
|2023-09-01 17:57||Akemi Yagi||Note Added: 0004490|