XCP vm fails to boot after newest kernel applied.
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@bberndt that's why I mentioned uefi, wondering if legacy is part of the problem. I won't have time to fiddle with this for a while, broke a couple things today that I need to fix, and need to set up glpi for some testing.
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CCing @anthonyper who is tasked with following this regression closely and letting us know about any progress.
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@Greg_E said in XCP vm fails to boot after newest kernel applied.:
@bberndt that's why I mentioned uefi, wondering if legacy is part of the problem. I won't have time to fiddle with this for a while, broke a couple things today that I need to fix, and need to set up glpi for some testing.
Made a new Rocky Linux 8 install, on a lab host. UEFI boot mode, and mostly all defaults. on XCP-ng 8.2 on a E5 2620 v0 host.
Used the guest tool from the Rocky and or EPEL repository. (added the EPEL repo and then installed xe-guest-utilities)
Does NOT boot after updating to the latest kernel. -
Is there something different about Alma? Friday I may have some time to fiddle and can try a Rocky 8 to see what happens.
Is this an 8.2 and 8.3 issue or just 8.2? I have 8.2 in production and could try there, 8.3 in my lab with a very fresh build.
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@Greg_E said in XCP vm fails to boot after newest kernel applied.:
Is there something different about Alma? Friday I may have some time to fiddle and can try a Rocky 8 to see what happens.
Is this an 8.2 and 8.3 issue or just 8.2? I have 8.2 in production and could try there, 8.3 in my lab with a very fresh build.
Migrated to a XCP-ng 8.3 host. Xeon E5-2689 v4
No change. -
If I find an hour, I'll give Rocky 8 a try.
Could you use LEAPP to migrate that to Alma, maybe they are doing something differently which is why mine are working.
I can tell you, there is nothing special that I'm doing, my systems are as vanilla as they get.
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@Greg_E said in XCP vm fails to boot after newest kernel applied.:
If I find an hour, I'll give Rocky 8 a try.
Could you use LEAPP to migrate that to Alma, maybe they are doing something differently which is why mine are working.
I can tell you, there is nothing special that I'm doing, my systems are as vanilla as they get.
@Greg_E
google AI says what I think is familiar:
Rocky Linux strives for 1:1 bug-for-bug compatibility with RHEL, while Alma Linux is more of an RHEL rebuild, making some adjustments and adding its own features -
Ok, that might explain the difference.
Would a LEAPP from Rocky 8 up to Alma 9 be possible and solve the issue?
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@Greg_E said in XCP vm fails to boot after newest kernel applied.:
@bberndt
I just installed a fresh Alma 8, did yum update to see what would happen, and it's still working. Gave out the same kernel as above.
This was installed UEFI on XCP-ng 8.3 which was a fresh install a few days ago from a nightly (near release?) ISO. It was installed to an NFS share, 2 cores and 4GB with an Intel i1000 interface. Xenserver tools 8.4.0-1 installed.
There are no extra packages installed yet, could this be a package conflict.
Anything else I can check to see why mine works and others are failing?
Hmm....I did the same and that VM died just like any other with the broken kernel.
Although I used the Cloud Image so not completly new install from scratch.
Maybe I'll check building a new cloud image what will happen then. -
How many of these that are failing have been upgraded from a previous version? Could it be something left over from EL7 or early EL8?
My Alma 8.10 base install is still running fine, did a yum update to apply a few more things and reboot and still working with the same kernel version above. But again, this was a clean fresh install, not something that's been running for a while.
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FYI, there's a patch submitted to linux-stable (6.6 and earlier) but not yet in a stable release:
https://lore.kernel.org/stable/20250411160833.12944-1-jason.andryuk@amd.com/I guess we'll have to wait until this is picked up by Linux, then Red Hat will have to pick that as well.
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@Greg_E said in XCP vm fails to boot after newest kernel applied.:
Ok, that might explain the difference.
Would a LEAPP from Rocky 8 up to Alma 9 be possible and solve the issue?
I did a (not LEAPP, but a migration script from Alama) from Rocky 8 to Alma 8, and it died. None of my Rocky 9's have had a problem so far, and of course end up with a completely different kernel.
