kvdo builds just fine with kernel 6.6 but it fails to boot with vdo root device

[beertje44]

Tried your latest version, 8.2.3.3, on ALmaLinux 9.3 with kernel 6.6.2. It seems to build just fine with dkms as did it with 6.5.
However this time it fails to boot: unknown device boot 0,0.

Was hoping I could finally test if the problems with my onboard AMD GPU were solved. But guess I'll have to wait a bit longer.

Is 6.6 supported, or is this work in progress?

[lorelei-sakai]

As far as I know VDO should work with a 6.6 kernel. If you're using it as a boot device, I know some people have seen startup races where the VDO device isn't ready yet when the system tries to use it. Without more details it's hard to say if that's what you're running into.

There are a few adjustments that we expect to have to make for a 6.7 kernel but we'll look into those more when that kernel gets finalized.

[beertje44]

You are right, the problem seems to be with dkms. kvdo builds just fine, but after that there is a problem during the "Adding weak modules" stage: it gives depmod file not found errors on modules I know are really there. Among those are the nvidia drivers and zfs drivers I also added though dkms. Not sure if this is something with the latest release of kvdo or a local setup issue.

For now I was able to boot 6.6 by rebuilding those through dkms which didn't produce these errors and running dracut after that.

Also I was unable to reproduce by just running "dnf --enablerepo=elrepo-kernel update" which installed 6.6.3 and which booted just fine. Guess it was a local setup issue.

[beertje44]

FYI: on 6.6.5 there does seem to be a race condition, it boots but then eventually dracut is unable to find the main (vdo backed) lv. 6.6.3 boots and works just fine.