Bug#782793: systemd: ext4 filesystem on lvm on raid causes boot to enter emergency shell

[Rick Thomas]

On Apr 17, 2015, at 3:44 PM, Michael Biebl <biebl at debian.org> wrote:
> 
> Thanks for the data.
> Looks like an lvm issue to me:
> 
> root at cube:~# lvscan
>  inactive          '/dev/vg1/backup' [87.29 GiB] inherit
> 
> and as a result, /dev/disk/by-label/BACKUP is missing.

Yes, that’s true, of course.  But the question is, what is keeping lvm from activating the volume?

It works fine for a logical volume on a single physical disk.  And /proc/mdstat shows that the RAID device, /dev/md127, _is_ active.  Or, at least it is when we get to emergency mode… I don’t know if it’s active when the fsck times out, of course… If you know how to figure that out from the systemd journal I attached to the original bug report, or any other way that I can try, I’d appreciate any assistance you can give!

Thanks!
Rick

PS: In the meantime, can you do whatever magic is involved with passing this on the the LVM2 maintainers?  Thanks!