Comment # 21 on bug 1055641 from Neil Rickert

>OK so apparently there's something wrong with /dev/dm-0

Since I reported seeing the same sort of messages with Tumbleweed, I'll comment
here.

I use an encrypted LVM.  And "/dev/dm-0" is the access to that LVM.

Inside the LVM, I have volumes "root1", "root2", "root3", "swap", "home".

I use "ext4" for home and root.  If the root file system is the "root1" volume,
then the "home" volume is mounted at "/home".  If the root file system is
either the "root2" or "root3" volume, then the "home" volume is mounted at
"/xhome".

The shutdown messages seem to show the crypto being properly undone.  And that
happens before the "Command failed" messages show up.

If I mount the "home" volume at "/xhome", then I usually see a message
"Failed to unmount /xhome".  I have checked by booting rescue media, and that
file system shows as clean.  So I think it fails to unmount it because it has
already unmounted it, though I cannot see where.

If I have given more detail than is relevant, please ignore that extra detail.

Hmm, here's another point I should mention.  I also have Tumbleweed on a spare
partition on a laptop.  In that case, the root file system is "/dev/sda8" and
is not encrypted at all.  But I do still mount "home" from the encrypted LVM at
"/xhome" and I still use swap from the encrypted LVM.  On that system, I still
get the "Command failed" messages on shutdown.  And I still see the "failed to
unmount /xhome" (before the "Command failed").