Summary: fixing LVM corruption, question about LVM locking
My laptop battery went to 0%. The lid was closed but maybe the laptop
was not suspended, which was could have been the cause of an LVM
corruption which I did manage to fix with the help of numerous obscure
sources.
I'm posting the fix here since I couldnt find a description of this
exact issue anywhere else. I didn't write down the exact wording of the
errors when they happened, I hope the keywords make it clear enough. I'm
not an LVM expert so please correct any errors.
I also have a question at the end about LVM locking and Qubes which I
hope somebody can answer.
Problem description
- At boot I Enter the luks password
- Errormessages (unsure about order in which they appeared):
'dracut initqueue timeout - starting timeout scripts' > repeated 30
times
'you may have to regenerate initramfs'
'/dev/mapper/qubes_dom0-root does not exist'
- Computer enters into a dracut shell
Regenerating initramfs did NOT solve the problem. The following did:
- in the dracut shell, start lvm
- Enter command: "vgchange -ay". Response should be 'Volumegroup x
activated' or something similar
- Enter command: 'lvconvert --repair (logical volume name, in my case
qubes_dom0/pool00'
- Errormessage: 'cannot repair, lvm locking type = 4 (read only)'.
- Change lvm locking type to 1 in /etc/lvm/lvm.conf
- Retry command lvconvert --repair (logical volume name, in my case
qubes_dom0/pool00.
- After the process finishes exit the dracut shell and continue boot
process.
Questions:
- what is the standard LVM locking type for a Qubes install? (in Fedora
it is 1).
- if not 1 should I change it back?
- if 1 what caused it to be changed?
- is powerfailure the probable cause of this issue?
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