[pve-devel] move disk to LVM

Michael Rasmussen mir at datanom.net
Wed Feb 15 22:43:09 CET 2017


Hi all,

Moving a disk to a LVM storage always outputs this in the log at the
begin:
create full clone of drive scsi0 (omnios_nfs:139/vm-139-disk-1.raw)
WARNING: dos signature detected on /dev/qnap_vg/vm-139-disk-1 at offset 510. Wipe it? [y/n]: n
Aborted wiping of dos.
Logical volume "vm-139-disk-1" created.
1 existing signature left on the device.
drive mirror is starting for drive-scsi0

According to this Redhat bugzilla the safest thing to do should be to
answer y to wipe signature or else you could end up with and unusual
disk: https://bugzilla.redhat.com/show_bug.cgi?id=1056452

Occasionally I see an unbootable disk as a result of moving an online
disk to LVM. In the client you will see segfaults trying to run simple
commands or complains about a disk in read-only mode. Stopping the VM
and trying to reboot fails since seabios complains that no bootable
disk was found.

Anyone experiencing the same?
Should a make a bug report?

-- 
Hilsen/Regards
Michael Rasmussen

Get my public GnuPG keys:
michael <at> rasmussen <dot> cc
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xD3C9A00E
mir <at> datanom <dot> net
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE501F51C
mir <at> miras <dot> org
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--------------------------------------------------------------
/usr/games/fortune -es says:
Debian Hint #4: You can see the available and installed versions for one
or more available packages with the command 'apt-cache policy
<packages>'.
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