[pve-devel] move disk to LVM

[Wolfgang Bumiller]

On Wed, Feb 15, 2017 at 10:43:09PM +0100, Michael Rasmussen wrote:
> 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

This is just a warning and should not prevent you from overwriting it
after creation, so I don't see how that's related?

> 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?
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