[linux-lvm] Fwd: file-based locking initialization failed after pvresize

[Zdenek Kabelac]

Dne 31.5.2013 11:04, Gabriel Barazer napsal(a):
> Hi,
>
> Did you try booting off another system (e.g. live usb ) and restoring the LVM
> meta data ? If your root filesystem is still bootable, you can find a backup
> of the LVM metadata in /etc/lvm/backup, and then start over your data resizing
> procedure. Look for the vgcfgrestore command.
>
> The right procedure to resize a LV after growing a PV is :
> - adjust the partition table on sdb with fdisk, the simple way is deleting the
> partition table and creating a new one with the main partition having the same
> start offset (_very_ important)
> - THEN pvresize the device (no need to add any --setphysicalwhatever argument)
> - then lvresize, but if you want to be safe always check that the size you set
> is larger than the current volume size otherwise you can damage your data
> pretty bad. A good way to do this is to add a "+" in the lvresize command :
> lvresize -L +100G /device adds 100G to volume.
> - then run a filesystem resize command, depending on the filesystem used
> (xfs_growfs for XFS, resize2fs for ext4)

For couple years lvresize has the option '-r'  so it knows how to resize 
common filesystems (via fsadm script) - so it keeps the right order of 
commands (very important in case you are reducing size)

Zdenek