Re: Dead device and cleaning up LVM

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Ray Van Dolson wrote:
On Mon, Feb 09, 2009 at 09:58:04AM -0800, Ray Van Dolson wrote:
On Mon, Feb 09, 2009 at 09:45:46AM -0800, Bryn M. Reeves wrote:
Ray Van Dolson wrote:
Anyone know how I can remove this device both from the system and from
LVM safely?  I can reboot, but saving that as a last resort if
possible.
You don't mention the name of your VG/LV but you should be able to remove the active lvm devices with "dmsetup remove", e.g.:

dmsetup remove $VG-$LV

For each LV in each VG that was using the iSCSI devices.
Beautiful.  This did the trick!  I can now also unload the iSCSI kernel
modules correctly on the initiator.


Also, just an FYI in case anyone else runs across this thread... to get
my filesystem back (pvscan didn't detect the LVM at all):

  # pvcreate --uuid 3HpAVg-fRz0-HWXp-EFxK-khVO-IvN6-J4a6w1 /dev/sdb

If you also specify "--restorefile=" and the path to the current metadata backup in /etc/lvm, pvcreate will ensure that the new PV can accommodate the VG you want to restore to it. It'll almost certainly always work without this if you always use the default options but by specifying --restorefile you can be completely sure.

  (Found the old UUID by examining the /etc/lvm/backup directory)
  # vgcfgrestore FTP1
  # vgchange -ay FTP1
  # fsck.ext3 /dev/FTP1/LogVol00
  # mount -a

Back in action!

Glad to hear it!

Regards,
Bryn.

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