[linux-lvm] Lost free PV -> error reading VG
mauelshagen at redhat.com
Thu Feb 19 10:39:07 UTC 2004
On Wed, Feb 18, 2004 at 05:07:08PM +0100, Stefan Jenkner wrote:
> Hi Folks!
> I had a vg "debian" with the pvs /dev/hda2 /dev/hda3 /dev/hda4
> I wanted to remove /dev/hda4, so i did: pvmove -v /dev/hda4
> Everything went well, so I removed /dev/hda4, but _without_ the use of:
> vgreduce debian /dev/hda4 :-(
> I also did: pvcreate /dev/hda4 , so /dev/hda4 seems to be an empty pv, and
> it does not know that it belongs
> to the vg "debian".
Must have been a "pvcreate -ff /dev/hda4" to achive the recreation,
while /dev/hda4 was a member of VG "debian" still.
> And now, I get:
> root at ttyp0[root]# vgscan
> vgscan -- reading all physical volumes (this may take a while...)
> vgscan -- ERROR "vg_read_with_pv_and_lv(): current PV" can't get data of
> volume group "debian" from physical volume(s)
> vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created
> vgscan -- WARNING: This program does not do a VGDA backup of your volume
> root at ttyp0[root]# pvscan
> pvscan -- reading all physical volumes (this may take a while...)
> pvscan -- inactive PV "/dev/hda2" is associated to unknown VG "debian" (run
> pvscan -- inactive PV "/dev/hda3" is associated to unknown VG "debian" (run
> pvscan -- inactive PV "/dev/hda4" is in no VG [23.85 GB]
> pvscan -- total: 3 [57.24 GB] / in use: 2 [33.38 GB] / in no VG: 1 [23.85
> How can I recover my vg? There are no backups :-(
/me wonders how often we mentioned to take backups of /etc/lvmconf/* yet :->
> How can I tell the vg "debian" to do not use: the empty pv /dev/hda4?
> Or, how can I tell /dev/hda4 that it belongs to the vg "debian"?
> There is no lvmconf too :-(
lvm2 tools are able to reduce VGs by missing PVs.
Fetch and build them and run "vgreduce --removemissing debian".
Afterwards continue with LVM1 (unless you want to migrate to LVM2 anyway):
# vgscan -f
# vgchange -ay
> What additional information do you need to be able to help me?
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> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
Heinz -- The LVM Guy --
*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***
Heinz Mauelshagen Red Hat, Inc.
Consulting Development Engineer Am Sonnenhang 11
Mauelshagen at RedHat.com +49 2626 141200
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