Re: [linux-lvm] Remove VOlume group that doesn't exist

[Melinda Taylor <melinda phys unsw edu au>]

Hi Heinz,

PVSCAN reveals:

[root astro melinda]# /sbin/pvscan
 VG data differs between PVs /dev/sdd2 and /dev/sde2
 1 PV(s) found for VG vg01: expected 0
 Out of memory.  Requested 4006555252 bytes.
 Couldn't allocate logical volume maps.
 PV /dev/sdd1    is in exported VG vg02 [9.85 GB / 0    free]
 PV /dev/sde1    is in exported VG vg02 [19.54 GB / 0    free]
 Total: 2 [0   ] / in use: 2 [0   ] / in no VG: 0 [0   ]

/dev/sdd2 and /dev/sde2 have both been reformatted as ext3 fs and their 
partition type was changed to linux fs using fdisk.

The memory error I haven't seen before (we have 3GB) but I installed a 
new kernel the other week maybe that is the cause /var/log/messages said:

Sep  8 16:17:15 astro kernel: ide-scsi: hda: unsupported command in 
request queue (0)
Sep  8 16:17:15 astro kernel: end_request: I/O error, dev 03:1e (hda), 
sector 0
Sep  8 16:17:15 astro kernel: ide-scsi: hda: unsupported command in 
request queue (0)
Sep  8 16:17:15 astro kernel: end_request: I/O error, dev 03:1f (hda), 
sector 0
Sep  8 16:17:16 astro kernel: ide-scsi: hda: unsupported command in 
request queue (0)
Sep  8 16:17:16 astro kernel: end_request: I/O error, dev 03:20 (hda), 
sector 0

I don't want to do

dd if=/dev/zero of=/dev/sdd2 bs=512 

as /dev/sdd2 now has data on it.

If I look at both drives in fdisk only the parition /dev/sdd1 and /dev/sde1 which make up VG02 are set to "Linux LVM".

Is there someway to rename VG02 as VG01 maybe? I am at a loss.

Many Thanks,

melinda





Heinz J . Mauelshagen wrote:

> Melinda,
>
> Does pvscan show /dev/sdd2 as a Physical Volume ?
>
> If so, there's still LVM metadata on /dev/sdd2 in the first sector.
> In case the partition is unused (no filesystem etc.), a
>
> 	dd if=/dev/zero of=/dev/sdd2 bs=512
>
> should remove the PV.
>
> On Wed, Sep 03, 2003 at 09:07:19AM +1000, Melinda Taylor wrote:
>  
>
> > Hello,
> >
> > After my couple of disks died I have been left with one working volume 
> > group vg02 and
> > one non-existant volume group vg01 which I would like to remove.
> > Since /dev/sdd2 and /dev/sde2 no longer exist I am unable to remove the 
> > volume group with the usual method:
> >
> > /sbin/vgremove vg01
> > VG data differs between PVs /dev/sdd2 and /dev/sde2
> > Volume group "vg01" doesn't exist
> >
> >
> > Actually /dev/sdd2 does still exist as a normal formatted linux partition
> > so I don't want to damage that while trying to remove my volume group.
> >
> > How do I tell lvm that vg01 no longer exists? It is not in lvmtab so I 
> > am unsure where it store this info.
> >
> >
> > Many Thanks,
> >
> > melinda
> >
> >
> >
> > _______________________________________________
> > linux-lvm mailing list
> > linux-lvm sistina com
> > http://lists.sistina.com/mailman/listinfo/linux-lvm
> > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> >    
>
>