On Mon, 10 Jan 2005, Mark T. Valites wrote:
> > Make sure you're using a recent version of LVM2.
>
> I see 2.00.33 is the most current. I'm using the 2.00.24-1 package
> provided in Debian testing - is it worth compiling the latest?
I stuck with 2.00.24-1 for now, but can easily change and might if I get a
chance tomorrow at work.
> > You'll need to restore your metadata from a backup using vgcfgrestore -
> > but first you need to work out which is the correct backup to restore
> > from, then use either lvm1 or lvm2 vgcfgrestore depending which format
> > that backup is in.
I was feeling brave and booted my lvm1 kernel, did a vgcfgbackup, then
booted back into my LVM2/dev_mapper kernel and did an vgcfgrestore. I was
encouraged that pvscan and vgscan picked up my volume, but actually
attempting to mount it failed:
myth:~# vgcfgrestore -M 1 music_vg
Restored volume group music_vg
myth:~# pvscan
PV /dev/hdg is in exported VG music_vg [111.75 GB / 0 free]
PV /dev/hdf is in exported VG music_vg [111.79 GB / 0 free]
Total: 2 [223.54 GB] / in use: 2 [223.54 GB] / in no VG: 0 [0 ]
myth:~# vgscan
Reading all physical volumes. This may take a while...
Found exported volume group "music_vg" using metadata type lvm1
myth:~# mount /data/
mount: /dev/music_vg/music_lv is not a valid block device
myth:~# mount /data/
mount: /dev/music_vg/music_lv is not a valid block device
myth:~# vgimport music_vg
Volume group "music_vg" successfully imported
myth:~# grep data /etc/fstab
/dev/music_vg/music_lv /data reiserfs defaults 0 0
myth:~# vgchange -ay music_vg
device-mapper ioctl cmd 9 failed: Invalid argument
Couldn't load device 'music_vg-music_lv'.
1 logical volume(s) in volume group "music_vg" now active
myth:~# mount /data/
mount: wrong fs type, bad option, bad superblock on /dev/music_vg/music_lv,
or too many mounted file systems
(could this be the IDE device where you in fact use
ide-scsi so that sr0 or sda or so is needed?)
The last one scares me, but it's so close...!
myth:~# file /dev/mapper/music_vg-music_lv
/dev/mapper/music_vg-music_lv: block special (254/0)
myth:~# ls -l !$
ls -l /dev/mapper/music_vg-music_lv
brw------- 1 root root 254, 0 Jan 10 19:43 /dev/mapper/music_vg-music_lv
Where to now?
-Mark
--
Mark T. Valites
Unix Systems Analyst
Computing & Information Technology
SUNY Geneseo
>--))> >--))>
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