Hello ,
I'm having a hard time with LVM, in my PC I have setup a VG with 4
harddisks, and one of the HDs crashed. Well, I know I should have
backed up the data,
which I did, but the backup is far too old. You know how hard it is to backup
big big HDs/partitions w/o having bunches of backup media. Anyway, I have
consulted Heinz, who was so kind pointing to LVM2, with its help it should have
been possible to mount the VG partially. What I did was:
1. upgrade my kernel, so I could use the device-mapper, which is important
for LVM2
2. installed LVM2
3. tried "vgchange -P -ay", which gave me following output:
> -----
> 3 logical volume(s) in volume group "data" now active
> Finding volume group "mpeg"
> 3 PV(s) found for VG mpeg: expected 4
> Logical volume (mp3) contains an incomplete mapping table.
> 2 logical volume(s) in volume group "mpeg" already active
> 3 PV(s) found for VG mpeg: expected 4
> Logical volume (mp3) contains an incomplete mapping table.
> Found volume group "mpeg"
> 3 PV(s) found for VG mpeg: expected 4
> Logical volume (mp3) contains an incomplete mapping table.
> Found volume group "mpeg"
> 3 PV(s) found for VG mpeg: expected 4
> Logical volume (mp3) contains an incomplete mapping table.
> Found volume group "mpeg"
> 3 PV(s) found for VG mpeg: expected 4
> Logical volume (mp3) contains an incomplete mapping table.
> Found volume group "mpeg"
> Activated logical volumes in volume group "mpeg"
> 2 logical volume(s) in volume group "mpeg" now active
> ----
>
> vgdisplay :
> Finding volume group "mpeg"
> 3 PV(s) found for VG mpeg: expected 4
> Volume group "mpeg" doesn't exist
>
> ----
even vgscan did not help:
: # LVM2.1.95.12/tools/lvm vgscan -v
Wiping cache of LVM-capable devices
Wiping internal cache
Reading all physical volumes. This may take a while...
Finding all volume groups
Finding volume group "data"
Found volume group "data" using metadata type lvm1
Finding volume group "mpeg"
3 PV(s) found for VG mpeg: expected 4
Volume group "mpeg" not found
: # mount -a
mount: special device /dev/mpeg/mp3 does not exist
mount: special device /dev/mpeg/movie does not exist
VG "data" is a VG on different SCSI-HDs (which is backed up on a reg
basis... anyway this VG was never touched, as it didnt crash).
I also remove the devnodes left by LVM 1 (/dev/mpeg/mp3 /dev/mpeg/mpvie),
but still I cant access the VG's.
What to do next? Any help is really appreciated, as there is still lots of
important data on the VGs.
Thanks
--
Regards,
nik-da-3'9''
mailto:nik39.at.gmx.dot.net@check.this.mailadress.com
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