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Old 11-25-2009, 02:10 PM   #1
First Onlooker
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Question Can't access files in lvm partition: unknown filesystem type 'lvm2pv'


Hello

First I would like to thank those who provide and maintain this forum and accepted my registration.

I have an XP PC which used to run Fedora in a dual boot arrangement. I had it refurbished, with an extra hard drive. Now, so far, it only uses XP, but my Linux data is preserved in two partitions, one, /boot, is ext3 and easy to access, but the other is LVM and I can't yet get at it yet.

I am running Knoppix from a cd, and here is some of the output I get (it's obvious that /dev/hdc3 is what I want):

root@Knoppix:/dev# fdisk -l

Disk /dev/hda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xd30ed30e

Device Boot Start End Blocks Id System
/dev/hda1 * 1 5222 41945683+ 7 HPFS/NTFS
/dev/hda2 5223 19457 114342637+ 7 HPFS/NTFS

Disk /dev/hdc: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xe02ae02a

Device Boot Start End Blocks Id System
/dev/hdc1 * 1 7687 61745796 7 HPFS/NTFS
/dev/hdc2 7688 7700 104422+ 83 Linux
/dev/hdc3 7701 9729 16297942+ 8e Linux LVM
root@Knoppix:/dev#

root@Knoppix:/ramdisk/home/knoppix# pvscan
Couldn't find device with uuid 'hc7Q05-kB4t-aock-HbJi-kDFY-ykmt-EVzVrr'.
Couldn't find device with uuid 'hc7Q05-kB4t-aock-HbJi-kDFY-ykmt-EVzVrr'.
PV /dev/hdc3 VG VolGroup00 lvm2 [15.53 GB / 0 free]
PV unknown device VG VolGroup00 lvm2 [1.94 GB / 64.00 MB free]
Total: 2 [17.47 GB] / in use: 2 [17.47 GB] / in no VG: 0 [0 ]
root@Knoppix:/ramdisk/home/knoppix# cat /dev/VolGroup00/
cat: /dev/VolGroup00/: No such file or directory

I tried lots of approaches from suggestions on the internet, and this looked the most promising.

Any help would be greatly appreciated,

Harry (First Onlooker)

Last edited by First Onlooker; 11-25-2009 at 02:21 PM.
 
Old 11-25-2009, 02:31 PM   #2
mostlyharmless
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Did you activate your lvm? Something like:

vgchange -a y VolGroup00

(from http://tldp.org/HOWTO/LVM-HOWTO/ )
 
1 members found this post helpful.
Old 11-26-2009, 06:24 AM   #3
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Thank you

Thank you mostlyharmless for your reply. I will try that next time I use Knoppix.

Very best wishes, Harry =
 
  


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