How to mount a LogVol into Knoppix?

polemon · 08-06-2006, 03:36 PM

Hi.

I've got FC5, with the typical VolGroup00/LogVol00 partition on my SATA drive.

I'd dlike to mount that device into a Knoppix live System.

I can mount the /boot partition, but not the rest of it.

How can I do this?

I've tried looking for that on the internet, but I couldn't find anything handy for my problem.

I can scan the LVM System with the vgs and lvm commands under Knoppix, but I don't know, how to actually mount it into the running filesystem.

Please help

--polemon

WhatsHisName · 08-07-2006, 12:29 PM

It mounts just like you mounted /boot, but you may need to activate the volume group first:

Code:

# vgscan --mknodes
# vgchange -ay
# lvscan
#
# mkdir /mnt/somename
# mount /dev/VolGroup00/LogVol00 /mnt/somename

But keep in mind, only the v5... (and presumably future versions of) Knoppix natively supports lvm2, which is used in FC5.

Also, the LVM HowTo is your friend: http://www.ibiblio.org/pub/Linux/doc...LVM-HOWTO.html

polemon · 08-07-2006, 07:11 PM

I've got the latest Knoppix available.
Thanks for the help, I'll try right when I wake up tomorrow!

--polemon

polemon · 11-26-2006, 02:31 PM

O hi, I forgot to say 'thank you' it works perfectly!

satishp · 07-05-2007, 10:09 AM

Using Knoppix 5.1.1

followed the instruction
"mount /dev/VolGroup00/LogVol00 /mnt/mount_point" and it is giving me the output
"mount: you must specify the filesystem type"

I also tried using

"mount -t {ext3|ext2|reiserfs} /dev/VolGroup00/LogVol00 /mnt/mount_point" and it gives me

mount: wrong fs type, bad option, bad superblock on /dev/mapper/VolGroup00-LogVol00,
missing codepage or other error
In some cases useful info is found in syslog - try
dmesg | tail or so

This is the output of "vgscan" and "lvscan"

$lvm vgscan
Reading all physical volumes. This may take a while...
Found volume group "volGroup00" using metadata type lvm2

$lvm lvscan
ACTIVE '/dev/VolGroup00/LogVol00' [75.69 GB] inherit
ACTIVE '/dev/VolGroup00/LogVol01' [512.00 MB] inherit

Any suggestions, what i can do to mount and read LogVol00?

satishp · 07-05-2007, 10:19 AM

Adding the output of lvdisplay

PHP Code:


			
$ lvm lvdisplay

  --- Logical volume ---

  LV Name                /dev/VolGroup00/LogVol00

  VG Name                VolGroup00

  LV UUID                daCkzm-I720-LrN0-098G-Py2g-lyhB-9dv6CR

  LV Write Access        read/write

  LV Status              available

  # open                 0

  LV Size                75.69 GB

  Current LE             2422

  Segments               1

  Allocation             inherit

  Read ahead sectors     0

  Block device           254:0



  --- Logical volume ---

  LV Name                /dev/VolGroup00/LogVol01

  VG Name                VolGroup00

  LV UUID                1lEmze-vHPh-amfz-pvW0-wm7c-T4Jo-QKZkeJ

  LV Write Access        read/write

  LV Status              available

  # open                 0

  LV Size                512.00 MB

  Current LE             16

  Segments               1

  Allocation             inherit

  Read ahead sectors     0

  Block device           254:1

and dmesg

PHP Code:


			
ReiserFS: dm-0: warning: sh-2021: reiserfs_fill_super: can not find reiserfs on dm-0

hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }

hda: dma_intr: error=0x40 { UncorrectableError }, LBAsect=209261, sector=209229

ide: failed opcode was: unknown

end_request: I/O error, dev hda, sector 209229

Buffer I/O error on device dm-0, logical block 0

hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }

hda: dma_intr: error=0x40 { UncorrectableError }, LBAsect=209261, sector=209237

ide: failed opcode was: unknown

end_request: I/O error, dev hda, sector 209237

Buffer I/O error on device dm-0, logical block 1

hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }

hda: dma_intr: error=0x40 { UncorrectableError }, LBAsect=209261, sector=209245

ide: failed opcode was: unknown

end_request: I/O error, dev hda, sector 209245

Buffer I/O error on device dm-0, logical block 2

hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }

hda: dma_intr: error=0x40 { UncorrectableError }, LBAsect=209261, sector=209253

ide: failed opcode was: unknown

end_request: I/O error, dev hda, sector 209253

Buffer I/O error on device dm-0, logical block 3

hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }

hda: dma_intr: error=0x40 { UncorrectableError }, LBAsect=209261, sector=209261

ide: failed opcode was: unknown

end_request: I/O error, dev hda, sector 209261

Buffer I/O error on device dm-0, logical block 4

ReiserFS: dm-0: warning: sh-2021: reiserfs_fill_super: can not find reiserfs on dm-0