[CentOS] LVM repairing or back to regular ext3?
Plant, Dean
dean.plant at roke.co.uk
Thu Jun 29 08:03:39 UTC 2006
Paul wrote:
> Can anyone point me in the right direction for correcting errors on
> an HD when using LVM? I've tried e2fsck and indicates bad block.
> I've tried with -b 8193, 16384, and 32768 and no good.
>
> I've found some info about reiserfsck on google, but this utility
> doesn't seem to be included in Centos4.3. I did find it on my old
> FC1 box.
>
> I am thinking now I really should have went with just regular 83 Linux
> ext3 partitions. Arrgghhh.
>
> And if I want to switch to 83 Linux instead of 8e LVM, whats the best
> way, or at least a feasible way? I can pop another drive in if I
> need to move data around, but I don't see how, as I can't mount the
> LVM partition (hda2).
>
As the previous poster advised, this is probably a hardware fault but
for your reference I used the same instructions from this post to fix a
corrupt filesystem within LVM.
http://dcs.nac.uci.edu/~strombrg/EXT3-filesystem-recovery-in-LVM2.html
Use a Centos rescue disk
1) Do startup network interfaces
2) Don't try to automatically mount the filesystems - not even readonly
3) lvm vgchange --ignorelockingfailure -P -a y
4) fdisk -l, and guess which partition is which based on size: the small
one was /boot, and the large one was /
5) mkdir /mnt/boot
6) mount /dev/hda1 /mnt/boot
7) Look up the device node for the root filesystem in
/mnt/boot/grub/grub.conf
8) A first tentative step, to see if things are working: fsck -n
/dev/VolGroup00/LogVol00
9) Dive in: fsck -f -y /dev/VolGroup00/LogVol00
10) Wait a while... Be patient. Don't interrupt it
11) Reboot
Dean.
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