On Fri, 2008-01-18 at 15:01 -0500, Alain Reguera Delgado wrote:
Guys,
The other day while working on my old workstation it get frozen and after reboot I lost almost all data unexpectedly.
I have a RAID1 configuration with LVM. 2 IDE HDDs.
md0 .. store /boot (100MB)
/dev/hda2 /dev/hdd1
md1 .. store / (26GB) /dev/hda3 /dev/hdd2
The only info that still rest in was that, that I restore after the fresh install. It seems that the disk were with problems and weren't syncing :(. I confessed, I didn't check that at first time but after I lost the data and check /var/log/messages I saw that.
From /var/log/messages
... Jan 17 12:22:15 zion kernel: md: raid1 personality registered for level 1 Jan 17 12:22:15 zion kernel: device-mapper: ioctl: 4.11.0-ioctl (2006-09-14) initialised: dm-devel@redhat.com Jan 17 12:22:15 zion kernel: md: Autodetecting RAID arrays. Jan 17 12:22:15 zion kernel: md: invalid raid superblock magic on hda3 Jan 17 12:22:15 zion kernel: md: hda3 has invalid sb, not importing! Jan 17 12:22:15 zion kernel: md: autorun ... Jan 17 12:22:15 zion kernel: md: considering hdd2 ... Jan 17 12:22:15 zion kernel: md: adding hdd2 ... Jan 17 12:22:15 zion kernel: md: hdd1 has different UUID to hdd2 Jan 17 12:22:15 zion kernel: md: hda2 has different UUID to hdd2 Jan 17 12:22:15 zion kernel: md: created md1 Jan 17 12:22:15 zion kernel: md: bind<hdd2> Jan 17 12:22:15 zion kernel: md: running: <hdd2> Jan 17 12:22:15 zion mcstransd: mcstransd starting Jan 17 12:22:15 zion kernel: raid1: raid set md1 active with 1 out of 2 mirrors Jan 17 12:22:15 zion kernel: md: considering hdd1 ... Jan 17 12:22:15 zion kernel: md: adding hdd1 ... Jan 17 12:22:15 zion kernel: md: adding hda2 ... Jan 17 12:22:15 zion kernel: md: created md0 Jan 17 12:22:15 zion kernel: md: bind<hda2> Jan 17 12:22:15 zion kernel: md: bind<hdd1> Jan 17 12:22:15 zion kernel: md: running: <hdd1><hda2> Jan 17 12:22:15 zion kernel: md: kicking non-fresh hdd1 from array! Jan 17 12:22:15 zion kernel: md: unbind<hdd1> Jan 17 12:22:15 zion kernel: md: export_rdev(hdd1) Jan 17 12:22:15 zion kernel: raid1: raid set md0 active with 1 out of 2 mirrors Jan 17 12:22:15 zion kernel: md: ... autorun DONE. ...
This computer is really old, Celeron 800MHz, 256MB of RAM and IDE disk too.
I know that I have to suffer the consequences but if you know some way to recover some data, help me please.
These days I have been reading about: mdamd, and some way to recover but no success:
I tried to boot from rescue mode with CentOS 5 first CD and do an fsck to /dev/hda3 and /dev/hdd2. After this something about superblock was told to me and that use the command e2fsck -b 8123 <device> (I don't remember the number exactly) but no success either.
Do you have some idea ?
I've not used raid, but your file system is inside LVM, from what you say. You need to have LVM active and fsck on /dev/<your logical vol> for fsck to work.
Thanks guys,
Cheers, al.
<snip sig stuff>
HTH