Re: [Xen-users] how to run fsck for a crashed domU?

[Alexander Hoßdorf <xen-users@xxxxxxxxxxx>]

ACTIVE            '/dev/sysvg/root' [2.00 GB] inherit

I guess this is your root lvm partition from the Image?

try: e2fsck /dev/sysvg/root

Cheers,
Alex



Rudi Ahlers schrieb:
> Alexander Hoßdorf wrote:
> > okay, I got it now...
> >
> > step by step...
> >
> > 1. losetup /dev/loop4  /home/vm/vm01.img
> > # This mounts the image file as imaginary physical to /dev/loop4
> >
> > 2. kpartx -va /dev/loop4
> > # This creates a device map with partitions in vm01.img in /dev/mapper
> >
> > 3. vgscan
> > # This should discover your lvm VGs from Image.
> >
> > 4. lvscan
> > # Should list the ACTIVE  volumes.
> >
> > 5. Now you can do e2fsck to the volumes listet by lvscan.
> > But be sure to e2fsck only the LVs from yout Image if you're using 
> > lvm in Dom0, too.
> > Please give feedback if this worked for you.
> >
> >
> > Cheers,
> > Alex 
> > ______________________________________________
> Awesome, thanx!!!
>
> I got as far as seeing the partitions, but can only run e2fsck on one 
> of them:
> lvscan
>  ACTIVE            '/dev/backup/pluto' [20.00 GB] inherit
>  ACTIVE            '/dev/backup/bck' [40.00 GB] inherit
>  ACTIVE            '/dev/backup/anya_zanet' [7.00 GB] inherit
>  inactive          '/dev/VolGroup00/LogVol00' [9.34 GB] inherit
>  inactive          '/dev/VolGroup00/LogVol01' [544.00 MB] inherit
>  ACTIVE            '/dev/sysvg/root' [2.00 GB] inherit
>  ACTIVE            '/dev/sysvg/usr' [8.00 GB] inherit
>  ACTIVE            '/dev/sysvg/var' [8.00 GB] inherit
>  ACTIVE            '/dev/sysvg/home' [53.38 GB] inherit
>  ACTIVE            '/dev/sysvg/tmp' [1.00 GB] inherit
>
> There's no VolGroup00 in /dev/ - but I do see /dev/mapper/loop4p1 & 
> /dev/mapper/loop4p2
> Running e2fsck on it seems ok,
>
> # e2fsck /dev/mapper/loop4p1
> e2fsck 1.39 (29-May-2006)
> /boot: clean, 45/26104 files, 22630/104388 blocks
>
>
>
> Yet, when booting up, I still get the error :(
>
> [/sbin/fsck.ext3 (1) -- /] fsck.ext3 -a /dev/VolGroup00/LogVol00
> /dev/VolGroup00/LogVol00 contains a file system with errors, check 
> forced.
> /dev/VolGroup00/LogVol00: Inode 67830 has illegal block(s).
>
> /dev/VolGroup00/LogVol00: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.
>        (i.e., without -a or -p options)
> [FAILED]
>
> *** An error occurred during the file system check.
> *** Dropping you to a shell; the system will reboot
> *** when you leave the shell.
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