XFS filesystem recovery from secondary superblocks

[Aaron Goulding]

Hmm.. Okay new plan. Running XFSB  and XAGF scans on /dev/md0 instead of
/dev/md1, and I'll use that to find the alignment the superblocks are
expecting, and see if I have an offset wrong somewhere when I ran the
multi-part DD onto /dev/md1. Barring this, I'll resort to xfs_irecover. I
think you've given me a lot of information to go on though, so thank you
greatly.

-Aaron


On Sun, Nov 11, 2012 at 2:39 PM, Dave Chinner <david at fromorbit.com> wrote:

> On Sat, Nov 10, 2012 at 11:08:23PM -0800, Aaron Goulding wrote:
> > As I guessed, xfs_repair didn't work. xfs_db does now load with warnings,
> > but I fear I don't know enough about that to properly use that tool. I've
> > done a search for xfs_irepair but I'm finding very little from that.
> Where
> > is that tool located? I'm understanding a full restore is very unlikely
> at
> > this point, but if I can get anything, I'll consider this project a
> success
> > and a learning experience. :)
>
> xfs_irecover:
>
> http://oss.sgi.com/archives/xfs/2008-12/msg01782.html
>
> current location:
>
> http://inai.de/projects/hxtools/
>
> You might need to hack it to recovery full files (ISTR is ignore
> files larger than a certain size), but tools lke this are your best
> bet now.
>
> Cheers,
>
> Dave.
> --
> Dave Chinner
> david at fromorbit.com
>
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