xfs_repair 3.1.4/3.1.5: fatal error -- couldn't malloc dir2 buffer data

[Dave Chinner]

On Sat, Aug 06, 2011 at 07:54:28PM +0200, Marc Lehmann wrote:
> On Sun, Aug 07, 2011 at 12:12:41AM +1000, Dave Chinner <david at fromorbit.com> wrote:
> > > this is 3.1.5 - 3.1.4 simply segfaults. using ltrace shows this as
> > > last call to malloc:
> > > 
> > >    malloc(18446744073708732928)                                  = NULL
> > > 
> > > I think thats a bit unreasonable of xfs_repair :)
> > 
> > Can you share a metadump of the image in question?
> 
> I can, but unfortunately, it's fixed itself in the meantime:
> 
> I wanted to make a copy of the image, and mounted it read-write. I stat'ed
> all files inside (which worked) and then rsynced all files out.
> 
> Then I unmounmted it and re-ran xfs_repair
> (http://ue.tst.eu/3cbc07150eb6b69c63361937c6c3044f.txt) which got much
> farther, but failed with the same error.

Looks lke corrupt directory blocks are causing it.

> Then I re-ran xfs_repair one last time, which ran through without any "error"
> messages.
> 
> An xfs_metadata -o is here (gzipped):
> http://data.plan9.de/smoker-chroot.bin.gz

I'll have a look at it.

Cheers,

Dave.
-- 
Dave Chinner
david at fromorbit.com