Re: xfs_check problems on 3.6TB fs

[Frank Hellmann <frank@xxxxxxxxxxxxx>]

Hi Michael!

Similar effects here. Basically we have the same setup (Hardware RAID5
with Software RAID0 striped together). I ran into some problems during a
xfs_repair. See these articles:

http://marc.theaimsgroup.com/?l=linux-xfs&m=109714077512194&w=2

http://marc.theaimsgroup.com/?l=linux-xfs&m=109719162327429&w=2

Not to good news, I am afraid. We are currently working on a scheme to
cache our files into multiple directories instead of the filesystem
root. That as far as I can tell helps to avoid this issue. So you
shouldn't run into these during xfs_repair.

Concering xfs_check... anyone?

                Cheers,
                        Frank...


Michal Szymanski wrote:
> Hi,
>
> I have successfully installed XFS filesystem on a software RAID0
> /dev/md0 partition made of two sub-2TB pieces of a hardware RAID array.
> The total size is 3.6TB.
>
> The system is a Fedora Core 2, dual Xean 3.06GHz, Tyan Tiger i7501
> mobo, 2.6.7-1.494.2.2smp kernel, xfsprogs-2.6.13-1.
>
> I can mount/umount, write/read to the filesystem, no problem.
>
> I am getting into a problem when trying to check the filesystem. It
> seems a bit confusing:
>
>
> > fsck /dev/md0
> fsck 1.35 (28-Feb-2004)
>
>
> > fsck.xfs /dev/md0
> (no output at all)
>
>
> > xfs_check /dev/md0
> xfs_check: out of memory
>
> The "out of memory" message is mentioned in the xfs_check man-page, as a
> possible problem with a filesystem that is "very large (has many files)".
> Well, while in terms of total capacity my FS is indeed "very large", it
> is not (yet) in terms of "has many files"). At the moment there are just
> three directories made there and a single file (same message with no files).
>
> "xfs_repair" seems to work fine (although I only ran it on a cleanly
> unmounted FS).
>
> Any feedback would be appreciated. I am a bit reluctant to put my
> valuable data on a filesystem which can't be checked.
>
> regards, Michal.
--
--------------------------------------------------------------------------
Frank Hellmann          Optical Art GmbH           Waterloohain 7a
DI Supervisor           http://www.opticalart.de   22769 Hamburg
frank@xxxxxxxxxxxxx     Tel: ++49 40 5111051       Fax: ++49 40 43169199