Date: Tue, 4 Oct 2011 19:57:28 +1030 From: Matt Thyer <matt.thyer@gmail.com> To: Paul Mather <paul@gromit.dlib.vt.edu> Cc: freebsd-current@freebsd.org Subject: Re: Strange ZFS filesystem corruption Message-ID: <CACM2%2B-6JC_rGR5HP4LbyZasF_66W%2BsUZSF=%2BAT1%2B12mbx4i1fA@mail.gmail.com> In-Reply-To: <8B59D754-9062-4499-9873-7C2167622032@gromit.dlib.vt.edu> References: <8B59D754-9062-4499-9873-7C2167622032@gromit.dlib.vt.edu>
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On Oct 4, 2011 5:50 AM, "Paul Mather" <paul@gromit.dlib.vt.edu> wrote:
[snip]
> I have a raidz2 ZFS pool on a system that I have recently been using as a
mirror for about 6.5 TiB of data. The data are mirrored nightly using
rsync. I noticed during these nightly rsync copies I would get some errors
like this:
>
> =====
> file has vanished: "/backups/storage/san/DLA/DLA_Records/05DLAAdmin"
> rsync: stat "/backups/storage/san/DLA/DLA_Records/05DLAAdmin" failed: No
such file or directory (2)
> rsync: recv_generator: mkdir
"/backups/storage/san/DLA/DLA_Records/05DLAAdmin/05DI_business copy" failed:
No such file or directory (2)
> *** Skipping any contents from this failed directory ***
[snip]
> I know ZFS does not have a fsck utility ("because it doesn't need one":),
but does anyone know of any way of fixing this corruption short of
destroying the pool, creating a new one, and restoring from backup? Is
there some way of exporting and re-importing the pool that has the
side-effect of doing some kind of fsck-like repairing of subtle corruption
like this?
>
> Cheers,
>
> Paul.
>
Paul,
I'd be looking at the hardware or drivers.
What disk model are you using and what controller?
Are you using port multipliers and are there known issues with your hardware
combination?
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