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Date:      Fri, 30 Aug 2013 21:50:47 +0200
From:      =?iso-8859-2?Q?Edward_Tomasz_Napiera=B3a?= <trasz@FreeBSD.org>
To:        Zaphod Beeblebrox <zbeeble@gmail.com>
Cc:        FreeBSD Stable <freebsd-stable@freebsd.org>
Subject:   Re: gmirror crash writing to disk? Or is it su+j crash?
Message-ID:  <370A25C8-7747-4B96-A506-EB92FD0F77CF@FreeBSD.org>
In-Reply-To: <CACpH0MdU5NMi=GvYbG5W-F-UkH=s89d8Docvz8_KS0%2BfqNH1cQ@mail.gmail.com>
References:  <CACpH0MdU5NMi=GvYbG5W-F-UkH=s89d8Docvz8_KS0%2BfqNH1cQ@mail.gmail.com>

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Wiadomo=B6=E6 napisana przez Zaphod Beeblebrox <zbeeble@gmail.com> w =
dniu 29 sie 2013, o godz. 23:35:
> So I have a system running:
>=20
> FreeBSD walk.dclg.ca 9.2-RC3 FreeBSD 9.2-RC3 # r254952: Wed Aug 28 =
03:02:55
> EDT 2013     root@walk.dclg.ca:/usr/obj/usr/src/sys/STRIKE  i386
>=20
> and it has two 2T SATA disks.  To keep this post short, the crash.txt =
is
> here.
>=20
> =
https://uk.eicat.ca/owncloud/public.php?service=3Dfiles&t=3Dfea9d25579fe0c=
4afb808859e80e1493

Login error.

> now curiously, while running a "make -j4 buildkernel" ... almost every =
time
> ... it crashes with:
>=20
> g_vfs_done():mirror/walke[WRITE(offset=3D516764794880, =
length=3D65536)]error =3D
> 11
> /usr: got error 11 while accessing filesystem
> panic: softdep_deallocate_dependencies: unrecovered I/O error

This is softupdates panic caused by write operation returning error 11, =
which,
according to 'man errno', is EDEADLK.

To be honest, I have no idea why gmirror might be returning this error.

> ... no error report from the hard drives, simply an error report from =
the
> mirror.

Note that ahci(4) does not log errors unless you're running with =
bootverbose.

> The filesystem is ufs with su+j... but I'm not sure this matters here.

It does, kind of - without soft updates/SUJ, the error would be =
non-fatal - it
wouldn't panic the box, but it would (probably) cause data corruption.




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