gmirror crash writing to disk? Or is it su+j crash?

[Zaphod Beeblebrox]

My bad.  New link for the core.txt.4:

https://uk.eicat.ca/owncloud/public.php?service=files&t=f471e5afae483342cd20dc390e9c2dd7




On Fri, Aug 30, 2013 at 4:51 PM, Ian Lepore <ian at freebsd.org> wrote:

> On Fri, 2013-08-30 at 21:50 +0200, Edward Tomasz Napierała wrote:
> > Wiadomość napisana przez Zaphod Beeblebrox <zbeeble at gmail.com> w dniu
> 29 sie 2013, o godz. 23:35:
> > > So I have a system running:
> > >
> > > FreeBSD walk.dclg.ca 9.2-RC3 FreeBSD 9.2-RC3 # r254952: Wed Aug 28
> 03:02:55
> > > EDT 2013     root at walk.dclg.ca:/usr/obj/usr/src/sys/STRIKE  i386
> > >
> > > and it has two 2T SATA disks.  To keep this post short, the crash.txt
> is
> > > here.
> > >
> > >
> https://uk.eicat.ca/owncloud/public.php?service=files&t=fea9d25579fe0c4afb808859e80e1493
> >
> > Login error.
> >
> > > now curiously, while running a "make -j4 buildkernel" ... almost every
> time
> > > ... it crashes with:
> > >
> > > g_vfs_done():mirror/walke[WRITE(offset=516764794880,
> length=65536)]error =
> > > 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.
>
> One of the few places in the kernel that uses EDEADLK is in geom_io.c
> (line 642 in -current) in g_io_transient_map_bio()...
>
>                 g_io_deliver(bp, EDEADLK/* XXXKIB */);
>
> -- Ian
>
>
>