SMP: Background fsck deadlocks CURRENT and RELENG_5 solid

Brian Fundakowski Feldman green at
Thu Aug 19 21:11:51 PDT 2004

On Thu, Aug 19, 2004 at 07:06:53PM -0700, Doug White wrote:
> On Thu, 19 Aug 2004, Martin Blapp wrote:
> > > > I'm currently not able to reboot a paniced or unsincedy disk without
> > > > doing a normal fsck. Just when the background fsck starts, the box
> > > > locks solid. The load at this time is not significant.
> > >
> > > You might have a corrupted fs from earlier panics.  Do a full fsck in single
> > > user mode and keep doing it until you have no errors (i.e., if it fixes
> > > anything run fsck again in a loop until you get no fixups at all).
> >
> > Nope. This happens on two different SMP boxes. If background fsck comes
> > into play (whatever happened before is not important), the boxes lock.
> Can't say I 've had problems with this while debugging the IPI hangs.  And
> those are rock solid.

I am having lock ups every day now (I think AGP-related wrt the nvidia
driver, so I have just now disabled that)... but I certainly never got
any due to background fsck.

Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green at                               \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\

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