kernel deadlock; xfs

From: Ragnar Kjørstad (xfs@ragnark.vestdata.no)
Date: Wed Jul 18 2001 - 12:57:23 EST

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We're experiencing a deadlock on a NFS-server using a XFS filesystem.
The kernel was originally running SGI XFS 1.0, but we've now tried 1.0.1
and the CVS-version (as of yesterday) - same problem.

The deadlock appear to be happening when accessing big files over NFS,
but we're not sure as we have not found a way to reproduce. There are no
kernel messages written to syslog, and the kernel debugger does not
start when pressing pause.

I assume that means the problem is inside an interrupt handler? Does
that exclude XFS as the potential problem?

The system is using aic7xxx SCSI adapters and hamachi gigabit ethernet
card.

We're going to try with a different filesystem and a different gigabit
card next, but if you have other suggestions for how to debug this,
please let us know.

-- 
Ragnar Kjorstad
Big Storage
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