kern/132068: [zfs] page fault when using ZFS over NFS on 7.1-RELEASE/amd64

[Mark Linimon]

The following reply was made to PR kern/132068; it has been noted by GNATS.

From: Mark Linimon <linimon at lonesome.com>
To: bug-followup at FreeBSD.org
Cc:  
Subject: Re: kern/132068: [zfs] page fault when using ZFS over NFS on
	7.1-RELEASE/amd64
Date: Thu, 5 Mar 2009 09:29:11 -0600

 ----- Forwarded message from Edward Fisk <7ogcg7g02 at sneakemail.com> -----
 
 To: freebsd-bugs at FreeBSD.org
 From: Edward Fisk <7ogcg7g02 at sneakemail.com>
 Subject: Re: kern/132068: [zfs] page fault when using ZFS over NFS on
 	7.1-RELEASE/amd64
 
 I tried with the patch kindly provided by Jaakko.  The machine would no
 longer panic, but would instead deadlock every 1-2 hours when in use.
 I then did a source upgrade to 8-CURRENT (27022008) with a GENERIC
 kernel, which had the same result: a deadlock every 1 to 2 hours when in use.
 
 The machine is now running a GENERIC kernel with the following options added:
 
 options INVARIANTS
 options INVARIANT_SUPPORT
 options WITNESS
 options DEBUG_LOCKS
 options DEBUG_VFS_LOCKS
 options DIAGNOSTIC
 
 Unfortunately, I've yet to be able to get it to deadlock, despite the
 workload on the machine not having changed.
 
 ----- End forwarded message -----