panic: bundirty: buffer 0xc776e118 still on queue 2
Tim Robbins
tjr at FreeBSD.ORG
Thu Aug 21 00:57:53 PDT 2003
On Thu, Aug 21, 2003 at 08:14:45AM +0200, Christian Brueffer wrote:
> On Thu, Aug 21, 2003 at 01:40:54PM +1000, Tim Robbins wrote:
> > On Thu, Aug 21, 2003 at 12:26:07AM +0200, Christian Brueffer wrote:
> >
> > > Hi,
> > >
> > > just got a panic on following 5.1-CURRENT machine:
> > >
> > > FreeBSD gondor.middleearth 5.1-CURRENT FreeBSD 5.1-CURRENT #1: Thu Aug
> > > 7 21:32:39 CEST 2003 chris at haa konia.hitnet.rwth-aachen.de:/usr/obj/usr/src/sys/GONDOR i386
> > >
> > > A dump is available if anyone needs specific information.
> > [...]
> > > panic: bundirty: buffer 0xc776e118 still on queue 2^M
> > [...]
> > > #2 0xc0254007 in panic (fmt=0xc03cc0ef "bundirty: buffer %p still on queue %d")^M
> > > at /usr/src/sys/kern/kern_shutdown.c:550^M
> > > #3 0xc029b291 in bundirty (bp=0xc776e118) at /usr/src/sys/kern/vfs_bio.c:1121^M
> > > #4 0xc029bde1 in brelse (bp=0xc776e118) at /usr/src/sys/kern/vfs_bio.c:1436^M
> > > #5 0xc02efcb8 in nfs_writebp (bp=0xc776e118, force=1, td=0xc2c17e40)^M
> > > at /usr/src/sys/nfsclient/nfs_vnops.c:2987^M
> > > #6 0xc02e02c3 in nfs_bwrite (bp=0x0) at /usr/src/sys/nfsclient/nfs_bio.c:76^M
> > > #7 0xc029dd41 in getblk (vp=0xc2c77b68, blkno=400, size=15360, slpflag=256, slptimeo=0, flags=0)^M
> > > at /usr/src/sys/kern/vfs_bio.c:2512^M
> > > #8 0xc02e21e5 in nfs_getcacheblk (vp=0xc2c77b68, bn=400, size=15360, td=0xc2c17e40)^M
> > > at /usr/src/sys/nfsclient/nfs_bio.c:1037^M
> >
> > I think I recognise this backtrace. Did you have a read-only NFS mount
> > active at the time of the crash? In any case, a copy of your NFS entries from
> > /etc/fstab (with any private data removed) would be helpful in tracking this
> > problem down.
> >
>
> No, all mounts were read-write.
Did one of the servers go down shortly before the panic, then? The last few
lines of dmesg might be useful.
Tim
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