[Tiger] Automount dying, killing system

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[Tiger] Automount dying, killing system

Kyle Sluder
Hi list,

Over the past week our network has been dying a slow and painful
death, with random application crashes.  Seems something finally gave
up the ghost this week, and now all of our machines lock up when
trying to browse /Network in Finder.  All home folders are mounted
over NFS, which seems to be causing the crashes, but nothing about the
configuration has changed in the past three weeks.

If I SSH into a machine and trigger the crash, I can follow system.log
and see the following appear:
Mar  3 20:42:21 news3 automount[187]: objc: FREED(id): message
newServiceWithName:service:serviceURL: sent to freed object=0x180e800
Mar  3 20:42:34 news3 kernel[0]: nfs server automount -nsl [187]: not responding
Mar  3 20:42:34 news3 kernel[0]: nfs server automount -nsl [187]: not responding
Mar  3 20:42:34 news3 KernelEventAgent[33]: tid 00000000 received
VQ_NOTRESP event (1)
Mar  3 20:42:34 news3 KernelEventAgent[33]: tid 00000000 type 'nfs',
mounted on '/Network', from 'automount -nsl [187]', not responding
Mar  3 20:43:05 news3 kernel[0]: nfs server automount -nsl [187]: not responding
Mar  3 20:43:05 news3 kernel[0]: nfs server automount -nsl [187]: not responding
Mar  3 20:43:36 news3 kernel[0]: nfs server automount -nsl [187]: not responding
Mar  3 20:43:36 news3 kernel[0]: nfs server automount -nsl [187]: not responding

The only way to get the machine back is a hard power cycle.  Has
anyone seen this issue before?  Regardless of if what is causing it is
under my domain, there should never be a case where automount
double-frees an object, so I've already filed this as rdar #5778638.
Upgrading to 10.5 and ditching automount altogether, while very
appealing, is out of the question.

Thanks,
--Kyle Sluder
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