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Date:      Mon, 03 Jun 2002 11:18:42 +1000
From:      Peter Jeremy <peter.jeremy@alcatel.com.au>
To:        freebsd-current@freebsd.org
Subject:   Deadlock using snapshots
Message-ID:  <20020603111842.D351@gsmx07.alcatel.com.au>

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I decided to do some experimenting with snapshots and managed to
deadlock my system.  (Basically, I had a cron job that was trying
to snapshot all my filesystems every 5 minutes - with a view to
being able to undo any "accidents" I might make).  I'd reached
about 5 snapshots per filesystem when it hung.

I've found a few other anomolies with snapshots, but deadlocks are
undesirable :-(.

The system was still running normally, but nothing could access the
filesystem.  Breaking into 'ps' showed that the deadlocked processes
were all waiting on "inode".  I've got a crash dump but would like
some suggestions on where to start looking.

The system is -CURRENT from 7th May.

Peter

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