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.


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