ZFS & MySQL

Hi,

Can somebody who has done MySQL benchmarks (e.g. Kris
Kennaway, but I
don't want to point fingers  ) try them
when MySQL is hosted on ZFS?
I'm currently having a problem where mysqld gets stuck in
"zfs" state
and it becomes completely unusable and unkillable. The
machine generally
works, but cannot be rebooted from the OS in this case (it
must be
manually power-cycled).

I think a (possibly long-ish) stress test on a multi-CPU
machine (my own
is only dual, but has a relatively big uptime) with both
reading and
writing via mysqld might ferret out a problem with
concurrency.

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