zfs process hang on pool access

[Steven Hartland]

Is there a PR related to this so we can track progress. Having to reboot machines
every 100+ days to ensure they don't break is a bit of a PITA when you've got hundreds
of machines :(

----- Original Message ----- 
From: "David P Discher" <dpd at bitgravity.com>
To: "Steven Hartland" <killing at multiplay.co.uk>
Cc: <freebsd-fs at FreeBSD.org>; "Andriy Gapon" <avg at freebsd.org>
Sent: Wednesday, July 27, 2011 9:41 PM
Subject: Re: zfs process hang on pool access


The way I found this was breaking into the debugger, do some back traces, continue, break in again, do some more back traces on 
the hung processes ... see what is going on, then walk through the code.

Then what I had specific loops and code locations, asking the higher powers of the freebsd kernel world.

... 


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