On Sat, 14 Feb 2009 15:40:04 -0600 (CST)
David Dyer-Bennet <d...@dd-b.net> wrote:

> 
> On Sat, February 14, 2009 13:04, Blake wrote:
> > I think you can kill the destroy command process using traditional
> > methods.
> 
> kill and kill -9 failed.  In fact, rebooting failed; I had to use a
> hard reset (it shut down most of the way, but then got stuck).
> 
> > Perhaps your slowness issue is because the pool is an older format.
> > I've not had these problems since upgrading to the zfs version that
> > comes default with 2008.11
> 
> We can hope.  In case that's the cause, I upgraded the pool format
> (after considering whether I'd be needing to access it with older
> software; hope I was right :-)).
> 
> The pool did import and scrub cleanly, anyway.  That's hopeful.  Also
> this particular pool is a scratch pool at the moment, so I'm not
> risking losing data, only risking losing confidence in ZFS.  It's
> also a USB external disk.

Hi David,
if this happens to you again, you could help get more
data on the problem by getting a crash dump, either forced
or via reboot or (if you have a dedicated dump device, via
savecore:

(dedicated dump dev, )
# savecore -L /var/crash/`uname -n`

or

# reboot -dq


(forced, 64bit mode)
# echo "0>rip"|mdb -kw

(forced, 32bit mode)
# echo "0>eip"|mdb -kw


Try the command line options first, only use the mdb
kick in the guts if the other two fail.

Once you've got the core, you could post the output of

::status
$C

when run over the core with mdb -k.



James C. McPherson
--
Senior Kernel Software Engineer, Solaris
Sun Microsystems
http://blogs.sun.com/jmcp       http://www.jmcp.homeunix.com/blog
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