process hang in zfs->io_ ?

[Thomas Sparrevohn]

I have noticed the same error - However I am not actually sure that ZFS is the culprit - I tried to remotely log in from my laptop and the system unfroze 
 

-----Original Message-----
From: owner-freebsd-current at freebsd.org [mailto:owner-freebsd-current at freebsd.org] On Behalf Of Rong-en Fan
Sent: 01 February 2009 08:24
To: FreeBSD Current
Subject: process hang in zfs->io_ ?

I'm running current as of 20080130 on an amd64 box. I can make
processes stuck in zfs->io_ (output truncated in ddb and top) when I
make some packages via ports tinderbox. The ports tinderbox access
local disk via nfs (I also tried nullfs).

ddb output of ps and alltrace can be found at

http://www.rafan.org/FreeBSD/zfs/textdump.zfs.20090130.txt

Any ideas?

Thanks,
Rong-En Fan
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