Many processes stuck in zfs
Pawel Jakub Dawidek
pjd at FreeBSD.org
Wed Mar 10 11:02:11 UTC 2010
On Wed, Mar 10, 2010 at 10:24:49AM +0100, Borja Marcos wrote:
> Tested. Same deadlock remains.
Ok, to track this down I need the following:
Uncomment 'CFLAGS+=-DDEBUG=1' line in sys/modules/zfs/Makefile.
Add the following lines to your kernel config:
options WITNESS
options WITNESS_SKIPSPIN
options INVARIANTS
options INVARIANT_SUPPORT
options DEBUG_VFS_LOCKS
options DEBUG_LOCKS
options KDB
options DDB
Recompile your kernel and modules and reboot.
Once the deadlock occur, enter DDB and send me the output of:
ps
show alllocks
show lockedvnods
show allchains
alltrace
Thanks.
--
Pawel Jakub Dawidek http://www.wheelsystems.com
pjd at FreeBSD.org http://www.FreeBSD.org
FreeBSD committer Am I Evil? Yes, I Am!
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