Date: Sun, 7 Dec 2008 11:21:13 +0100 From: Stefan Bethke <stb@lassitu.de> To: FreeBSD Current <freebsd-current@freebsd.org> Subject: ZFS gets stuck Message-ID: <5C97E586-4296-4835-A103-FD273B2D7A4F@lassitu.de> In-Reply-To: <31C70CBC-488A-4A9A-A642-37855E8F1DD1@lassitu.de> References: <20081117205526.GC1733@garage.freebsd.pl> <20081202203308.GA13818@hyperion.scode.org> <200812021254.21242.fjwcash@gmail.com> <20081202232924.GA19134@hyperion.scode.org> <31C70CBC-488A-4A9A-A642-37855E8F1DD1@lassitu.de>
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For the past week, I've been stress testing two new boxes by running
make -j4 universe. /usr/src is on ufs, /usr/obj on zfs, backed by a
single disk pool. Every so often (about once every one or two days),
processes start getting wedged on accessing the zfs file systems. Just
this morning I found:
output from make universe:
>> sparc64 started on Sun Dec 7 01:34:41 UTC 2008
>> amd64 completed on Sun Dec 7 02:18:39 UTC 2008
>> pc98 buildworld completed on Sun Dec 7 02:24:35 UTC 2008
>> sun4v started on Sun Dec 7 02:30:45 UTC 2008
ps shows me these processes that apparently are waiting on some zfs
operation:
0 81836 81830 0 47 0 6732 4056 zio->i D ?? 0:13.11
find -sx / /tank /tank/ports /usr/obj /dev/null -type f ( -perm -u+x -
or -perm -g+x -or -perm -o+x ) ( -perm -u+s -or -perm -g+s ) -exec ls -
liTd {} +
0 86345 86344 0 76 0 11392 10300 zio->i D+ 0 0:00.53
make all DIRPRFX=kerberos5/lib/libasn1/
0 91920 91420 0 76 0 7144 1792 zfsvfs D+ 0 0:00.00
sh -ev
0 91923 91902 0 76 0 2180 400 zfsvfs D+ 0 0:00.00
[cc]
0 91924 91900 0 76 0 10456 7572 zfsvfs D+ 0 0:00.02 /
usr/obj/pc98/usr/src/tmp/usr/libexec/cc1 -E -quiet -nostdinc -I. -I@ -
I@/contrib/altq -I/usr/obj/pc98/usr/src/sys/MAC -M -D_LONGLONG -DPC98 -
D_KERNEL -DKLD_MODULE -DHAVE_KERNEL_OPTION_HEADERS /usr/src/sys/
modules/smbfs/../../netsmb/smb_dev.c
df still works, ls /tank blocks.
FreeBSD lokschuppen.lassitu.de 8.0-CURRENT FreeBSD 8.0-CURRENT #1: Wed
Dec 3 07:05:03 UTC 2008 root@lokschuppen.lassitu.de:/usr/obj/usr/
src/sys/EISENBOOT amd64
So far, I've had this in loader.conf:
vfs.zfs.arc_max="512M"
vfs.zfs.prefetch_disable="1"
I'm now adding
vfs.zfs.zil_disable="1"
to see if that makes a difference.
Is there anything in particular people would want me to check out?
Kernel is GENERIC minus a number of devices, and without INVARIANTS
and WITNESS.
Stefan
--
Stefan Bethke <stb@lassitu.de> Fon +49 170 346 0140
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