i was seeing up to 14s suspends on /scr10 prior to the reconfig causing
mount point to be unresponsive on the clients. i'm using async option
also. the rsync is still going so won't go live again 'til next week.
thanks for the help.
------------------------------
Kevin Kramer
Sr. Systems Administrator
512.418.5725
Centaur Technology, Inc.
www.centtech.com
Pawel Jakub Dawidek wrote the following on 09/01/06 13:56:
On Fri, Sep 01, 2006 at 10:16:09AM -0500, Kevin Kramer wrote:
I've already redone the whole thing. here are the steps i took
umount /scr09
umount /scr10
gjournal stop da2.journal
gjournal stop da4.journal
** had not done this on the first attempt
newfs /dev/da1
newfs /dev/da3
This is not needed.
gjournal label -v /dev/da2 /dev/da1
gjournal label -v /dev/da4 /dev/da3
newfs -J -L scr09 /dev/da2.journal
newfs -J -L scr10 /dev/da4.journal
mount /scr09
mount /scr10
Don't know how your /etc/fstab looks like, but you definiately should
use 'async' mount option, which is safe to use with gjournaled file
systems.
it is looking much better so far. before, i was getting this in the debug (only
on /scr10) and my mountd process was always the top process
Sep 1 00:00:11 donkey kernel: fsync: giving up on dirty
Sep 1 00:00:11 donkey kernel: 0xc9ee1bb0: tag devfs, type VCHR
Sep 1 00:00:11 donkey kernel: usecount 1, writecount 0, refcount 198 mountedher
e 0xc9ebfb00
Sep 1 00:00:11 donkey kernel: flags ()
Sep 1 00:00:11 donkey kernel: v_object 0xc9fbb528 ref 0 pages 5933
Sep 1 00:00:11 donkey kernel: lock type devfs: EXCL (count 1) by thread 0xc9bd4
180 (pid 38)
Sep 1 00:00:11 donkey kernel: dev ufs/scr10
Sep 1 00:00:11 donkey kernel: GEOM_JOURNAL: Cannot suspend file system /scr10 (
error=35).
It happens sometimes under load, haven't investigated yet what exactly
is happening, but you can ignore it for now, it's harmless, it just
means journal switch will be done a bit later.
BTW. 8GB for journals is much. You should not need more than 2GB
probably. Of course it will work with 8GB just fine.
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