From: Jan Kara <jack@suse.cz>
To: xfs@oss.sgi.com
Subject: xlog_space_left: head behind tail
Date: Thu, 23 Feb 2012 11:48:53 +0100 [thread overview]
Message-ID: <20120223104853.GA24638@quack.suse.cz> (raw)
Hello,
when I run:
while true; do ~/tests/xfstests-dev/ltp/fsstress -d /mnt -n 10000 -p 4; done
and in parallel
while true; do ./fsfreeze /mnt; sync; ./fsfreeze -u /mnt; sleep 3; done
where fsfreeze is a small utility freezing and unfreezing filesystem. I get
warnings like:
[ 2029.103193] XFS (vdb1): xlog_space_left: head behind tail
[ 2029.103195] tail_cycle = 10, tail_bytes = 6036480
[ 2029.103197] GH cycle = 10, GH bytes = 6035728
[ 2029.103218] XFS (vdb1): xlog_space_left: head behind tail
[ 2029.103219] tail_cycle = 10, tail_bytes = 6036480
[ 2029.103220] GH cycle = 10, GH bytes = 6035728
[ 2033.269796] XFS (vdb1): xlog_space_left: head behind tail
[ 2033.269800] tail_cycle = 10, tail_bytes = 6400512
[ 2033.269803] GH cycle = 10, GH bytes = 6399752
[ 2033.269830] XFS (vdb1): xlog_space_left: head behind tail
[ 2033.269835] tail_cycle = 10, tail_bytes = 6400512
[ 2033.269838] GH cycle = 10, GH bytes = 6399752
[ 2033.269847] XFS (vdb1): xlog_space_left: head behind tail
[ 2033.269850] tail_cycle = 10, tail_bytes = 6400512
[ 2033.269852] GH cycle = 10, GH bytes = 6399752
[ 2033.269892] XFS (vdb1): xlog_space_left: head behind tail
[ 2033.269894] tail_cycle = 10, tail_bytes = 6400512
[ 2033.269896] GH cycle = 10, GH bytes = 6399752
[ 2033.269915] XFS (vdb1): xlog_space_left: head behind tail
[ 2033.269918] tail_cycle = 10, tail_bytes = 6400512
[ 2033.269920] GH cycle = 10, GH bytes = 6399752
They usually start to appear like 20 minutes after starting the tests and
when they start to appear they happen every couple of seconds (as you can
see from the timestamps). Is it a real problem or just annoyance?
Honza
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR
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next reply other threads:[~2012-02-23 10:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-23 10:48 Jan Kara [this message]
2012-02-23 10:54 ` xlog_space_left: head behind tail Jan Kara
2012-02-27 1:28 ` Dave Chinner
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