On Thu 23-02-12 11:48:53, Jan Kara wrote:

  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:

  BTW, the first message is:
[ 1626.278347] XFS (vdb1): xlog_space_left: head behind tail
[ 1626.278349]   tail_cycle = 7, tail_bytes = 12907008
[ 1626.278351]   GH   cycle = 7, GH   bytes = 12907000

								Honza

[ 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 [off-list ref]
SUSE Labs, CR

-- 
Jan Kara [off-list ref]
SUSE Labs, CR

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