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Date: Tue, 13 Dec 2011 09:42:46 +0900
From: Masayoshi MIZUMA <m.mizuma@...fujitsu.com>
To: Christoph Hellwig <hch@...radead.org>
Cc: linux-fsdevel@...r.kernel.org, xfs@....sgi.com,
linux-ext4@...r.kernel.org, Dave Chinner <david@...morbit.com>
Subject: [PATCH] update 068 to reproduce an unfreeze hanging up problem
update 068 to reproduce an unfreeze hanging up problem which is unfreeze
function, thaw_super(), sometimes hangs up if flush kernel thread does
writeback to the same filesystem concurrently.
The problem occurs on ext4 and ext3. They are reported at
ext4:
http://marc.info/?l=linux-ext4&m=132339590004560&w=2
ext3:
http://marc.info/?l=linux-ext4&m=131536612113658&w=2
This test runs freeze/unfreeze under heavy load. If the problem is
reproduced, this test will hang up because "xfs_freeze -u" hangs up...
Signed-off-by: Masayoshi MIZUMA <m.mizuma@...fujitsu.com>
---
068 | 17 +++----
068.out | 160 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 167 insertions(+), 10 deletions(-)
diff --git a/068 b/068
index 5d0053d..3b3597d 100755
--- a/068
+++ b/068
@@ -32,7 +32,7 @@ here=`pwd`
tmp=/tmp/$$
status=0 # success is the default!
-ITERATIONS=10
+ITERATIONS=50
_cleanup()
{
@@ -51,7 +51,7 @@ trap "_cleanup" 0 1 2 3 15
. ./common.filter
# real QA test starts here
-_supported_fs xfs
+_supported_fs ext3 ext4 xfs
_supported_os Linux IRIX
_require_scratch
@@ -62,7 +62,7 @@ rm -f $seq.full
umount $SCRATCH_DEV >/dev/null 2>&1
echo "*** MKFS ***" >>$seq.full
echo "" >>$seq.full
-_scratch_mkfs_xfs >>$seq.full 2>&1 \
+_scratch_mkfs >>$seq.full 2>&1 \
|| _fail "mkfs failed"
_scratch_mount >>$seq.full 2>&1 \
|| _fail "mount failed"
@@ -75,12 +75,11 @@ touch $tmp.running
STRESS_DIR="$SCRATCH_MNT/fsstress_test_dir"
mkdir "$STRESS_DIR"
- procs=2
- nops=200
+ procs=100
+ nops=1000
while [ -f "$tmp.running" ]
- do
- # -w ensures that the only ops are ones which cause write I/O
- $FSSTRESS_PROG -d $STRESS_DIR -w -p $procs -n $nops $FSSTRESS_AVOID \
+ do
+ $FSSTRESS_PROG -d $STRESS_DIR -p $procs -n $nops $FSSTRESS_AVOID \
> /dev/null 2>&1
done
@@ -99,13 +98,11 @@ do
xfs_freeze -f "$SCRATCH_MNT" | tee -a $seq.full
[ $? != 0 ] && echo xfs_freeze -f "$SCRATCH_MNT" failed | \
tee -a $seq.full
- sleep 2
echo "*** thawing \$SCRATCH_MNT" | tee -a $seq.full
xfs_freeze -u "$SCRATCH_MNT" | tee -a $seq.full
[ $? != 0 ] && echo xfs_freeze -u "$SCRATCH_MNT" failed | \
tee -a $seq.full
- sleep 2
echo | tee -a $seq.full
let i=$i+1
diff --git a/068.out b/068.out
index 363d0e9..11eb58d 100644
--- a/068.out
+++ b/068.out
@@ -41,3 +41,163 @@ QA output created by 068
*** freezing $SCRATCH_MNT
*** thawing $SCRATCH_MNT
+*** iteration: 10
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 11
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 12
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 13
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 14
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 15
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 16
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 17
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 18
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 19
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 20
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 21
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 22
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 23
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 24
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 25
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 26
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 27
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 28
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 29
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 30
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 31
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 32
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 33
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 34
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 35
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 36
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 37
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 38
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 39
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 40
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 41
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 42
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 43
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 44
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 45
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 46
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 47
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 48
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
+*** iteration: 49
+*** freezing $SCRATCH_MNT
+*** thawing $SCRATCH_MNT
+
--
1.7.1
Thanks,
Masayoshi Mizuma
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