The backref resolver test for btrfs was run on a static file system so far.
Resolving backrefs on a busy file system is what happens in reality and that
is what should be checked by this test.
I added a parameter such that the script can easily be changed to the former
behavior for development purposes.
Furthermore, this increases two constants which make the test simply cycle a
few seconds longer, increasing the chance to hit on something suspicious in
case we broke something.
Signed-off-by: Jan Schmidt <list.btrfs@xxxxxxxxxxxxx>
---
276 | 29 ++++++++++++++++++++++++++---
1 files changed, 26 insertions(+), 3 deletions(-)
diff --git a/276 b/276
index 65da464..40b30cf 100755
--- a/276
+++ b/276
@@ -33,9 +33,16 @@ echo "QA output created by $seq"
here=`pwd`
tmp=/tmp/$$
status=1
+noise_pid=0
_cleanup()
{
+ if [ $noise_pid -ne 0 ]; then
+ echo "background noise kill $noise_pid" >>$seq.full
+ kill $noise_pid
+ noise_pid=0
+ wait
+ fi
echo "*** unmount"
umount $SCRATCH_MNT 2>/dev/null
rm -f $tmp.*
@@ -171,6 +178,7 @@ workout()
nfiles=$2
procs=$3
snap_name=$4
+ do_bg_noise=$5
umount $SCRATCH_DEV >/dev/null 2>&1
echo "*** mkfs -dsize=$fsz" >>$seq.full
@@ -179,7 +187,7 @@ workout()
|| _fail "size=$fsz mkfs failed"
run_check _scratch_mount
# -w ensures that the only ops are ones which cause write I/O
- run_check $FSSTRESS_PROG -d $SCRATCH_MNT -w -p $procs -n 1000 \
+ run_check $FSSTRESS_PROG -d $SCRATCH_MNT -w -p $procs -n 2000 \
$FSSTRESS_AVOID
run_check $BTRFS_UTIL_PROG subvol snap $SCRATCH_MNT \
@@ -190,9 +198,10 @@ workout()
# make some noise but ensure we're not touching existing data
# extents.
- run_check $FSSTRESS_PROG -d $SCRATCH_MNT -p $procs -n 2000 \
+ run_check $FSSTRESS_PROG -d $SCRATCH_MNT -p $procs -n 4000 \
-z -f chown=3 -f link=1 -f mkdir=2 -f mknod=2 \
-f rename=2 -f setxattr=1 -f symlink=2
+
clean_dir="$SCRATCH_MNT/next"
mkdir $clean_dir
# now make more files to get a higher tree
@@ -201,6 +210,18 @@ workout()
run_check umount $SCRATCH_DEV >/dev/null 2>&1
run_check _scratch_mount "-o atime"
+ if [ $do_bg_noise -ne 0 ]; then
+ # make background noise while backrefs are being walked
+ while /bin/true; do
+ echo background fsstress >>$seq.full
+ run_check $FSSTRESS_PROG -d $SCRATCH_MNT/bgnoise -n 999
+ echo background rm >>$seq.full
+ rm -rf $SCRATCH_MNT/bgnoise/
+ done &
+ noise_pid=`jobs -p %1`
+ echo "background noise by $noise_pid" >>$seq.full
+ fi
+
cnt=0
errcnt=0
dir="$SCRATCH_MNT/$snap_name/"
@@ -230,6 +251,7 @@ workout()
break
fi
done
+
if [ $errcnt -gt 0 ]; then
_fail "test failed: $errcnt error(s)"
fi
@@ -241,8 +263,9 @@ snap_name="snap1"
filesize=`expr 2000 \* 1024 \* 1024`
nfiles=4
numprocs=1
+do_bg_noise=1
-workout $filesize $nfiles $numprocs $snap_name
+workout $filesize $nfiles $numprocs $snap_name $do_bg_noise
echo "*** done"
status=0
--
1.7.2.2
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