Run btrfs balance and subvolume create/mount/umount/delete simultaneously,
with fsstress running in background.

Signed-off-by: Eryu Guan <eg...@redhat.com>
---
 common/rc           | 110 +++++++++++++++++++++++++++++++++++++++++++++++--
 tests/btrfs/059     | 115 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/btrfs/059.out |   2 +
 tests/btrfs/group   |   1 +
 4 files changed, 224 insertions(+), 4 deletions(-)
 create mode 100755 tests/btrfs/059
 create mode 100644 tests/btrfs/059.out

diff --git a/common/rc b/common/rc
index b8f711a..a0677da 100644
--- a/common/rc
+++ b/common/rc
@@ -582,11 +582,17 @@ _scratch_pool_mkfs()
 {
     case $FSTYP in
     btrfs)
-       $MKFS_BTRFS_PROG $MKFS_OPTIONS $* $SCRATCH_DEV_POOL > /dev/null
-       ;;
+        # if dup profile is in mkfs options call _scratch_mkfs instead
+        # because dup profile only works with single device
+        if [[ "$*" =~ dup ]]; then
+            _scratch_mkfs $*
+        else
+            $MKFS_BTRFS_PROG $MKFS_OPTIONS $* $SCRATCH_DEV_POOL > /dev/null
+        fi
+        ;;
     *)
-       echo "_scratch_pool_mkfs is not implemented for $FSTYP" 1>&2
-       ;;
+        echo "_scratch_pool_mkfs is not implemented for $FSTYP" 1>&2
+        ;;
     esac
 }
 
@@ -2483,6 +2489,102 @@ _get_free_inode()
        echo $nr_inode
 }
 
+# get btrfs profile configs being tested
+#
+# A set of pre-set profile configs are exported via _btrfs_profile_configs
+# array. Default configs can be overridden by setting BTRFS_PROFILE_CONFIGS
+# var in the format "metadata_profile:data_profile", multiple configs can be
+# seperated by space, e.g.
+# export BTRFS_PROFILE_CONFIGS="raid0:raid0 raid1:raid1 dup:single"
+_btrfs_get_profile_configs()
+{
+       if [ "$FSTYP" != "btrfs" ]; then
+               return
+       fi
+
+       # no user specified btrfs profile configs, export the default configs
+       if [ -z "$BTRFS_PROFILE_CONFIGS" ]; then
+               # default configs
+               _btrfs_profile_configs=(
+                       "-m single -d single"
+                       "-m dup -d single"
+                       "-m raid0 -d raid0"
+                       "-m raid1 -d raid0"
+                       "-m raid1 -d raid1"
+                       "-m raid10 -d raid10"
+                       "-m raid5 -d raid5"
+                       "-m raid6 -d raid6"
+               )
+
+               # remove dup/raid5/raid6 profiles if we're doing device replace
+               # dup profile indicates only one device being used 
(SCRATCH_DEV),
+               # but we don't want to replace SCRATCH_DEV, which will be used 
in
+               # _scratch_mount/_check_scratch_fs etc.
+               # and raid5/raid6 doesn't support replace yet
+               if [ "$1" == "replace" ]; then
+                       _btrfs_profile_configs=(
+                               "-m single -d single"
+                               "-m raid0 -d raid0"
+                               "-m raid1 -d raid0"
+                               "-m raid1 -d raid1"
+                               "-m raid10 -d raid10"
+                               # add these back when raid5/6 is working with 
replace
+                               #"-m raid5 -d raid5"
+                               #"-m raid6 -d raid6"
+                       )
+               fi
+               export _btrfs_profile_configs
+               return
+       fi
+
+       # parse user specified btrfs profile configs
+       local i=0
+       local cfg=""
+       for cfg in $BTRFS_PROFILE_CONFIGS; do
+               # turn "metadata:data" format to "-m metadata -d data"
+               # and assign it to _btrfs_profile_configs array
+               cfg=`echo "$cfg" | sed -e 's/^/-m /' -e 's/:/ -d /'`
+               _btrfs_profile_configs[$i]="$cfg"
+               let i=i+1
+       done
+
+       if [ "$1" == "replace" ]; then
+               if echo ${_btrfs_profile_configs[*]} | grep -q raid[56]; then
+                       _notrun "RAID5/6 doesn't support btrfs device replace 
yet"
+               fi
+               if echo ${_btrfs_profile_configs[*]} | grep -q dup; then
+                       _notrun "Do not set dup profile in btrfs device replace 
test"
+               fi
+       fi
+       export _btrfs_profile_configs
+}
+
+# stress btrfs by running balance operation in a loop
+_btrfs_stress_balance()
+{
+       local btrfs_mnt=$1
+       while true; do
+               $BTRFS_UTIL_PROG balance start $btrfs_mnt
+       done
+}
+
+# stress btrfs by creating/mounting/umounting/deleting subvolume in a loop
+_btrfs_stress_subvolume()
+{
+       local btrfs_dev=$1
+       local btrfs_mnt=$2
+       local subvol_name=$3
+       local subvol_mnt=$4
+
+       mkdir -p $subvol_mnt
+       while true; do
+               $BTRFS_UTIL_PROG subvolume create $btrfs_mnt/$subvol_name
+               $MOUNT_PROG -o subvol=$subvol_name $btrfs_dev $subvol_mnt
+               $UMOUNT_PROG $subvol_mnt
+               $BTRFS_UTIL_PROG subvolume delete $btrfs_mnt/$subvol_name
+       done
+}
+
 init_rc()
 {
        if [ "$iam" == new ]
diff --git a/tests/btrfs/059 b/tests/btrfs/059
new file mode 100755
index 0000000..5017299
--- /dev/null
+++ b/tests/btrfs/059
@@ -0,0 +1,115 @@
+#! /bin/bash
+# FSQA Test No. btrfs/059
+#
+# Run btrfs balance and subvolume create/mount/umount/delete simultaneously,
+# with fsstress running in background.
+#
+#-----------------------------------------------------------------------
+# Copyright (C) 2014 Red Hat Inc. All rights reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+#-----------------------------------------------------------------------
+#
+
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+       cd /
+       rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+_supported_fs btrfs
+_supported_os Linux
+# we check scratch dev after each loop
+_require_scratch_nocheck
+_require_scratch_dev_pool 4
+_btrfs_get_profile_configs
+
+rm -f $seqres.full
+
+run_test()
+{
+       local mkfs_opts=$1
+       local subvol_mnt=$TEST_DIR/$seq.mnt
+
+       echo "Test $mkfs_opts" >>$seqres.full
+
+       _scratch_pool_mkfs $mkfs_opts >>$seqres.full 2>&1
+       # make sure we created btrfs with desired options
+       if [ $? -ne 0 ]; then
+               echo "mkfs $mkfs_opts failed" | tee -a $seqres.full
+               return
+       fi
+       _scratch_mount >>$seqres.full 2>&1
+
+       args=`_scale_fsstress_args -p 20 -n 100 $FSSTRESS_AVOID -d 
$SCRATCH_MNT/stressdir`
+       echo "Run fsstress $args" >>$seqres.full
+       $FSSTRESS_PROG $args >/dev/null 2>&1 &
+       fsstress_pid=$!
+
+       echo -n "Start balance worker: " >>$seqres.full
+       _btrfs_stress_balance $SCRATCH_MNT >/dev/null 2>&1 &
+       balance_pid=$!
+       echo "$balance_pid" >>$seqres.full
+
+       echo -n "Start subvolume worker: " >>$seqres.full
+       _btrfs_stress_subvolume $SCRATCH_DEV $SCRATCH_MNT subvol_$$ $subvol_mnt 
>/dev/null 2>&1 &
+       subvol_pid=$!
+       echo "$subvol_pid" >>$seqres.full
+
+       echo "Wait for fsstress to exit and kill all background workers" 
>>$seqres.full
+       wait $fsstress_pid
+
+       kill $balance_pid $subvol_pid
+       wait
+       # wait for the balance operation to finish
+       while ps aux | grep "balance start" | grep -qv grep; do
+               sleep 1
+       done
+
+       echo "Scrub the filesystem" >>$seqres.full
+       $BTRFS_UTIL_PROG scrub start -B $SCRATCH_MNT >>$seqres.full 2>&1
+       if [ $? -ne 0 ]; then
+               echo "Scrub find errors in \"$mkfs_opts\" test" | tee -a 
$seqres.full
+       fi
+
+       # in case the subvolume is still mounted
+       $UMOUNT_PROG $subvol_mnt >/dev/null 2>&1
+       _scratch_unmount
+       # we called _require_scratch_nocheck instead of _require_scratch
+       # do check after test for each profile config
+       _check_scratch_fs
+}
+
+echo "Silence is golden"
+for t in "${_btrfs_profile_configs[@]}"; do
+       run_test "$t"
+done
+
+status=0
+exit
diff --git a/tests/btrfs/059.out b/tests/btrfs/059.out
new file mode 100644
index 0000000..36ebeea
--- /dev/null
+++ b/tests/btrfs/059.out
@@ -0,0 +1,2 @@
+QA output created by 059
+Silence is golden
diff --git a/tests/btrfs/group b/tests/btrfs/group
index 3fa9778..c66c42c 100644
--- a/tests/btrfs/group
+++ b/tests/btrfs/group
@@ -61,3 +61,4 @@
 056 auto quick
 057 auto quick
 058 auto quick
+059 auto balance subvol
-- 
1.8.3.1

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