>From 1857fc6c7349a67cf930e73b802427a138e43456 Mon Sep 17 00:00:00 2001
From: Dmitry Monakhov <dmonakhov@openvz.org>
Date: Wed, 14 Apr 2010 14:53:47 +0400
Subject: [PATCH] xfstests-dev: add one more stress test

During stress testing we want to cover most of code paths.
fsstress is very good for this purpose. But it has expandable
nature (disk usage almost continually grow). So once we
goes it no ENOSPC condition we will be where till the end.

But by running 'dd' in parallel we can regularly trigger
ENOSPC but only for a limited periods of time.

This is my favorite stress test-case configuration.
---
 227     |  105 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 227.out |    5 +++
 group   |    1 +
 3 files changed, 111 insertions(+), 0 deletions(-)
 create mode 100755 227
 create mode 100644 227.out

diff --git a/227 b/227
new file mode 100755
index 0000000..d2b0c7d
--- /dev/null
+++ b/227
@@ -0,0 +1,105 @@
+#! /bin/bash
+# FS QA Test No. 227
+#
+# Perform fsstress test with parallel dd
+# This proven to be a good stress test
+# * Continuous dd retult in ENOSPC condition but only for a limited periods
+#   of time.
+# * Fsstress test cover many code paths
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2010 Dmitry Monakhov.  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
+#
+#-----------------------------------------------------------------------
+#
+# creator
+owner=dmonakhov@openvz.org
+
+seq=`basename $0`
+echo "QA output created by $seq"
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+
+_cleanup()
+{
+    rm -f $tmp.*
+}
+
+workout()
+{
+    # Disable bash job controll, to prevent message about killed task.
+    set +m
+
+    #Timing parameters
+    nr_iterations=5
+    kill_tries=20
+    echo Running fsstress. | tee -a $seq.full
+
+####################################################
+##    -f unresvsp=0 -f allocsp=0 -f freesp=0 \
+##    -f setxattr=0 -f attr_remove=0 -f attr_set=0 \
+## 
+######################################################
+    mkdir -p $SCRATCH_MNT/fsstress
+    # It is reasonable to disable sync, otherwise most of tasks will simply
+    # stuck in that sync() call.
+    $FSSTRESS_PROG \
+	-d $SCRATCH_MNT/fsstress \
+	-p 100 -f sync=0  -n 9999999 > /dev/null 2>&1 &
+
+    echo Running ENOSPC hitters. | tee -a $seq.full
+    for ((i = 0; i < $nr_iterations; i++))
+    do
+	#Open with O_TRUNC and then write until error
+	#hit ENOSPC each time.
+	dd if=/dev/zero of=$SCRATCH_MNT/BIG_FILE bs=1M 2> /dev/null
+    done
+
+    for ((i = 0; i < $kill_tries; i++))
+    do
+	killall -r -q -TERM fsstress 2> /dev/null
+	sleep 1
+    done
+}
+
+trap "_cleanup ; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+# real QA test starts here
+_supported_fs generic
+_supported_os Linux
+_require_scratch
+
+rm -f $seq.full
+
+umount $TEST_DEV >/dev/null 2>&1
+umount $SCRATCH_DEV >/dev/null 2>&1
+echo "*** MKFS ***"                         >>$seq.full
+echo ""                                     >>$seq.full
+_scratch_mkfs    >/dev/null 2>&1 || _fail "mkfs failed"
+_scratch_mount   >/dev/null 2>&1 || _fail "mount failed"
+
+workout
+umount $SCRATCH_MNT
+echo 
+echo Checking filesystem
+_check_scratch_fs
+status=$?
+exit
diff --git a/227.out b/227.out
new file mode 100644
index 0000000..6a7342d
--- /dev/null
+++ b/227.out
@@ -0,0 +1,5 @@
+QA output created by 227
+Running fsstress.
+Running ENOSPC hitters.
+
+Checking filesystem
diff --git a/group b/group
index 8d4a83a..81a2aa4 100644
--- a/group
+++ b/group
@@ -339,3 +339,4 @@ deprecated
 223 auto quick
 224 auto
 225 auto quick
+227 rw auto prealloc enospc
\ No newline at end of file
-- 
1.6.6