+#! /bin/bash
+# FS QA Test No. 388
+#
+# Test XFS log recovery ordering on v5 superblock filesystems. XFS had a problem
+# where it would incorrectly replay older modifications from the log over more
+# recent versions of metadata due to failure to update metadata LSNs during log
+# recovery. This could result in false positive reports of corruption during log
+# recovery and permanent mount failure.
+#
+# To test this situation, run frequent shutdowns immediately after log recovery.
+# Ensure that log recovery does not recover stale modifications and cause
+# spurious corruption reports and/or mount failures.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016 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 # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+ cd /
+ rm -f $tmp.*
+ $KILLALL_PROG -9 fsstress > /dev/null 2>&1
+ _scratch_unmount > /dev/null 2>&1
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+
+# Modify as appropriate.
+_supported_fs generic
+_supported_os Linux
+
+_require_scratch
+_require_scratch_shutdown
+_require_command "$KILLALL_PROG" "killall"
+
+rm -f $seqres.full
+
+echo "Silence is golden."
+
+_scratch_mkfs >> $seqres.full 2>&1
+_scratch_mount || _fail "mount failed"
+
+for i in $(seq 1 50); do
+ ($FSSTRESS_PROG -d $SCRATCH_MNT -n 999999 -p 4 >> $seqres.full &) \
+ > /dev/null 2>&1
+
+ # purposely include 0 second sleeps to test shutdown immediately after
+ # recovery
+ sleep $((RANDOM % 3))
+ $XFS_IO_PROG -xc shutdown $SCRATCH_MNT
+
+ ps -e | grep fsstress > /dev/null 2>&1
+ while [ $? -eq 0 ]; do
+ $KILLALL_PROG -9 fsstress > /dev/null 2>&1
+ wait > /dev/null 2>&1
+ ps -e | grep fsstress > /dev/null 2>&1
+ done
+
+ # quit if mount fails so we don't shutdown the host fs
+ _scratch_cycle_mount || _fail "cycle mount failed"
+done
+
+# success, all done
+status=0
+exit