On Mon, Aug 15, 2016 at 08:56:26AM -0400, Brian Foster wrote: > XFS had a bug that lead to a possible out-of-order log recovery > situation (e.g., replay a stale modification from the log over more > recent metadata in destination buffer). This resulted in false > corruption reports during log recovery and thus mount failure. > > This condition is caused by system crash or filesystem shutdown shortly > after a successful log recovery. Add a test to run a combined workload, > fs shutdown and log recovery loop known to reproduce the problem on > affected kernels. > > Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx> > --- > ping > v3: > - More generic test fixups. > v2: http://marc.info/?l=linux-xfs&m=147126275528704&w=2 > - Use $KILLALL_PROG for killall command. > - Convert to generic test. > v1: http://marc.info/?l=linux-xfs&m=147100402211629&w=2 > > tests/generic/999 | 89 +++++++++++++++++++++++++++++++++++++++++++++++++++ > tests/generic/999.out | 2 ++ > tests/generic/group | 1 + > 3 files changed, 92 insertions(+) > create mode 100755 tests/generic/999 > create mode 100644 tests/generic/999.out > > diff --git a/tests/generic/999 b/tests/generic/999 > new file mode 100755 > index 0000000..57bb39c > --- /dev/null > +++ b/tests/generic/999 > @@ -0,0 +1,89 @@ > +#! /bin/bash > +# FS QA Test No. 999 > +# > +# 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" > + > +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 > diff --git a/tests/generic/999.out b/tests/generic/999.out > new file mode 100644 > index 0000000..d254382 > --- /dev/null > +++ b/tests/generic/999.out > @@ -0,0 +1,2 @@ > +QA output created by 999 > +Silence is golden. > diff --git a/tests/generic/group b/tests/generic/group > index 4acae99..605a244 100644 > --- a/tests/generic/group > +++ b/tests/generic/group > @@ -375,3 +375,4 @@ > 370 auto quick richacl > 371 auto quick enospc prealloc > 372 auto quick clone > +999 auto log metadata > -- > 2.5.5 > > -- > To unsubscribe from this list: send the line "unsubscribe fstests" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
