On Mon, Jan 04, 2016 at 11:03:41AM -0500, Brian Foster wrote: > XFS torn log write detection includes a mechanism to inject CRC errors > into log records at runtime and shutdown the fs accordingly. This > ensures that the CRC verification pass on the subsequent mount discovers > an invalid record near the head of the log and considers it a torn > write. > > This test runs a workload with error injection enabled and verifies that > the subsequent mount is successful. The test repeats for several > iterations using a random frequency factor for the error event each > time. > > Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx> > --- > > Here's a v2 of the XFS log crc verification test case now that the > associated kernel code has been merged. The only change is the bugfix > noted in the changelog below. > > Brian > > v2: > - Update random failure frequency calculation to ensure factor is never > 0. > v1: http://article.gmane.org/gmane.comp.file-systems.fstests/1406 > > tests/xfs/350 | 85 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ > tests/xfs/350.out | 2 ++ > tests/xfs/group | 1 + > 3 files changed, 88 insertions(+) > create mode 100755 tests/xfs/350 > create mode 100644 tests/xfs/350.out > > diff --git a/tests/xfs/350 b/tests/xfs/350 > new file mode 100755 > index 0000000..1a1de6f > --- /dev/null > +++ b/tests/xfs/350 > @@ -0,0 +1,85 @@ > +#! /bin/bash > +# FS QA Test No. 350 > +# > +# Use the XFS log record CRC error injection mechanism to test torn writes to > +# the log. The error injection mechanism writes an invalid CRC and shuts down > +# the filesystem. The test verifies that a subsequent remount recovers the log > +# and that the filesystem is consistent. > +# > +# Note that this test requires a DEBUG mode kernel. > +# > +#----------------------------------------------------------------------- > +# Copyright (c) 2015 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 -9 fsstress > /dev/null 2>&1 > + wait > /dev/null 2>&1 > +} > + > +rm -f $seqres.full > + > +# get standard environment, filters and checks > +. ./common/rc > + > +# real QA test starts here > + > +# Modify as appropriate. > +_supported_fs xfs > +_supported_os Linux > +_require_xfs_sysfs $(_short_dev $SCRATCH_DEV)/log/log_badcrc_factor Scratch is not mounted at this point, so I don't think you can test the scratch device sysfs attrs here. I changed it to look at the test device instead and it works fine. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
