On Mon, Jan 11, 2016 at 03:04:35PM +1100, Dave Chinner wrote: > 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. > Oops, thought I tested that. :/ Thanks. Brian > Cheers, > > Dave. > > -- > Dave Chinner > david@xxxxxxxxxxxxx > -- > 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
