On 2.06.2017 11:23, Omar Sandoval wrote: > From: Omar Sandoval <osandov@xxxxxx> > > This is a regression test for "[PATCH] Btrfs: fix delalloc accounting > leak caused by u32 overflow". It creates a bunch of delalloc extents and > merges them together to make sure the accounting is done right. > > Signed-off-by: Omar Sandoval <osandov@xxxxxx> > --- > tests/generic/438 | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++ > tests/generic/438.out | 2 ++ > tests/generic/group | 1 + > 3 files changed, 80 insertions(+) > create mode 100755 tests/generic/438 > create mode 100644 tests/generic/438.out > > diff --git a/tests/generic/438 b/tests/generic/438 > new file mode 100755 > index 00000000..8edac03d > --- /dev/null > +++ b/tests/generic/438 > @@ -0,0 +1,77 @@ > +#! /bin/bash > +# FS QA Test 438 > +# > +# Test delayed allocation with a large number of extents that are merged. > +# Regression test for patch "Btrfs: fix delalloc accounting leak caused by u32 > +# overflow". > +# > +#----------------------------------------------------------------------- > +# Copyright (c) 2017 Facebook. 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 > + > +test_file="$TEST_DIR/$seq" > + > +_cleanup() > +{ > + cd / > + rm -f $tmp.* "$test_file" > +} > + > +. ./common/rc > +. ./common/filter > + > +rm -f $seqres.full > + > +_supported_fs generic > +_supported_os Linux > +_require_test > + > +# Create 32k extents. All of these extents will be accounted as outstanding and > +# reserved. > +for ((i = 0; i < 32 * 1024; i++)); do > + xfs_io -f -c "pwrite $((2 * 4096 * i)) 4096" "$test_file" >>"$seqres.full" > +done > + > +# Fill in the gaps between the created extents. The outstanding extents will > +# all be merged into 1, but there will still be 32k reserved. > +for ((i = 0; i < 32 * 1024; i++)); do > + xfs_io -f -c "pwrite $((2 * 4096 * i + 1)) 4096" "$test_file" >>"$seqres.full" > +done > + > +# Flush the delayed allocations. > +sync > + > +# Make sure that we didn't leak any metadata space. > +if [[ $FSTYP = btrfs ]]; then > + uuid="$(findmnt -n -o UUID "$TEST_DIR")" if we are on btrfs and we don't have findmnt this test will likely fail. Perhaps include a _require_command findmnt > + cd "/sys/fs/btrfs/$uuid/allocation" > + echo "$(($(cat metadata/bytes_may_use) - $(cat global_rsv_reserved))) bytes leaked" | grep -v '^0 ' > +fi > + > +echo "Silence is golden" > + > +status=0 > +exit > diff --git a/tests/generic/438.out b/tests/generic/438.out > new file mode 100644 > index 00000000..4968f4d7 > --- /dev/null > +++ b/tests/generic/438.out > @@ -0,0 +1,2 @@ > +QA output created by 438 > +Silence is golden > diff --git a/tests/generic/group b/tests/generic/group > index 438c2990..c804b05d 100644 > --- a/tests/generic/group > +++ b/tests/generic/group > @@ -440,3 +440,4 @@ > 435 auto encrypt > 436 auto quick rw > 437 auto quick > +438 auto > -- 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