Make sure that we can handle multiple bmbt records mapping to a single rmapbt record. This can happen if you fallocate more than 2^21 contiguous blocks to a file. (Also add some helpers that can create huge devices with some dm-zero and dm-snapshot fakery.) v2: remove irrelevant t_immutable changes, put test in correct group Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx> --- common/dmhugedisk | 61 +++++++++++++++++++++++++++ tests/xfs/856 | 119 +++++++++++++++++++++++++++++++++++++++++++++++++++++ tests/xfs/856.out | 13 ++++++ tests/xfs/group | 1 4 files changed, 194 insertions(+) create mode 100644 common/dmhugedisk create mode 100755 tests/xfs/856 create mode 100644 tests/xfs/856.out diff --git a/common/dmhugedisk b/common/dmhugedisk new file mode 100644 index 0000000..9c3c7d5 --- /dev/null +++ b/common/dmhugedisk @@ -0,0 +1,61 @@ +##/bin/bash +# Routines for creating huge (fake) disks +#----------------------------------------------------------------------- +# Copyright (c) 2016 Oracle. 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; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will 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 to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 +# USA +# +# Contact information: Oracle Corporation, 500 Oracle Parkway, +# Redwood Shores, CA 94065, USA, or: http://www.oracle.com/ +#----------------------------------------------------------------------- + +_require_dmhugedisk() +{ + _require_dm_target zero + _require_dm_target snapshot +} + +_dmhugedisk_init() +{ + test -z "$1" && _fatal "must specify sector count to _dmhugedisk_init" + local dm_backing_dev=$SCRATCH_DEV + + $DMSETUP_PROG remove huge-test > /dev/null 2>&1 + $DMSETUP_PROG remove huge-test-zero > /dev/null 2>&1 + + local blk_dev_size=$1 + + DMHUGEDISK_ZERO='/dev/mapper/huge-test-zero' + DMHUGEDISK_DEV='/dev/mapper/huge-test' + + DMHUGEDISK_ZERO_TABLE="0 $blk_dev_size zero" + DMHUGEDISK_DEV_TABLE="0 $blk_dev_size snapshot $DMHUGEDISK_ZERO $SCRATCH_DEV N 512" + + $DMSETUP_PROG create huge-test-zero --table "$DMHUGEDISK_ZERO_TABLE" || \ + _fatal "failed to create dm huge zero device" + $DMSETUP_PROG create huge-test --table "$DMHUGEDISK_DEV_TABLE" || \ + _fatal "failed to create dm huge device" +} + +_dmhugedisk_cleanup() +{ + $UMOUNT_PROG $SCRATCH_MNT > /dev/null 2>&1 + # wait for device to be fully settled so that 'dmsetup remove' doesn't + # fail due to EBUSY + $UDEV_SETTLE_PROG >/dev/null 2>&1 + $DMSETUP_PROG remove huge-test > /dev/null 2>&1 + $DMSETUP_PROG remove huge-test-zero > /dev/null 2>&1 +} + diff --git a/tests/xfs/856 b/tests/xfs/856 new file mode 100755 index 0000000..9186278 --- /dev/null +++ b/tests/xfs/856 @@ -0,0 +1,119 @@ +#! /bin/bash +# FS QA Test No. 856 +# +# Create a file with more than 2^21 extents (the max length of a bmbt record). +# +#----------------------------------------------------------------------- +# Copyright (c) 2016, Oracle and/or its affiliates. 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 / + umount $SCRATCH_MNT > /dev/null 2>&1 + _dmhugedisk_cleanup + rm -rf $tmp.* + _scratch_mkfs >/dev/null 2>&1 +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/dmhugedisk + +# real QA test starts here +_supported_os Linux +_supported_fs xfs +_require_scratch +_require_xfs_io_command "falloc" + +rm -f $seqres.full + +# Figure out block size +echo "Figure out block size" +_scratch_mkfs >/dev/null 2>&1 +_scratch_mount >> $seqres.full + +is_rmap=$(xfs_info $SCRATCH_MNT | grep -c "rmapbt=1") +test $is_rmap -gt 0 || _notrun "rmap not supported on scratch fs" + +testdir=$SCRATCH_MNT/test-$seq +blksz="$(stat -f $SCRATCH_MNT -c '%S')" + +umount $SCRATCH_MNT + +echo "Format huge device" +_dmhugedisk_init $((blksz * 2 * 4400)) # a little over 2^22 blocks +_mkfs_dev -d agcount=2 $DMHUGEDISK_DEV +_mount $DMHUGEDISK_DEV $SCRATCH_MNT +xfs_info $SCRATCH_MNT >> $seqres.full + +echo "Create the original file blocks" +mkdir $testdir +blksz="$(stat -f $testdir -c '%S')" +nr_blks=2100000 # 2^21 plus a little more +$XFS_IO_PROG -f -c "falloc 0 $((nr_blks * blksz))" $testdir/file1 >> $seqres.full + +echo "Check extent count" +xfs_bmap -l -p -v $testdir/file1 | grep '^[[:space:]]*1:' -q && xfs_bmap -l -p -v $testdir/file1 +inum=$(stat -c '%i' $testdir/file1) +umount $SCRATCH_MNT + +echo "Check bmap count" +nr_bmaps=$(xfs_db -c "inode $inum" -c "bmap" $DMHUGEDISK_DEV | grep 'data offset' | wc -l) +test $nr_bmaps -gt 1 || xfs_db -c "inode $inum" -c "bmap" $DMHUGEDISK_DEV +#xfs_db -c "agf 0" -c p -c "inode $inum" -c "bmap" $DMHUGEDISK_DEV + +echo "Check rmap count" +nr_rmaps=$(xfs_db -c 'agf 0' -c 'addr rmaproot' -c 'p' $DMHUGEDISK_DEV | grep ",$inum,[0-9]*,1,0,0" | wc -l) +test $nr_rmaps -eq 1 || xfs_db -c 'agf 0' -c 'addr rmaproot' -c 'p' $DMHUGEDISK_DEV | grep ",$inum,[0-9]*,1,0,0" + +echo "Check and fake-repair huge filesystem" | tee -a $seqres.full +$XFS_DB_PROG -c 'check' $DMHUGEDISK_DEV +$XFS_REPAIR_PROG -n $DMHUGEDISK_DEV >> $seqres.full 2>&1 +test $? -eq 0 || echo "xfs_repair -n failed, see $seqres.full" + +echo "Real repair huge filesystem" | tee -a $seqres.full +$XFS_REPAIR_PROG $DMHUGEDISK_DEV >> $seqres.full 2>&1 +test $? -eq 0 || echo "xfs_repair failed, see $seqres.full" + +echo "Check bmap count again" +nr_bmaps=$(xfs_db -c "inode $inum" -c "bmap" $DMHUGEDISK_DEV | grep 'data offset' | wc -l) +test $nr_bmaps -gt 1 || xfs_db -c "inode $inum" -c "bmap" $DMHUGEDISK_DEV + +echo "Check rmap count again" +nr_rmaps=$(xfs_db -c 'agf 0' -c 'addr rmaproot' -c 'p' $DMHUGEDISK_DEV | grep ",$inum,[0-9]*,1,0,0" | wc -l) +test $nr_rmaps -eq 1 || xfs_db -c 'agf 0' -c 'addr rmaproot' -c 'p' $DMHUGEDISK_DEV | grep ",$inum,[0-9]*,1,0,0" + +echo "Check and fake-repair huge filesystem again" | tee -a $seqres.full +$XFS_DB_PROG -c 'check' $DMHUGEDISK_DEV +$XFS_REPAIR_PROG -n $DMHUGEDISK_DEV >> $seqres.full 2>&1 +_dmhugedisk_cleanup + +echo "Done" + +# success, all done +status=0 +exit diff --git a/tests/xfs/856.out b/tests/xfs/856.out new file mode 100644 index 0000000..b24ebf2 --- /dev/null +++ b/tests/xfs/856.out @@ -0,0 +1,13 @@ +QA output created by 856 +Figure out block size +Format huge device +Create the original file blocks +Check extent count +Check bmap count +Check rmap count +Check and fake-repair huge filesystem +Real repair huge filesystem +Check bmap count again +Check rmap count again +Check and fake-repair huge filesystem again +Done diff --git a/tests/xfs/group b/tests/xfs/group index f0ca410..6ff24d9 100644 --- a/tests/xfs/group +++ b/tests/xfs/group @@ -288,3 +288,4 @@ 853 auto quick clone 854 auto quick clone 855 auto clone +856 auto clone rmap _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
