mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
xfs: recover copy-on-write leftover
Test recovery of CoW leftovers in xfs_repair. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Eryu Guan <eguan@redhat.com>
This commit is contained in:
Darrick J. Wong
committed by
Eryu Guan
Eryu Guan
parent
478f75b0d0
commit
b1e1b5fc8e
Executable
+179
@@ -0,0 +1,179 @@
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#! /bin/bash
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# FS QA Test No. 307
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#
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# Test recovery of "lost" CoW blocks:
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# - Use the debugger to fake a leftover CoW extent
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# - See if xfs_repair fixes it
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2016, Oracle and/or its affiliates. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -rf $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/reflink
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# real QA test starts here
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_supported_os Linux
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_supported_fs xfs
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_require_scratch_reflink
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rm -f $seqres.full
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echo "Format"
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_scratch_mkfs > $seqres.full 2>&1
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_scratch_mount >> $seqres.full
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is_rmap=$(xfs_info $SCRATCH_MNT | grep -c "rmapbt=1")
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_scratch_unmount
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_get_agf_data() {
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field="$1"
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shift
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xfs_db -c 'agf 1' "$@" -c "p $field" $SCRATCH_DEV | awk '{print $3}'
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}
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_set_agf_data() {
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field="$1"
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value="$2"
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shift; shift
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xfs_db -x -c 'agf 1' "$@" -c "write $field -- $value" $SCRATCH_DEV >> $seqres.full
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}
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_get_sb_data() {
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field="$1"
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shift
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xfs_db -c 'sb 0' "$@" -c "p $field" $SCRATCH_DEV | awk '{print $3}'
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}
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_set_sb_data() {
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field="$1"
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value="$2"
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shift; shift
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xfs_db -x -c 'sb 0' "$@" -c "write $field -- $value" $SCRATCH_DEV >> $seqres.full
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}
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_filter_leftover() {
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grep "^leftover" | sed -e "s/[0-9]\+/NR/g"
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}
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_dump_status() {
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echo "** " "$@"
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xfs_db -c 'sb 0' -c p $SCRATCH_DEV
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echo "** agf header"
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xfs_db -c 'agf 1' -c p $SCRATCH_DEV
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echo "** refcntbt"
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xfs_db -c 'agf 1' -c 'addr refcntroot' -c p $SCRATCH_DEV
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echo "** rmapbt"
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test $is_rmap -gt 0 && xfs_db -c 'agf 1' -c 'addr rmaproot' -c p $SCRATCH_DEV
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echo "** bnobt"
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xfs_db -c 'agf 1' -c 'addr bnoroot' -c p $SCRATCH_DEV
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echo "** cntbt"
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xfs_db -c 'agf 1' -c 'addr cntroot' -c p $SCRATCH_DEV
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}
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echo "We need AG1 to have a single free extent"
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bno_lvl=$(_get_agf_data level -c 'addr bnoroot')
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bno_nr=$(_get_agf_data numrecs -c 'addr bnoroot')
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refc_lvl=$(_get_agf_data level -c 'addr refcntroot')
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refc_nr=$(_get_agf_data numrecs -c 'addr refcntroot')
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test $bno_lvl -eq 0 || echo " AG 1 bnobt must only have one level"
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test $bno_nr -eq 1 || echo " AG 1 bnobt must only have one record"
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test $refc_lvl -eq 0 || echo " AG 1 refcountbt must only have one level"
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test $refc_nr -eq 0 || echo " AG 1 refcountbt must only have one record"
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if [ $is_rmap -gt 0 ]; then
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rmap_lvl=$(_get_agf_data level -c 'addr rmaproot')
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rmap_nr=$(_get_agf_data numrecs -c 'addr rmaproot')
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test $rmap_lvl -eq 0 || echo " AG 1 rmapbt must only have one level"
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fi
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echo "Find our extent and old counter values"
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bno=$(_get_agf_data "recs[1].startblock" -c 'addr bnoroot')
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len=$(_get_agf_data "recs[1].blockcount" -c 'addr bnoroot')
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agf_freeblks=$(_get_agf_data freeblks)
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sb_fdblocks=$(_get_sb_data fdblocks)
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test $len -ge 200 || echo " AG 1 doesn't have enough free blocks"
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# Take the last 100 blocks of the free extent
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debris_len=100
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debris_bno=$((bno + len - debris_len))
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echo "Remove the extent from the freesp btrees"
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_set_agf_data "recs[1].blockcount" $((len - debris_len)) -c 'addr bnoroot'
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_set_agf_data "recs[1].blockcount" $((len - debris_len)) -c 'addr cntroot'
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_set_agf_data freeblks $((agf_freeblks - debris_len))
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_set_agf_data longest $((len - debris_len))
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_set_sb_data fdblocks $((sb_fdblocks - debris_len))
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echo "Add the extent to the refcount btree"
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_set_agf_data numrecs 1 -c 'addr refcntroot'
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_set_agf_data "recs[1].startblock" $debris_bno -c 'addr refcntroot'
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_set_agf_data "recs[1].blockcount" $debris_len -c 'addr refcntroot'
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_set_agf_data "recs[1].refcount" 1 -c 'addr refcntroot'
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if [ $is_rmap -gt 0 ]; then
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rmap_nr=$((rmap_nr + 1))
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_set_agf_data numrecs $rmap_nr -c 'addr rmaproot'
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_set_agf_data "recs[$rmap_nr].startblock" $debris_bno -c 'addr rmaproot'
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_set_agf_data "recs[$rmap_nr].blockcount" $debris_len -c 'addr rmaproot'
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_set_agf_data "recs[$rmap_nr].owner" -9 -c 'addr rmaproot'
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_set_agf_data "recs[$rmap_nr].offset" 0 -c 'addr rmaproot'
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fi
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_dump_status "broken fs config" >> $seqres.full
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echo "Look for leftover warning in xfs_check"
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_scratch_xfs_check | _filter_leftover
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echo "Look for leftover warning in xfs_repair"
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_scratch_xfs_repair -n 2>&1 | _filter_leftover
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echo "Fix filesystem"
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_scratch_xfs_repair >> $seqres.full 2>&1 || echo "xfs_repair failed?"
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_dump_status "supposedly fixed fs config" >> $seqres.full
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echo "Look for no more leftover warning in xfs_check"
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_scratch_xfs_check | _filter_leftover
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echo "Look for no more leftover warning in xfs_repair"
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_scratch_xfs_repair -n 2>&1 | _filter_leftover
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# success, all done
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status=0
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exit
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@@ -0,0 +1,13 @@
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QA output created by 307
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Format
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We need AG1 to have a single free extent
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Find our extent and old counter values
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Remove the extent from the freesp btrees
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Add the extent to the refcount btree
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Look for leftover warning in xfs_check
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leftover CoW extent (NR/NR) len NR
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Look for leftover warning in xfs_repair
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leftover CoW extent (NR/NR) len NR
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Fix filesystem
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Look for no more leftover warning in xfs_check
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Look for no more leftover warning in xfs_repair
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Executable
+180
@@ -0,0 +1,180 @@
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#! /bin/bash
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# FS QA Test No. 308
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#
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# Test recovery of "lost" CoW blocks:
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# - Use the debugger to fake a leftover CoW extent
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# - See if mount/umount fixes it
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2016, Oracle and/or its affiliates. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -rf $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/reflink
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# real QA test starts here
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_supported_os Linux
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_supported_fs xfs
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_require_scratch_reflink
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rm -f $seqres.full
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echo "Format"
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_scratch_mkfs > $seqres.full 2>&1
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_scratch_mount >> $seqres.full
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is_rmap=$(xfs_info $SCRATCH_MNT | grep -c "rmapbt=1")
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_scratch_unmount
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_get_agf_data() {
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field="$1"
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shift
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xfs_db -c 'agf 1' "$@" -c "p $field" $SCRATCH_DEV | awk '{print $3}'
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}
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_set_agf_data() {
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field="$1"
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value="$2"
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shift; shift
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xfs_db -x -c 'agf 1' "$@" -c "write $field -- $value" $SCRATCH_DEV >> $seqres.full
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}
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_get_sb_data() {
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field="$1"
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shift
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xfs_db -c 'sb 0' "$@" -c "p $field" $SCRATCH_DEV | awk '{print $3}'
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}
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_set_sb_data() {
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field="$1"
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value="$2"
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shift; shift
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xfs_db -x -c 'sb 0' "$@" -c "write $field -- $value" $SCRATCH_DEV >> $seqres.full
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}
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_filter_leftover() {
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grep "^leftover" | sed -e "s/[0-9]\+/NR/g"
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}
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_dump_status() {
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echo "** " "$@"
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xfs_db -c 'sb 0' -c p $SCRATCH_DEV
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echo "** agf header"
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xfs_db -c 'agf 1' -c p $SCRATCH_DEV
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echo "** refcntbt"
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xfs_db -c 'agf 1' -c 'addr refcntroot' -c p $SCRATCH_DEV
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echo "** rmapbt"
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test $is_rmap -gt 0 && xfs_db -c 'agf 1' -c 'addr rmaproot' -c p $SCRATCH_DEV
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echo "** bnobt"
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xfs_db -c 'agf 1' -c 'addr bnoroot' -c p $SCRATCH_DEV
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echo "** cntbt"
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xfs_db -c 'agf 1' -c 'addr cntroot' -c p $SCRATCH_DEV
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}
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echo "We need AG1 to have a single free extent"
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bno_lvl=$(_get_agf_data level -c 'addr bnoroot')
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bno_nr=$(_get_agf_data numrecs -c 'addr bnoroot')
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refc_lvl=$(_get_agf_data level -c 'addr refcntroot')
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refc_nr=$(_get_agf_data numrecs -c 'addr refcntroot')
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test $bno_lvl -eq 0 || echo " AG 1 bnobt must only have one level"
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test $bno_nr -eq 1 || echo " AG 1 bnobt must only have one record"
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test $refc_lvl -eq 0 || echo " AG 1 refcountbt must only have one level"
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test $refc_nr -eq 0 || echo " AG 1 refcountbt must only have one record"
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if [ $is_rmap -gt 0 ]; then
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rmap_lvl=$(_get_agf_data level -c 'addr rmaproot')
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rmap_nr=$(_get_agf_data numrecs -c 'addr rmaproot')
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test $rmap_lvl -eq 0 || echo " AG 1 rmapbt must only have one level"
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fi
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echo "Find our extent and old counter values"
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bno=$(_get_agf_data "recs[1].startblock" -c 'addr bnoroot')
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len=$(_get_agf_data "recs[1].blockcount" -c 'addr bnoroot')
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agf_freeblks=$(_get_agf_data freeblks)
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sb_fdblocks=$(_get_sb_data fdblocks)
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test $len -ge 200 || echo " AG 1 doesn't have enough free blocks"
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# Take the last 100 blocks of the free extent
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debris_len=100
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debris_bno=$((bno + len - debris_len))
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echo "Remove the extent from the freesp btrees"
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_set_agf_data "recs[1].blockcount" $((len - debris_len)) -c 'addr bnoroot'
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_set_agf_data "recs[1].blockcount" $((len - debris_len)) -c 'addr cntroot'
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_set_agf_data freeblks $((agf_freeblks - debris_len))
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_set_agf_data longest $((len - debris_len))
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_set_sb_data fdblocks $((sb_fdblocks - debris_len))
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echo "Add the extent to the refcount btree"
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_set_agf_data numrecs 1 -c 'addr refcntroot'
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_set_agf_data "recs[1].startblock" $debris_bno -c 'addr refcntroot'
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_set_agf_data "recs[1].blockcount" $debris_len -c 'addr refcntroot'
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_set_agf_data "recs[1].refcount" 1 -c 'addr refcntroot'
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if [ $is_rmap -gt 0 ]; then
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rmap_nr=$((rmap_nr + 1))
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_set_agf_data numrecs $rmap_nr -c 'addr rmaproot'
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_set_agf_data "recs[$rmap_nr].startblock" $debris_bno -c 'addr rmaproot'
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_set_agf_data "recs[$rmap_nr].blockcount" $debris_len -c 'addr rmaproot'
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_set_agf_data "recs[$rmap_nr].owner" -9 -c 'addr rmaproot'
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_set_agf_data "recs[$rmap_nr].offset" 0 -c 'addr rmaproot'
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fi
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_dump_status "broken fs config" >> $seqres.full
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echo "Look for leftover warning in xfs_check"
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_scratch_xfs_check | _filter_leftover
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echo "Look for leftover warning in xfs_repair"
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_scratch_xfs_repair -n 2>&1 | _filter_leftover
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echo "Mount filesystem"
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_scratch_mount
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_scratch_unmount
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_dump_status "supposedly fixed fs config" >> $seqres.full
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echo "Look for no more leftover warning in xfs_check"
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_scratch_xfs_check | _filter_leftover
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echo "Look for no more leftover warning in xfs_repair"
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_scratch_xfs_repair -n 2>&1 | _filter_leftover
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# success, all done
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status=0
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exit
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@@ -0,0 +1,13 @@
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QA output created by 308
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Format
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We need AG1 to have a single free extent
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Find our extent and old counter values
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Remove the extent from the freesp btrees
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Add the extent to the refcount btree
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Look for leftover warning in xfs_check
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leftover CoW extent (NR/NR) len NR
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Look for leftover warning in xfs_repair
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leftover CoW extent (NR/NR) len NR
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Mount filesystem
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Look for no more leftover warning in xfs_check
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Look for no more leftover warning in xfs_repair
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@@ -286,3 +286,5 @@
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304 auto quick quota
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305 auto quota
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306 auto dangerous quick
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307 auto quick clone
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308 auto quick clone
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Block a user