2015-08-04 14:10:44 +10:00
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#! /bin/bash
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# FS QA Test 074-extsz-hints-vs-maxextlen
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#
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# Check some extent size hint boundary conditions that can result in
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# MAXEXTLEN overflows.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2015 Red Hat, Inc. 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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#-----------------------------------------------------------------------
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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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_cleanup()
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{
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cd /
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_destroy_loop_device $LOOP_DEV
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rm -f $tmp.* $LOOP_FILE
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}
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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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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# real QA test starts here
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_supported_fs xfs
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_supported_os Linux
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rm -f $seqres.full
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_require_test
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_require_xfs_io_command "falloc"
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# we use loop devices for this so that we can create large files for prealloc
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# without having to care about the underlying device size.
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_require_loop
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LOOP_FILE=$TEST_DIR/$seq.img
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LOOP_MNT=$TEST_DIR/$seq.mnt
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mkdir -p $LOOP_MNT
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$XFS_IO_PROG -ft -c "truncate 1t" $LOOP_FILE >> $seqres.full
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LOOP_DEV=`_create_loop_device $LOOP_FILE`
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2015-09-21 11:05:44 +10:00
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_mkfs_dev -d size=156452m,agcount=4 -l size=32m $LOOP_DEV
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2015-08-04 14:10:44 +10:00
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_mount $LOOP_DEV $LOOP_MNT
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# Corrupt the BMBT by creating extents larger than MAXEXTLEN
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$XFS_IO_PROG -ft \
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-c "extsize 16m" \
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-c "falloc 0 30g" \
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$LOOP_MNT/foo >> $seqres.full
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umount $LOOP_MNT
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_check_xfs_filesystem $LOOP_DEV none none
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_mkfs_dev -f -l size=32m $LOOP_DEV
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_mount $LOOP_DEV $LOOP_MNT
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# check we trim both ends of the extent approproiately; this will fail
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# on 1k block size filesystems without the correct fixes in place.
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$XFS_IO_PROG -ft \
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-c "extsize 1g" \
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-c "falloc 1023m 2g" \
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$LOOP_MNT/foo >> $seqres.full
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umount $LOOP_MNT
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_check_xfs_filesystem $LOOP_DEV none none
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# success, all done
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echo "Silence is golden"
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status=0
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exit
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