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generic: check some inline truncation behaviors
This patch introduces a new testcase to test some small truncations to check inline_data and its cached data are truncated correctly at the same time. The inline_data feature was introduced in ext4 and f2fs as follows. ext4 : http://lwn.net/Articles/468678/ f2fs : http://lwn.net/Articles/573408/ The basic idea is embedding small-sized file's data into relatively large inode space. In ext4, up to 132 bytes of data can be stored in 256 bytes-sized inode. In f2fs, up to 3.4KB of data can be embedded into 4KB-sized inode block. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> Reviewed-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Eryu Guan <eguan@redhat.com>
This commit is contained in:
Jaegeuk Kim
Eryu Guan
Executable
+128
@@ -0,0 +1,128 @@
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#! /bin/bash
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# FS QA Test No. generic/393
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#
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# Test some small truncations to check inline_data and its cached data are
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# truncated correctly at the same time.
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#
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# The inline_data feature was introduced in ext4 and f2fs as follows.
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# ext4 : http://lwn.net/Articles/468678/
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# f2fs : http://lwn.net/Articles/573408/
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#
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# The basic idea is embedding small-sized file's data into relatively large
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# inode space.
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# In ext4, up to 132 bytes of data can be stored in 256 bytes-sized inode.
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# In f2fs, up to 3.4KB of data can be embedded into 4KB-sized inode block.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2014 Jaegeuk Kim. 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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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 -f $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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_supported_fs generic
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_supported_os Linux
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_require_scratch
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testfile=$SCRATCH_MNT/testfile
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OD_CMD="od -A x -t x1z"
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_scratch_mkfs > /dev/null 2>&1
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_scratch_mount
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# 1. make a file containing inline_data.
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# 2. "truncated 0" is to check cached page #0 was truncated entirely.
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# 3. "truncated 50" is to check inline_data was truncated within its inode.
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$XFS_IO_PROG -t -f \
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-c "pwrite -S 0x58 0 40" `# write |XXXXXXXXXXXXXXXXXXXXXXXX|` \
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-c "fsync" \
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-c "truncate 0" `# truncate | |` \
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-c "truncate 50" `# truncate | |` \
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$testfile | _filter_xfs_io
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echo "= truncate inline_data after #0 page was truncated entirely ="
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$OD_CMD $testfile
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_scratch_cycle_mount
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$OD_CMD $testfile
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rm $testfile
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# 1. make a file containing inline_data.
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# 2. "truncated 0" is to check cached page #0 was truncated entirely.
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# 3. "truncated 4096" is to check inline_data was dismissed and truncated.
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$XFS_IO_PROG -t -f \
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-c "pwrite -S 0x58 0 40" `# write |XXXXXXXXXXXXXXXXXXXXXXXX|` \
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-c "fsync" \
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-c "truncate 0" `# truncate | |` \
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-c "truncate 4096" `# truncate | |` \
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$testfile | _filter_xfs_io
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echo "= truncate dismissed inline_data after #0 page was truncated entirely ="
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$OD_CMD $testfile
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_scratch_cycle_mount
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$OD_CMD $testfile
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rm $testfile
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# 1. make a file containing inline_data.
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# 2. "truncated 4" is to check cached page #0 was truncated partially.
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# 3. "truncated 50" is to check inline_data was truncated within its inode.
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$XFS_IO_PROG -t -f \
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-c "pwrite -S 0x58 0 40" `# write |XXXXXXXXXXXXXXXXXXXXXXXX|` \
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-c "fsync" \
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-c "truncate 4" `# truncate |XXXX |` \
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-c "truncate 50" `# truncate |XXXX |` \
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$testfile | _filter_xfs_io
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echo "= truncate inline_data after #0 page was truncated partially ="
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$OD_CMD $testfile
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_scratch_cycle_mount
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$OD_CMD $testfile
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rm $testfile
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# 1. make a file containing inline_data.
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# 2. "truncated 4" is to check cached page #0 was truncated partially.
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# 3. "truncated 4096" is to check inline_data was dismissed and truncated.
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$XFS_IO_PROG -t -f \
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-c "pwrite -S 0x58 0 40" `# write |XXXXXXXXXXXXXXXXXXXXXXXX|` \
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-c "fsync" \
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-c "truncate 4" `# truncate |XXXX |` \
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-c "truncate 4096" `# truncate |XXXX |` \
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$testfile | _filter_xfs_io
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echo "= truncate dismissed inline_data after #0 page was truncated partially ="
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$OD_CMD $testfile
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_scratch_cycle_mount
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$OD_CMD $testfile
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rm $testfile
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status=0
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exit
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@@ -0,0 +1,45 @@
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QA output created by 393
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wrote 40/40 bytes at offset 0
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XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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= truncate inline_data after #0 page was truncated entirely =
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000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................<
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*
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000030 00 00 >..<
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000032
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000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................<
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*
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000030 00 00 >..<
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000032
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wrote 40/40 bytes at offset 0
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XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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= truncate dismissed inline_data after #0 page was truncated entirely =
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000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................<
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*
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001000
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000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................<
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*
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001000
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wrote 40/40 bytes at offset 0
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XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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= truncate inline_data after #0 page was truncated partially =
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000000 58 58 58 58 00 00 00 00 00 00 00 00 00 00 00 00 >XXXX............<
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000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................<
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*
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000030 00 00 >..<
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000032
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000000 58 58 58 58 00 00 00 00 00 00 00 00 00 00 00 00 >XXXX............<
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000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................<
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*
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000030 00 00 >..<
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000032
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wrote 40/40 bytes at offset 0
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XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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= truncate dismissed inline_data after #0 page was truncated partially =
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000000 58 58 58 58 00 00 00 00 00 00 00 00 00 00 00 00 >XXXX............<
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000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................<
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*
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001000
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000000 58 58 58 58 00 00 00 00 00 00 00 00 00 00 00 00 >XXXX............<
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000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................<
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*
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001000
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@@ -395,3 +395,4 @@
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390 auto freeze stress dangerous
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391 auto quick rw
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392 auto quick metadata
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393 auto quick rw
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