From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.kernel.org ([198.145.29.136]:51468 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753260AbcKQSEk (ORCPT ); Thu, 17 Nov 2016 13:04:40 -0500 Date: Thu, 17 Nov 2016 10:04:36 -0800 From: Jaegeuk Kim Subject: Re: [PATCH v2] generic/392: add a testcase to check some inline truncation behaviors Message-ID: <20161117180436.GB74211@jaegeuk> References: <20161117034715.71966-1-jaegeuk@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20161117034715.71966-1-jaegeuk@kernel.org> Sender: fstests-owner@vger.kernel.org To: fstests@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net List-ID: 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 --- tests/generic/392 | 128 ++++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/392.out | 45 ++++++++++++++++++ tests/generic/group | 1 + 3 files changed, 174 insertions(+) create mode 100644 tests/generic/392 create mode 100644 tests/generic/392.out diff --git a/tests/generic/392 b/tests/generic/392 new file mode 100644 index 0000000..c45018a --- /dev/null +++ b/tests/generic/392 @@ -0,0 +1,128 @@ +#! /bin/bash +# FS QA Test No. generic/392 +# +# 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. +# +#----------------------------------------------------------------------- +# Copyright (c) 2014 Jaegeuk Kim. 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 / + rm -f $tmp.* +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter + +_supported_fs generic +_supported_os Linux +_require_scratch + +testfile=$SCRATCH_MNT/testfile +OD_CMD="od -A x -t x1z" + +_scratch_mkfs > /dev/null 2>&1 +_scratch_mount + +# 1. make a file containing inline_data. +# 2. "truncated 0" is to check cached page #0 was truncated entirely. +# 3. "truncated 50" is to check inline_data was truncated within its inode. +$XFS_IO_PROG -t -f \ + -c "pwrite -S 0x58 0 40" `# write |XXXXXXXXXXXXXXXXXXXXXXXX|` \ + -c "fsync" \ + -c "truncate 0" `# truncate | |` \ + -c "truncate 50" `# truncate | |` \ +$testfile | _filter_xfs_io + +echo "= truncate inline_data after #0 page was truncated entirely =" +$OD_CMD $testfile +_scratch_remount +$OD_CMD $testfile +rm $testfile + +# 1. make a file containing inline_data. +# 2. "truncated 0" is to check cached page #0 was truncated entirely. +# 3. "truncated 4096" is to check inline_data was dismissed and truncated. +$XFS_IO_PROG -t -f \ + -c "pwrite -S 0x58 0 40" `# write |XXXXXXXXXXXXXXXXXXXXXXXX|` \ + -c "fsync" \ + -c "truncate 0" `# truncate | |` \ + -c "truncate 4096" `# truncate | |` \ +$testfile | _filter_xfs_io + +echo "= truncate dismissed inline_data after #0 page was truncated entirely =" +$OD_CMD $testfile +_scratch_remount +$OD_CMD $testfile +rm $testfile + +# 1. make a file containing inline_data. +# 2. "truncated 4" is to check cached page #0 was truncated partially. +# 3. "truncated 50" is to check inline_data was truncated within its inode. +$XFS_IO_PROG -t -f \ + -c "pwrite -S 0x58 0 40" `# write |XXXXXXXXXXXXXXXXXXXXXXXX|` \ + -c "fsync" \ + -c "truncate 4" `# truncate |XXXX |` \ + -c "truncate 50" `# truncate |XXXX |` \ +$testfile | _filter_xfs_io + +echo "= truncate inline_data after #0 page was truncated partially =" +$OD_CMD $testfile +_scratch_remount +$OD_CMD $testfile +rm $testfile + +# 1. make a file containing inline_data. +# 2. "truncated 4" is to check cached page #0 was truncated partially. +# 3. "truncated 4096" is to check inline_data was dismissed and truncated. +$XFS_IO_PROG -t -f \ + -c "pwrite -S 0x58 0 40" `# write |XXXXXXXXXXXXXXXXXXXXXXXX|` \ + -c "fsync" \ + -c "truncate 4" `# truncate |XXXX |` \ + -c "truncate 4096" `# truncate |XXXX |` \ +$testfile | _filter_xfs_io + +echo "= truncate dismissed inline_data after #0 page was truncated partially =" +$OD_CMD $testfile +_scratch_remount +$OD_CMD $testfile +rm $testfile + +status=0 +exit diff --git a/tests/generic/392.out b/tests/generic/392.out new file mode 100644 index 0000000..2050cb5 --- /dev/null +++ b/tests/generic/392.out @@ -0,0 +1,45 @@ +QA output created by 392 +wrote 40/40 bytes at offset 0 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) += truncate inline_data after #0 page was truncated entirely = +000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................< +* +000030 00 00 >..< +000032 +000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................< +* +000030 00 00 >..< +000032 +wrote 40/40 bytes at offset 0 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) += truncate dismissed inline_data after #0 page was truncated entirely = +000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................< +* +001000 +000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................< +* +001000 +wrote 40/40 bytes at offset 0 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) += truncate inline_data after #0 page was truncated partially = +000000 58 58 58 58 00 00 00 00 00 00 00 00 00 00 00 00 >XXXX............< +000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................< +* +000030 00 00 >..< +000032 +000000 58 58 58 58 00 00 00 00 00 00 00 00 00 00 00 00 >XXXX............< +000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................< +* +000030 00 00 >..< +000032 +wrote 40/40 bytes at offset 0 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) += truncate dismissed inline_data after #0 page was truncated partially = +000000 58 58 58 58 00 00 00 00 00 00 00 00 00 00 00 00 >XXXX............< +000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................< +* +001000 +000000 58 58 58 58 00 00 00 00 00 00 00 00 00 00 00 00 >XXXX............< +000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................< +* +001000 diff --git a/tests/generic/group b/tests/generic/group index 9de3415..1b19010 100644 --- a/tests/generic/group +++ b/tests/generic/group @@ -393,3 +393,4 @@ 388 auto log metadata 389 auto quick acl 391 auto quick metadata +392 auto quick rw -- 2.8.3