Inspired by syncfs bug of overlayfs which does not sync dirtyinodes in
underlying filesystem.
Run syncfs and shutdown filesystem(or underlying filesystem of overlayfs)
to check syncfs result.
Signed-off-by: Chengguang Xu <cgxu519@xxxxxxxxxx>
---
Changes since v2:
1. Modify multiple test files to single small test file.
2. Use fssum to check result instead of diff.
3. Add comment for why running sync before test.
4. Add option explanation of fssum.
Changes since v1:
Use fs shutdown and fssum to check syncfs result instead of
checking delalloc state of extents.
tests/generic/470 | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++
tests/generic/470.out | 2 +
tests/generic/group | 1 +
3 files changed, 105 insertions(+)
create mode 100755 tests/generic/470
create mode 100644 tests/generic/470.out
diff --git a/tests/generic/470 b/tests/generic/470
new file mode 100755
index 0000000..9d6c37a
--- /dev/null
+++ b/tests/generic/470
@@ -0,0 +1,102 @@
+#! /bin/bash
+# FS QA Test 470
+#
+# Inspired by syncfs bug of overlayfs which does not sync dirty inodes in
+# underlying filesystem.
+#
+# Create a small file then run syncfs and shutdown filesystem(or underlying
+# filesystem of overlayfs) to check syncfs result.
+#
+# Test will be skipped if filesystem(or underlying filesystem of overlayfs)
+# does not support shutdown.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2017 Chengguang Xu <cgxu519@xxxxxxxxxx>
+# 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
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+ cd /
+ rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+_supported_fs generic
+_supported_os Linux
+_require_fssum
+_require_scratch
+_require_scratch_shutdown
+_require_xfs_io_command "syncfs"
+
+_scratch_mkfs >/dev/null 2>&1
+_scratch_mount
+
+# Background writeback will flush dirty inode by dirty ratio and dirty time
+# period(default 30 seconds), in order to avoid interference from it,
+# run sync before test to make all dirty inodes clean, and it also
+# accelerates syncfs on testing filesystem so that test case can finish
+# in 30 seconds.
+
+sync
+
+$XFS_IO_PROG -f -c "pwrite 0 4K" $SCRATCH_MNT/testfile >/dev/null 2>&1
+
+# fssum used for comparing checksum of test file(data & metedata).
+# option explanation:
+# -f : write out a full manifest file
+# -w <file> : send output to file
+# -r <file> : read checksum or manifest from file
+#
+# -[ugoamcde] : specify which fields to include in checksum calculation.
+# u : include uid
+# g : include gid
+# o : include mode
+# m : include mtime
+# a : include atime
+# c : include ctime
+# d : include file data
+# e : include open errors (aborts otherwise)
+# s : include block structure (holes)
+# -[UGOAMCDES]: exclude respective field from calculation
+
+$FSSUM_PROG -ugomAcdES -f -w $tmp.fssum $SCRATCH_MNT
+$XFS_IO_PROG -c "syncfs" $SCRATCH_MNT/testfile >/dev/null 2>&1
+_scratch_shutdown
+_scratch_cycle_mount
+$FSSUM_PROG -r $tmp.fssum $SCRATCH_MNT >/dev/null 2>&1
+status=$?
+
+echo "Silence is golden"
+exit
diff --git a/tests/generic/470.out b/tests/generic/470.out
new file mode 100644
index 0000000..79fb532
--- /dev/null
+++ b/tests/generic/470.out
@@ -0,0 +1,2 @@
+QA output created by 470
+Silence is golden
diff --git a/tests/generic/group b/tests/generic/group
index 6c3bb03..493a44c 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -472,3 +472,4 @@
467 auto quick exportfs
468 shutdown auto quick metadata
469 auto quick
+470 auto quick shutdown sync
--
1.8.3.1
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