[PATCH 3/7] generic: test reflink and copy_file_range behavior with O_SYNC and FS_XFLAG_SYNC files

Darrick J. Wong
2020-11-11T00:46:16Z

Add two regression tests to make sure that FICLONERANGE and the splice
based copy_file_range actually flush all data and metadata to disk
before the call ends.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
---
tests/generic/947 | 117 +++++++++++++++++++++++++++++++++++++++++++++++++
tests/generic/947.out | 15 ++++++
tests/generic/948 | 90 ++++++++++++++++++++++++++++++++++++++
tests/generic/948.out | 9 ++++
tests/generic/group | 2 +
5 files changed, 233 insertions(+)
create mode 100755 tests/generic/947
create mode 100644 tests/generic/947.out
create mode 100755 tests/generic/948
create mode 100644 tests/generic/948.out

diff --git a/tests/generic/947 b/tests/generic/947
new file mode 100755
index 00000000..d2adf745
--- /dev/null
+++ b/tests/generic/947
@@ -0,0 +1,117 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (c) 2020, Oracle. All Rights Reserved.
+#
+# FS QA Test No. 947
+#
+# Make sure that reflink forces the log out if we open the file with O_SYNC or
+# set FS_XFLAG_SYNC on the file. We test that it actually forced the log by
+# using dm-error to shut down the fs without flushing the log and then
+# remounting to check file contents.
+
+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.*
+ _dmerror_unmount
+ _dmerror_cleanup
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+. ./common/dmerror
+
+# real QA test starts here
+_supported_fs generic
+_require_dm_target error
+_require_scratch_reflink
+_require_xfs_io_command "chattr" "s"
+_require_cp_reflink
+
+rm -f $seqres.full
+
+# Format filesystem and set up quota limits
+_scratch_mkfs > $seqres.full
+_require_metadata_journaling $SCRATCH_DEV
+_dmerror_init
+_dmerror_mount
+
+# Test that O_SYNC actually results in file data being written even if the
+# fs immediately dies
+echo "test o_sync write"
+$XFS_IO_PROG -x -f -s -c "pwrite -S 0x58 0 1m -b 1m" $SCRATCH_MNT/0 >> $seqres.full
+_dmerror_load_error_table
+_dmerror_unmount
+_dmerror_load_working_table
+_dmerror_mount
+md5sum $SCRATCH_MNT/0 | _filter_scratch
+
+# Set up initial files for reflink test
+$XFS_IO_PROG -f -c 'pwrite -S 0x58 0 1m -b 1m' $SCRATCH_MNT/a >> $seqres.full
+$XFS_IO_PROG -f -c 'pwrite -S 0x59 0 1m -b 1m' $SCRATCH_MNT/c >> $seqres.full
+_cp_reflink $SCRATCH_MNT/a $SCRATCH_MNT/e
+_cp_reflink $SCRATCH_MNT/c $SCRATCH_MNT/d
+touch $SCRATCH_MNT/b
+sync
+
+# Test that reflink forces dirty data/metadata to disk when destination file
+# opened with O_SYNC
+echo "test reflink flag not set o_sync"
+$XFS_IO_PROG -x -s -c "reflink $SCRATCH_MNT/a" $SCRATCH_MNT/b >> $seqres.full
+_dmerror_load_error_table
+_dmerror_unmount
+_dmerror_load_working_table
+_dmerror_mount
+md5sum $SCRATCH_MNT/a $SCRATCH_MNT/b | _filter_scratch
+
+# Test that reflink to a shared file forces dirty data/metadata to disk when
+# destination is opened with O_SYNC
+echo "test reflink flag already set o_sync"
+$XFS_IO_PROG -x -s -c "reflink $SCRATCH_MNT/a" $SCRATCH_MNT/d >> $seqres.full
+_dmerror_load_error_table
+_dmerror_unmount
+_dmerror_load_working_table
+_dmerror_mount
+md5sum $SCRATCH_MNT/a $SCRATCH_MNT/d | _filter_scratch
+
+# Set up the two files with chattr +S
+rm -f $SCRATCH_MNT/b $SCRATCH_MNT/d
+_cp_reflink $SCRATCH_MNT/c $SCRATCH_MNT/d
+touch $SCRATCH_MNT/b
+chattr +S $SCRATCH_MNT/b $SCRATCH_MNT/d
+sync
+
+# Test that reflink forces dirty data/metadata to disk when destination file
+# has the sync iflag set
+echo "test reflink flag not set iflag"
+$XFS_IO_PROG -x -c "reflink $SCRATCH_MNT/a" $SCRATCH_MNT/b >> $seqres.full
+_dmerror_load_error_table
+_dmerror_unmount
+_dmerror_load_working_table
+_dmerror_mount
+md5sum $SCRATCH_MNT/a $SCRATCH_MNT/b | _filter_scratch
+
+# Test that reflink to a shared file forces dirty data/metadata to disk when
+# destination file has the sync iflag set
+echo "test reflink flag already set iflag"
+$XFS_IO_PROG -x -c "reflink $SCRATCH_MNT/a" $SCRATCH_MNT/d >> $seqres.full
+_dmerror_load_error_table
+_dmerror_unmount
+_dmerror_load_working_table
+_dmerror_mount
+md5sum $SCRATCH_MNT/a $SCRATCH_MNT/d | _filter_scratch
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/947.out b/tests/generic/947.out
new file mode 100644
index 00000000..05ba10d1
--- /dev/null
+++ b/tests/generic/947.out
@@ -0,0 +1,15 @@
+QA output created by 947
+test o_sync write
+310f146ce52077fcd3308dcbe7632bb2 SCRATCH_MNT/0
+test reflink flag not set o_sync
+310f146ce52077fcd3308dcbe7632bb2 SCRATCH_MNT/a
+310f146ce52077fcd3308dcbe7632bb2 SCRATCH_MNT/b
+test reflink flag already set o_sync
+310f146ce52077fcd3308dcbe7632bb2 SCRATCH_MNT/a
+310f146ce52077fcd3308dcbe7632bb2 SCRATCH_MNT/d
+test reflink flag not set iflag
+310f146ce52077fcd3308dcbe7632bb2 SCRATCH_MNT/a
+310f146ce52077fcd3308dcbe7632bb2 SCRATCH_MNT/b
+test reflink flag already set iflag
+310f146ce52077fcd3308dcbe7632bb2 SCRATCH_MNT/a
+310f146ce52077fcd3308dcbe7632bb2 SCRATCH_MNT/d
diff --git a/tests/generic/948 b/tests/generic/948
new file mode 100755
index 00000000..83fe414b
--- /dev/null
+++ b/tests/generic/948
@@ -0,0 +1,90 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (c) 2020, Oracle. All Rights Reserved.
+#
+# FS QA Test No. 948
+#
+# Make sure that copy_file_range forces the log out if we open the file with
+# O_SYNC or set FS_XFLAG_SYNC on the file. We test that it actually forced the
+# log by using dm-error to shut down the fs without flushing the log and then
+# remounting to check file contents.
+
+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.*
+ _dmerror_unmount
+ _dmerror_cleanup
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/dmerror
+
+# real QA test starts here
+_supported_fs generic
+_require_dm_target error
+_require_xfs_io_command "chattr" "s"
+
+rm -f $seqres.full
+
+# Format filesystem and set up quota limits
+_scratch_mkfs > $seqres.full
+_require_metadata_journaling $SCRATCH_DEV
+_dmerror_init
+_dmerror_mount
+
+# Test that O_SYNC actually results in file data being written even if the
+# fs immediately dies
+echo "test o_sync write"
+$XFS_IO_PROG -x -f -s -c "pwrite -S 0x58 0 1m -b 1m" $SCRATCH_MNT/0 >> $seqres.full
+_dmerror_load_error_table
+_dmerror_unmount
+_dmerror_load_working_table
+_dmerror_mount
+md5sum $SCRATCH_MNT/0 | _filter_scratch
+
+# Set up initial files for copy test
+$XFS_IO_PROG -f -c 'pwrite -S 0x58 0 1m -b 1m' $SCRATCH_MNT/a >> $seqres.full
+touch $SCRATCH_MNT/b
+sync
+
+# Test that unaligned copy file range forces dirty data/metadata to disk when
+# destination file opened with O_SYNC
+echo "test unaligned copy range o_sync"
+$XFS_IO_PROG -x -s -c "copy_range -s 13 -d 13 -l 1048550 $SCRATCH_MNT/a" $SCRATCH_MNT/b >> $seqres.full
+_dmerror_load_error_table
+_dmerror_unmount
+_dmerror_load_working_table
+_dmerror_mount
+md5sum $SCRATCH_MNT/a $SCRATCH_MNT/b | _filter_scratch
+
+# Set up dest file with chattr +S
+rm -f $SCRATCH_MNT/b
+touch $SCRATCH_MNT/b
+chattr +S $SCRATCH_MNT/b
+sync
+
+# Test that unaligned copy file range forces dirty data/metadata to disk when
+# destination file has the sync iflag set
+echo "test unaligned copy range iflag"
+$XFS_IO_PROG -x -c "copy_range -s 13 -d 13 -l 1048550 $SCRATCH_MNT/a" $SCRATCH_MNT/b >> $seqres.full
+_dmerror_load_error_table
+_dmerror_unmount
+_dmerror_load_working_table
+_dmerror_mount
+md5sum $SCRATCH_MNT/a $SCRATCH_MNT/b | _filter_scratch
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/948.out b/tests/generic/948.out
new file mode 100644
index 00000000..eec6c0dc
--- /dev/null
+++ b/tests/generic/948.out
@@ -0,0 +1,9 @@
+QA output created by 948
+test o_sync write
+310f146ce52077fcd3308dcbe7632bb2 SCRATCH_MNT/0
+test unaligned copy range o_sync
+310f146ce52077fcd3308dcbe7632bb2 SCRATCH_MNT/a
+2a715d2093b5aca82783a0c5943ac0b8 SCRATCH_MNT/b
+test unaligned copy range iflag
+310f146ce52077fcd3308dcbe7632bb2 SCRATCH_MNT/a
+2a715d2093b5aca82783a0c5943ac0b8 SCRATCH_MNT/b
diff --git a/tests/generic/group b/tests/generic/group
index ab8ae74e..4300158e 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -617,3 +617,5 @@
612 auto quick clone
613 auto quick encrypt
614 auto quick rw
+947 auto quick rw clone
+948 auto quick rw copy_range