Re: [PATCH 1/1] xfstests: Add Log Attribute Replay test

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On 8/25/21 6:02 PM, Darrick J. Wong wrote:
On Wed, Aug 25, 2021 at 05:58:14PM -0700, Allison Henderson wrote:


On 8/25/21 3:28 PM, Darrick J. Wong wrote:
On Wed, Aug 25, 2021 at 12:51:44PM -0700, Catherine Hoang wrote:
From: Allison Henderson <allison.henderson@xxxxxxxxxx>

This patch adds a test to exercise the log attribute error
inject and log replay.  Attributes are added in increaseing
sizes up to 64k, and the error inject is used to replay them
from the log

Signed-off-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
Signed-off-by: Catherine Hoang <catherine.hoang@xxxxxxxxxx>

Yay, [your] first post! :D

---
   tests/xfs/540     |  96 ++++++++++++++++++++++++++++++++++
   tests/xfs/540.out | 130 ++++++++++++++++++++++++++++++++++++++++++++++
   2 files changed, 226 insertions(+)
   create mode 100755 tests/xfs/540
   create mode 100644 tests/xfs/540.out

diff --git a/tests/xfs/540 b/tests/xfs/540
new file mode 100755
index 00000000..3b05b38b
--- /dev/null
+++ b/tests/xfs/540
@@ -0,0 +1,96 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2021, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# FS QA Test 540
+#
+# Log attribute replay test
+#
+. ./common/preamble
+_begin_fstest auto quick attr
+
+# get standard environment, filters and checks
+. ./common/filter
+. ./common/attr
+. ./common/inject
+
+_cleanup()
+{
+	echo "*** unmount"
+	_scratch_unmount 2>/dev/null
+	rm -f $tmp.*
+	echo 0 > /sys/fs/xfs/debug/larp
+}
+
+_test_attr_replay()
+{
+	attr_name=$1
+	attr_value=$2
+	touch $testfile.1
+
+	echo "Inject error"
+	_scratch_inject_error "larp"
+
+	echo "Set attribute"
+	echo "$attr_value" | ${ATTR_PROG} -s "$attr_name" $testfile.1 | \
+			    _filter_scratch
+
+	echo "FS should be shut down, touch will fail"
+	touch $testfile.1
+
+	echo "Remount to replay log"
+	_scratch_inject_logprint >> $seqres.full
+
+	echo "FS should be online, touch should succeed"
+	touch $testfile.1
+
+	echo "Verify attr recovery"
+	_getfattr --absolute-names $testfile.1 | _filter_scratch

Shouldn't we check the value of the extended attrs too?
I think the first time I did this years ago, I questioned if people would
really want to see a 110k .out file, and stopped with just the names.

Looking back at it now, maybe we could drop the value and the expected value
in separate files, and diff the files, and then the test case could just
check to make sure the diff output comes back clean?

$ATTR_PROG -g attr_nameX fubar.1 | md5sum

would be a more compact way of encoding exact byte sequence output in
the .out file.

--D
Ok, that sounds good then

Allison



+}
+
+
+# real QA test starts here
+_supported_fs xfs
+
+_require_scratch
+_require_attrs
+_require_xfs_io_error_injection "larp"
+_require_xfs_sysfs debug/larp
+
+# turn on log attributes
+echo 1 > /sys/fs/xfs/debug/larp
+
+rm -f $seqres.full

No need to do this anymore; _begin_fstest takes care of this now.

+_scratch_unmount >/dev/null 2>&1
+
+#attributes of increaseing sizes
+attr16="0123456789ABCDEFG"
Yes, we need to drop the G off this line :-)


"attr16" is seventeen bytes long.

+attr64="$attr16$attr16$attr16$attr16"
+attr256="$attr64$attr64$attr64$attr64"
+attr1k="$attr256$attr256$attr256$attr256"
+attr4k="$attr1k$attr1k$attr1k$attr1k"
+attr8k="$attr4k$attr4k$attr4k$attr4k"
I think I must have meant to do a 16k in here. Lets replace attr8k and
attr32k with:

attr8k="$attr4k$attr4k"
attr16k="$attr8k$attr8k"
attr32k="$attr16k$attr16k"

I think that's easier to look at too.  Then we can add another replay test
for the attr16k as well.


This is 17k long...

+attr32k="$attr8k$attr8k$attr8k$attr8k"

...which makes this 68k long...

+attr64k="$attr32k$attr32k"

...and this 136K long?

I'm curious, what are the contents of user.attr_name8?

OH, I see, attr clamps the value length to 64k, so I guess the oversize
buffers don't matter.

--D

+
+echo "*** mkfs"
+_scratch_mkfs_xfs >/dev/null
+
+echo "*** mount FS"
+_scratch_mount
+
+testfile=$SCRATCH_MNT/testfile
+echo "*** make test file 1"
+
+_test_attr_replay "attr_name1" $attr16
+_test_attr_replay "attr_name2" $attr64
+_test_attr_replay "attr_name3" $attr256
+_test_attr_replay "attr_name4" $attr1k
+_test_attr_replay "attr_name5" $attr4k
+_test_attr_replay "attr_name6" $attr8k
+_test_attr_replay "attr_name7" $attr32k
+_test_attr_replay "attr_name8" $attr64k
+
+echo "*** done"
+status=0
+exit
diff --git a/tests/xfs/540.out b/tests/xfs/540.out
new file mode 100644
index 00000000..c1b178a0
--- /dev/null
+++ b/tests/xfs/540.out
@@ -0,0 +1,130 @@
+QA output created by 540
+*** mkfs
+*** mount FS
+*** make test file 1
+Inject error
+Set attribute
+attr_set: Input/output error
+Could not set "attr_name1" for /mnt/scratch/testfile.1
+FS should be shut down, touch will fail
+touch: cannot touch '/mnt/scratch/testfile.1': Input/output error

The error messages need to be filtered too, because SCRATCH_MNT is
definitely not /mnt/scratch here. ;)
Ok, so we need to add "| _filter_scratch" to all the touch commands in
_test_attr_replay

Thanks for the reviews!
Allison


--D

+Remount to replay log
+FS should be online, touch should succeed
+Verify attr recovery
+# file: SCRATCH_MNT/testfile.1
+user.attr_name1
+
+Inject error
+Set attribute
+attr_set: Input/output error
+Could not set "attr_name2" for /mnt/scratch/testfile.1
+FS should be shut down, touch will fail
+touch: cannot touch '/mnt/scratch/testfile.1': Input/output error
+Remount to replay log
+FS should be online, touch should succeed
+Verify attr recovery
+# file: SCRATCH_MNT/testfile.1
+user.attr_name1
+user.attr_name2
+
+Inject error
+Set attribute
+attr_set: Input/output error
+Could not set "attr_name3" for /mnt/scratch/testfile.1
+FS should be shut down, touch will fail
+touch: cannot touch '/mnt/scratch/testfile.1': Input/output error
+Remount to replay log
+FS should be online, touch should succeed
+Verify attr recovery
+# file: SCRATCH_MNT/testfile.1
+user.attr_name1
+user.attr_name2
+user.attr_name3
+
+Inject error
+Set attribute
+attr_set: Input/output error
+Could not set "attr_name4" for /mnt/scratch/testfile.1
+FS should be shut down, touch will fail
+touch: cannot touch '/mnt/scratch/testfile.1': Input/output error
+Remount to replay log
+FS should be online, touch should succeed
+Verify attr recovery
+# file: SCRATCH_MNT/testfile.1
+user.attr_name1
+user.attr_name2
+user.attr_name3
+user.attr_name4
+
+Inject error
+Set attribute
+attr_set: Input/output error
+Could not set "attr_name5" for /mnt/scratch/testfile.1
+FS should be shut down, touch will fail
+touch: cannot touch '/mnt/scratch/testfile.1': Input/output error
+Remount to replay log
+FS should be online, touch should succeed
+Verify attr recovery
+# file: SCRATCH_MNT/testfile.1
+user.attr_name1
+user.attr_name2
+user.attr_name3
+user.attr_name4
+user.attr_name5
+
+Inject error
+Set attribute
+attr_set: Input/output error
+Could not set "attr_name6" for /mnt/scratch/testfile.1
+FS should be shut down, touch will fail
+touch: cannot touch '/mnt/scratch/testfile.1': Input/output error
+Remount to replay log
+FS should be online, touch should succeed
+Verify attr recovery
+# file: SCRATCH_MNT/testfile.1
+user.attr_name1
+user.attr_name2
+user.attr_name3
+user.attr_name4
+user.attr_name5
+user.attr_name6
+
+Inject error
+Set attribute
+attr_set: Input/output error
+Could not set "attr_name7" for /mnt/scratch/testfile.1
+FS should be shut down, touch will fail
+touch: cannot touch '/mnt/scratch/testfile.1': Input/output error
+Remount to replay log
+FS should be online, touch should succeed
+Verify attr recovery
+# file: SCRATCH_MNT/testfile.1
+user.attr_name1
+user.attr_name2
+user.attr_name3
+user.attr_name4
+user.attr_name5
+user.attr_name6
+user.attr_name7
+
+Inject error
+Set attribute
+attr_set: Input/output error
+Could not set "attr_name8" for /mnt/scratch/testfile.1
+FS should be shut down, touch will fail
+touch: cannot touch '/mnt/scratch/testfile.1': Input/output error
+Remount to replay log
+FS should be online, touch should succeed
+Verify attr recovery
+# file: SCRATCH_MNT/testfile.1
+user.attr_name1
+user.attr_name2
+user.attr_name3
+user.attr_name4
+user.attr_name5
+user.attr_name6
+user.attr_name7
+user.attr_name8
+
+*** done
+*** unmount
--
2.25.1




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