linux-ext4 - [PATCHv3 3/4] generic/678: Add a new shutdown recovery test

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Message-Id: <2df6ee0680b5d2a6fad945e4936749f22abe72dd.1648730443.git.ritesh.list@gmail.com>
Date:   Thu, 31 Mar 2022 18:24:22 +0530
From:   Ritesh Harjani <ritesh.list@...il.com>
To:     fstests <fstests@...r.kernel.org>
Cc:     linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        "Darrick J . Wong" <djwong@...nel.org>,
        Ritesh Harjani <riteshh@...ux.ibm.com>
Subject: [PATCHv3 3/4] generic/678: Add a new shutdown recovery test

From: Ritesh Harjani <riteshh@...ux.ibm.com>

In certain cases (it is noted with ext4 fast_commit feature) that, replay phase
may not delete the right range of blocks (after sudden FS shutdown)
due to some operations which depends on inode->i_size (which during replay of
an inode with fast_commit could be 0 for sometime).
This fstest is added to test for such scenarios for all generic fs.

This test case is based on the test case shared via Xin Yin.

Signed-off-by: Ritesh Harjani <riteshh@...ux.ibm.com>
---
 tests/generic/678     | 72 +++++++++++++++++++++++++++++++++++++++++++
 tests/generic/678.out |  7 +++++
 2 files changed, 79 insertions(+)
 create mode 100755 tests/generic/678
 create mode 100644 tests/generic/678.out

diff --git a/tests/generic/678 b/tests/generic/678
new file mode 100755
index 00000000..46a7be6c
--- /dev/null
+++ b/tests/generic/678
@@ -0,0 +1,72 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2022 IBM Corporation.  All Rights Reserved.
+#
+# FS QA Test 678
+#
+# This test with ext4 fast_commit feature w/o below patch missed to delete the right
+# range during replay phase, since it depends upon inode->i_size (which might not be
+# stable during replay phase, at least for ext4).
+# 0b5b5a62b945a141: ext4: use ext4_ext_remove_space() for fast commit replay delete range
+# (Based on test case shared by Xin Yin <yinxin.x@...edance.com>)
+#
+
+. ./common/preamble
+_begin_fstest auto shutdown quick log recoveryloop
+
+# Override the default cleanup function.
+_cleanup()
+{
+	cd /
+	rm -r -f $tmp.*
+}
+
+# Import common functions.
+. ./common/filter
+. ./common/punch
+
+# real QA test starts here
+
+# Modify as appropriate.
+_supported_fs generic
+_require_scratch
+_require_xfs_io_command "fpunch"
+_require_xfs_io_command "fzero"
+_require_xfs_io_command "fiemap"
+_require_scratch_shutdown
+
+t1=$SCRATCH_MNT/foo
+t2=$SCRATCH_MNT/bar
+
+_scratch_mkfs > $seqres.full 2>&1
+
+_scratch_mount >> $seqres.full 2>&1
+
+bs=$(_get_file_block_size $SCRATCH_MNT)
+
+# create and write data to t1
+$XFS_IO_PROG -f -c "pwrite 0 $((100*$bs))" $t1 | _filter_xfs_io_numbers
+
+# fzero certain range in between with -k
+$XFS_IO_PROG -c "fzero -k  $((40*$bs)) $((20*$bs))" $t1
+
+# create and fsync a new file t2
+$XFS_IO_PROG -f -c "fsync" $t2
+
+# fpunch within the i_size of a file
+$XFS_IO_PROG -c "fpunch $((30*$bs)) $((20*$bs))" $t1
+
+# fsync t1 to trigger journal operation
+$XFS_IO_PROG -c "fsync" $t1
+
+# shutdown FS now for replay journal to kick in next mount
+_scratch_shutdown -v >> $seqres.full 2>&1
+
+_scratch_cycle_mount
+
+# check fiemap reported is valid or not
+$XFS_IO_PROG -c "fiemap -v" $t1 | _filter_fiemap_flags $bs
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/678.out b/tests/generic/678.out
new file mode 100644
index 00000000..e0992edd
--- /dev/null
+++ b/tests/generic/678.out
@@ -0,0 +1,7 @@
+QA output created by 678
+wrote XXXX/XXXX bytes at offset XXXX
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+0: [0..29]: none
+1: [30..49]: hole
+2: [50..59]: unwritten
+3: [60..99]: nonelast
-- 
2.31.1