linux-ext4 - [PATCHv1 3/4] ext4/057: Add crash test to check unwritten extents tracking with fast

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Message-Id: <0c28ae0676bf76d02d2b0edf092f55cb6d049737.1644070604.git.riteshh@linux.ibm.com>
Date:   Sat,  5 Feb 2022 19:58:53 +0530
From:   Ritesh Harjani <riteshh@...ux.ibm.com>
To:     fstests <fstests@...r.kernel.org>
Cc:     linux-ext4@...r.kernel.org, Ritesh Harjani <riteshh@...ux.ibm.com>
Subject: [PATCHv1 3/4] ext4/057: Add crash test to check unwritten extents tracking with fast_commit

fast_commit in certain cases as discussed in the corresponding kernel
commit may miss to track the unwritten extents. This patch add a test
case around that (based on test case shared in kernel commit)

5e4d0eba1ccaf19f
ext4: fix fast commit may miss tracking range for FALLOC_FL_ZERO_RANGE

Signed-off-by: Ritesh Harjani <riteshh@...ux.ibm.com>
---
 tests/ext4/057     | 62 ++++++++++++++++++++++++++++++++++++++++++++++
 tests/ext4/057.out |  6 +++++
 2 files changed, 68 insertions(+)
 create mode 100755 tests/ext4/057
 create mode 100644 tests/ext4/057.out

diff --git a/tests/ext4/057 b/tests/ext4/057
new file mode 100755
index 00000000..9d008b65
--- /dev/null
+++ b/tests/ext4/057
@@ -0,0 +1,62 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2022 IBM.  All Rights Reserved.
+#
+# FS QA Test 057
+#
+# Test for ext4 fast_commit crash recovery test fixed by below kernel commit.
+#
+# commit 5e4d0eba1ccaf19f
+# ext4: fix fast commit may miss tracking range for FALLOC_FL_ZERO_RANGE
+#
+. ./common/preamble
+_begin_fstest auto quick log shutdown
+
+# Override the default cleanup function.
+_cleanup()
+{
+	cd /
+	rm -r -f $tmp.*
+}
+
+# Import common functions.
+. ./common/filter
+. ./common/punch
+
+# real QA test starts here
+
+# Modify as appropriate.
+_supported_fs ext4
+_require_scratch
+_require_scratch_ext4_feature "fast_commit"
+
+t1=$SCRATCH_MNT/t1
+
+$MKFS_EXT4_PROG -F -O 64bit,fast_commit $SCRATCH_DEV 512m >> $seqres.full 2>&1
+_scratch_mount >> $seqres.full 2>&1
+
+bs=$(_get_block_size $SCRATCH_MNT)
+
+# create and write data to t1
+$XFS_IO_PROG -f -c "pwrite 0 $((100*$bs))" $t1 | _filter_xfs_io
+
+# fsync t1
+$XFS_IO_PROG -c "fsync" $t1
+
+# fzero certain range in between
+$XFS_IO_PROG -c "fzero -k  $((40*$bs)) $((20*$bs))" $t1 | _filter_xfs_io
+
+# fsync t1
+$XFS_IO_PROG -c "fsync" $t1
+
+# shutdown FS now for replay of FC 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/ext4/057.out b/tests/ext4/057.out
new file mode 100644
index 00000000..fc905de6
--- /dev/null
+++ b/tests/ext4/057.out
@@ -0,0 +1,6 @@
+QA output created by 057
+wrote 409600/409600 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+0: [0..39]: none
+1: [40..59]: unwritten
+2: [60..99]: nonelast
-- 
2.31.1