[v2] ext4: Add a test for rename with RENAME_WHITEOUT

* [v2] ext4: Add a test for rename with RENAME_WHITEOUT
@ 2021-01-28  6:12 Sun Ke
  2021-01-30 11:12 ` Zorro Lang
  0 siblings, 1 reply; 5+ messages in thread
From: Sun Ke @ 2021-01-28  6:12 UTC (permalink / raw)
  To: fstests, sunke32

Fill the disk space, try to create some files and rename a file, mount
again, list directory contents and triggers some errors. It is a
regression test for kernel commit 6b4b8e6b4ad8 ("ext4: ext4: fix bug for
rename with RENAME_WHITEOUT")

Signed-off-by: Sun Ke <sunke32@huawei.com>
---
v1 -> v3:
Use the original in src and modify 048.out
---
---
 tests/ext4/048     | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/ext4/048.out |  2 ++
 tests/ext4/group   |  1 +
 3 files changed, 79 insertions(+)
 create mode 100755 tests/ext4/048
 create mode 100644 tests/ext4/048.out

diff --git a/tests/ext4/048 b/tests/ext4/048
new file mode 100755
index 00000000..0311d1a2
--- /dev/null
+++ b/tests/ext4/048
@@ -0,0 +1,76 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2021 HUAWEI.  All Rights Reserved.
+#
+# FS QA Test 048
+#
+# This is a regression test for kernel patch:
+# commit 6b4b8e6b4ad8 ("ext4: ext4: fix bug for rename with RENAME_WHITEOUT")
+
+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.*
+}
+
+# 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
+
+# Modify as appropriate.
+_supported_fs ext4
+_supported_fs generic
+_require_scratch
+_require_xfs_io_command "falloc"
+
+dmesg -c > /dev/null
+
+_scratch_mkfs > $seqres.full 2>&1
+_scratch_mount >> $seqres.full 2>&1
+
+testdir=$SCRATCH_MNT
+cd ${testdir}
+
+mkdir test
+$XFS_IO_PROG -f -c "falloc 0 128M" img >> $seqres.full
+$MKFS_EXT4_PROG  img > /dev/null 2>&1
+$MOUNT_PROG img test
+
+# fill the disk space
+dd if=/dev/zero of=test/foo bs=1M count=128 > /dev/null 2>&1
+
+# create 1000 files, not all the files will be created successfully
+mkdir test/dir
+cd test/dir
+for ((i = 0; i < 1000; i++))
+do
+	touch file$i > /dev/null 2>&1
+done
+
+# try to rename, but now no space left on device
+$here/src/renameat2 -w $testdir/test/dir/file1 $testdir/test/dir/dst_file
+
+cd $testdir
+$UMOUNT_PROG test
+$MOUNT_PROG img test
+ls -l test/dir/file1 > /dev/null 2>&1
+$UMOUNT_PROG test
+
+dmesg -c | grep "deleted inode referenced"
+# success, all done
+status=0
+exit
diff --git a/tests/ext4/048.out b/tests/ext4/048.out
new file mode 100644
index 00000000..5b3990da
--- /dev/null
+++ b/tests/ext4/048.out
@@ -0,0 +1,2 @@
+QA output created by 048
+No space left on device
diff --git a/tests/ext4/group b/tests/ext4/group
index ceda2ba6..6140dd7e 100644
--- a/tests/ext4/group
+++ b/tests/ext4/group
@@ -50,6 +50,7 @@
 045 auto dir
 046 auto prealloc quick
 047 auto quick dax
+048 other
 271 auto rw quick
 301 aio auto ioctl rw stress defrag
 302 aio auto ioctl rw stress defrag
-- 
2.13.6


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