[PATCH v3 2/4] xfstests: btrfs/132: add test for invaild update time by an incremental send

[robbieko <robbieko@synology.com>]

From: Robbie Ko <robbieko@synology.com>

Test that an incremental send operation dosen't' work because
it tries to update the time to a deleted directory after it finishes
a move operation.

The other one is that an operation is applied to a file using the old
name not the new name.

This test exercises scenarios used to fail in btrfs and are fixed by
the following patches for the linux kernel:

"Btrfs: incremental send, add generation check for the inode waiting for rmdir operation."
"Btrfs: incremental send, add generation check in existence demtermination for the parent directory"

Signed-off-by: Robbie Ko <robbieko@synology.com>
---
V3: remove "run_" based helpers
V2: improve the change log

 tests/btrfs/132     | 123 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/btrfs/132.out |   7 +++
 tests/btrfs/group   |   1 +
 3 files changed, 131 insertions(+)
 create mode 100755 tests/btrfs/132
 create mode 100644 tests/btrfs/132.out

diff --git a/tests/btrfs/132 b/tests/btrfs/132
new file mode 100755
index 0000000..f1bb698
--- /dev/null
+++ b/tests/btrfs/132
@@ -0,0 +1,123 @@
+#! /bin/bash
+# FS QA Test No. btrfs/132
+#
+# Test that an incremental send operation dosen't' work because
+# it tries to update the time to a deleted directory after it finishes
+# a move operation.
+# 
+# The other one is that an operation is applied to a file using the old
+# name not the new name.
+#
+#-----------------------------------------------------------------------
+# Copyright (C) 2016 Synology Inc. All Rights Reserved.
+# Author: Robbie Ko <robbieko@synology.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+#
+
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+	cd /
+	rm -fr $send_files_dir
+	rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+_supported_fs btrfs
+_supported_os Linux
+_require_test
+_require_scratch
+_require_fssum
+
+send_files_dir=$TEST_DIR/btrfs-test-$seq
+
+rm -f $seqres.full
+rm -fr $send_files_dir
+mkdir $send_files_dir
+
+_scratch_mkfs >>$seqres.full 2>&1
+_scratch_mount
+
+mkdir $SCRATCH_MNT/dir257
+mkdir $SCRATCH_MNT/dir258
+mkdir $SCRATCH_MNT/dir259
+mv $SCRATCH_MNT/dir257 $SCRATCH_MNT/dir258/dir257
+
+# Filesystem looks like:
+#
+# .                                                             (ino 256)
+# |--- dir258/                                                  (ino 258)
+# |    |--- dir257/                                             (ino 257)
+# |
+# |--- dir259/                                                  (ino 259)
+#
+$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
+    $SCRATCH_MNT/mysnap1 > /dev/null
+
+mv $SCRATCH_MNT/dir258/dir257 $SCRATCH_MNT/dir257
+rmdir $SCRATCH_MNT/dir258
+rmdir $SCRATCH_MNT/dir259
+_scratch_unmount
+_scratch_mount
+touch $SCRATCH_MNT/file258
+mkdir $SCRATCH_MNT/new_dir259
+mv $SCRATCH_MNT/dir257 $SCRATCH_MNT/new_dir259/dir257
+
+# Filesystem now looks like:
+#
+# .                                                             (ino 256)
+# |--- file258                                                  (ino 258)
+# |
+# |--- new_dir259/                                              (ino 259)
+# |    |--- dir257/                                             (ino 257)
+#
+$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
+    $SCRATCH_MNT/mysnap2 > /dev/null
+
+$FSSUM_PROG -A -f -w $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
+$FSSUM_PROG -A -f -w $send_files_dir/2.fssum \
+        -x $SCRATCH_MNT/mysnap2/mysnap1 $SCRATCH_MNT/mysnap2
+
+$BTRFS_UTIL_PROG send $SCRATCH_MNT/mysnap1 -f \
+    $send_files_dir/1.snap 2>&1 1>/dev/null | _filter_scratch
+$BTRFS_UTIL_PROG send -p $SCRATCH_MNT/mysnap1 $SCRATCH_MNT/mysnap2 \
+	-f $send_files_dir/2.snap 2>&1 1>/dev/null | _filter_scratch
+
+# Now recreate the filesystem by receiving both send streams and verify we get
+# the same content that the original filesystem had.
+_scratch_unmount
+_scratch_mkfs >>$seqres.full 2>&1
+_scratch_mount
+
+$BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $send_files_dir/1.snap > /dev/null
+$FSSUM_PROG -r $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
+$BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $send_files_dir/2.snap > /dev/null
+$FSSUM_PROG -r $send_files_dir/2.fssum $SCRATCH_MNT/mysnap2
+
+echo "Silence is golden"
+status=0
+exit
diff --git a/tests/btrfs/132.out b/tests/btrfs/132.out
new file mode 100644
index 0000000..ff21547
--- /dev/null
+++ b/tests/btrfs/132.out
@@ -0,0 +1,7 @@
+QA output created by 132
+At subvol SCRATCH_MNT/mysnap1
+At subvol SCRATCH_MNT/mysnap2
+At subvol mysnap1
+OK
+OK
+Silence is golden
diff --git a/tests/btrfs/group b/tests/btrfs/group
index a7a070a..1b12382 100644
--- a/tests/btrfs/group
+++ b/tests/btrfs/group
@@ -134,3 +134,4 @@
 129 auto quick send
 130 auto clone send
 131 auto quick send
+132 auto quick send
-- 
1.9.1