From: Filipe Manana <fdmanana@xxxxxxxx>
Test that an incremental send operation does not prematurely issues rmdir
operations under a particular scenario (the rmdir operation is sent before
the target directory is empty).
This issue is fixed by the following patch for the linux kernel:
"Btrfs: incremental send, fix premature rmdir operations"
Signed-off-by: Filipe Manana <fdmanana@xxxxxxxx>
---
V2: Added missing _require_test and "cd /" to the _cleanup function.
tests/btrfs/126 | 125 ++++++++++++++++++++++++++++++++++++++++++++++++++++
tests/btrfs/126.out | 2 +
tests/btrfs/group | 1 +
3 files changed, 128 insertions(+)
create mode 100755 tests/btrfs/126
create mode 100644 tests/btrfs/126.out
diff --git a/tests/btrfs/126 b/tests/btrfs/126
new file mode 100755
index 0000000..772df9e
--- /dev/null
+++ b/tests/btrfs/126
@@ -0,0 +1,125 @@
+#! /bin/bash
+# FS QA Test No. btrfs/126
+#
+# Test that an incremental send operation does not prematurely issues rmdir
+# operations under a particular scenario (the rmdir operation is sent before
+# the target directory is empty).
+#
+#-----------------------------------------------------------------------
+# Copyright (C) 2016 SUSE Linux Products GmbH. All Rights Reserved.
+# Author: Filipe Manana <fdmanana@xxxxxxxx>
+#
+# 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 $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+_supported_fs btrfs
+_supported_os Linux
+_require_scratch
+_require_test
+_require_fssum
+
+send_files_dir=$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/a
+mkdir $SCRATCH_MNT/tmp
+mkdir $SCRATCH_MNT/del
+mv $SCRATCH_MNT/tmp $SCRATCH_MNT/del
+mkdir $SCRATCH_MNT/a/c
+mkdir $SCRATCH_MNT/del/x
+
+# Filesystem looks like:
+#
+# . (ino 256)
+# |--- a/ (ino 257)
+# | |--- c/ (ino 260)
+# |
+# |--- del/ (ino 259)
+# |--- tmp/ (ino 258)
+# |--- x/ (ino 261)
+#
+_run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
+
+# When inode 260 was processed, rename operations for it and for inode 258 were
+# issued (the rename for inode 260 must happen before the rename for inode 258).
+# Then immediately after issuing the rename operation for inode 258, and before
+# inode 261 was processed, the send stream issued a rmdir operation for inode
+# 260, which would make the receiver fail with the error ENOTEMPTY because inode
+# 261 was not yet renamed, it was still a child of inode 260 at that time.
+#
+mv $SCRATCH_MNT/a/c $SCRATCH_MNT
+mv $SCRATCH_MNT/del/x $SCRATCH_MNT/a
+mv $SCRATCH_MNT/del/tmp $SCRATCH_MNT/c
+rmdir $SCRATCH_MNT/del
+
+# Filesystem now looks like:
+#
+# . (ino 256)
+# |--- a/ (ino 257)
+# | |--- x/ (ino 261)
+# |
+# |--- c/ (ino 260)
+# |--- tmp/ (ino 258)
+#
+_run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
+
+run_check $FSSUM_PROG -A -f -w $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
+run_check $FSSUM_PROG -A -f -w $send_files_dir/2.fssum \
+ -x $SCRATCH_MNT/mysnap2/mysnap1 $SCRATCH_MNT/mysnap2
+
+_run_btrfs_util_prog send $SCRATCH_MNT/mysnap1 -f $send_files_dir/1.snap
+_run_btrfs_util_prog send -p $SCRATCH_MNT/mysnap1 $SCRATCH_MNT/mysnap2 \
+ -f $send_files_dir/2.snap
+
+# Now recreate the filesystem by receiving both send streams and verify we get
+# the same content that the original filesystem had.
+_scratch_unmount
+_scratch_mkfs >>$seqres.full 2>&1
+_scratch_mount
+
+_run_btrfs_util_prog receive $SCRATCH_MNT -f $send_files_dir/1.snap
+run_check $FSSUM_PROG -r $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
+_run_btrfs_util_prog receive $SCRATCH_MNT -f $send_files_dir/2.snap
+run_check $FSSUM_PROG -r $send_files_dir/2.fssum $SCRATCH_MNT/mysnap2
+
+echo "Silence is golden"
+status=0
+exit
diff --git a/tests/btrfs/126.out b/tests/btrfs/126.out
new file mode 100644
index 0000000..dcab9e3
--- /dev/null
+++ b/tests/btrfs/126.out
@@ -0,0 +1,2 @@
+QA output created by 126
+Silence is golden
diff --git a/tests/btrfs/group b/tests/btrfs/group
index 82443f6..b134caa 100644
--- a/tests/btrfs/group
+++ b/tests/btrfs/group
@@ -128,3 +128,4 @@
123 auto quick qgroup
124 auto quick send
125 auto quick send
+126 auto quick send
--
2.7.0.rc3
--
To unsubscribe from this list: send the line "unsubscribe fstests" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
