diff mbox

[v2] xfstests: add test for btrfs send regarding directory moves/renames

Message ID 1395022576-17367-1-git-send-email-fdmanana@gmail.com (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Filipe Manana March 17, 2014, 2:16 a.m. UTC 
Regression test for a btrfs incremental send issue where the kernel entered
an infinite loop building a path string. This happened when either of the 2
following cases happened:

1) A directory was made a child of another directory which has a lower inode
   number and has a pending move/rename operation;

2) A directory was made a child of another directory which has a higher inode
   number, but the new parent wasn't moved nor renamed. Instead some other
   ancestor higher in the hierarchy, with an higher inode number too, was
   moved/renamed too.

This issue is fixed by the following linux kernel btrfs patch:

   Btrfs: fix incremental send's decision to delay a dir move/rename
   Btrfs: part 2, fix incremental send's decision to delay a dir move/rename

Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
---

V2: Added more tests.

 tests/btrfs/045     |  177 +++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/btrfs/045.out |    1 +
 tests/btrfs/group   |    1 +
 3 files changed, 179 insertions(+)
 create mode 100755 tests/btrfs/045
 create mode 100644 tests/btrfs/045.out
diff mbox

Patch

diff --git a/tests/btrfs/045 b/tests/btrfs/045
new file mode 100755
index 0000000..ee91240
--- /dev/null
+++ b/tests/btrfs/045
@@ -0,0 +1,177 @@ 
+#! /bin/bash
+# FS QA Test No. btrfs/045
+#
+# Regression test for a btrfs incremental send issue where the kernel entered
+# an infinite loop building a path string. This happened when either of the
+# 2 following cases happened:
+#
+# 1) A directory was made a child of another directory which has a lower inode
+#    number and has a pending move/rename operation;
+#
+# 2) A directory was made a child of another directory which has a higher inode
+#    number, but the new parent wasn't moved nor renamed. Instead some other
+#    ancestor higher in the hierarchy, with an higher inode number too, was
+#    moved/renamed too.
+#
+# This issue is fixed by the following linux kernel btrfs patch:
+#
+#   Btrfs: fix incremental send's decision to delay a dir move/rename
+#   Btrfs: part 2, fix incremental send's decision to delay a dir move/rename
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2014 Filipe Manana.  All Rights Reserved.
+#
+# 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=`mktemp -d`
+status=1	# failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    rm -fr $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_fssum
+_need_to_be_root
+
+rm -f $seqres.full
+
+_scratch_mkfs >/dev/null 2>&1
+_scratch_mount
+
+mkdir -p $SCRATCH_MNT/a/b
+mkdir $SCRATCH_MNT/a/c
+mkdir $SCRATCH_MNT/a/b/d
+touch $SCRATCH_MNT/a/file1
+touch $SCRATCH_MNT/a/b/file2
+mv $SCRATCH_MNT/a/file1 $SCRATCH_MNT/a/b/d/file3
+ln $SCRATCH_MNT/a/b/d/file3 $SCRATCH_MNT/a/b/file4
+mkdir $SCRATCH_MNT/a/b/f
+mv $SCRATCH_MNT/a/b $SCRATCH_MNT/a/c/b2
+touch $SCRATCH_MNT/a/c/b2/d/file5
+
+mkdir -p $SCRATCH_MNT/a/x1/x2
+mkdir $SCRATCH_MNT/a/Z
+mkdir -p $SCRATCH_MNT/a/x1/x2/x3/x4/x5
+
+# Filesystem looks like:
+#
+# .                               (ino 256)
+# |-- a/                          (ino 257)
+#     |-- c/                      (ino 259)
+#     |   |-- b2/                 (ino 258)
+#     |       |-- d/              (ino 260)
+#     |       |   |-- file3       (ino 261)
+#     |       |   |-- file5       (ino 264)
+#     |       |
+#     |       |-- file2           (ino 262)
+#     |       |-- file4           (ino 261)
+#     |       |-- f/              (ino 263)
+#     |
+#     |-- x1/                     (ino 265)
+#     |   |-- x2/                 (ino 266)
+#     |       |-- x3/             (ino 268)
+#     |           |-- x4/         (ino 269)
+#     |               |-- x5/     (ino 270)
+#     |
+#     |-- Z/                      (ino 267)
+
+_run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
+
+ln $SCRATCH_MNT/a/c/b2/file4 $SCRATCH_MNT/a/c/b2/f/file6
+mv $SCRATCH_MNT/a/c/b2/d/file5 $SCRATCH_MNT/a/c/file7
+touch $SCRATCH_MNT/a/c/b2/d/file8
+touch $SCRATCH_MNT/a/c/b2/file9
+ln $SCRATCH_MNT/a/c/b2/file9 $SCRATCH_MNT/a/c/b2/file10
+mv $SCRATCH_MNT/a/c/b2/f $SCRATCH_MNT/a/f2
+mv $SCRATCH_MNT/a/c $SCRATCH_MNT/a/c2
+mv $SCRATCH_MNT/a/c2/b2 $SCRATCH_MNT/a/f2/b3
+mv $SCRATCH_MNT/a/c2 $SCRATCH_MNT/a/f2/b3/c3
+touch $SCRATCH_MNT/a/f2/b3/c3/file11
+mv $SCRATCH_MNT/a $SCRATCH_MNT/a2
+
+mv $SCRATCH_MNT/a2/x1/x2/x3 $SCRATCH_MNT/a2/Z/X33
+mv $SCRATCH_MNT/a2/x1/x2 $SCRATCH_MNT/a2/Z/X33/x4/x5/X22
+
+# Filesystem now looks like:
+#
+# .                               (ino 256)
+# |-- a2/                         (ino 257)
+#     |
+#     |-- f2/                     (ino 263)
+#     |   |-- file6               (ino 261)
+#     |   |-- b3/                 (ino 258)
+#     |       |-- d/              (ino 260)
+#     |       |   |-- file3       (ino 261)
+#     |       |   |-- file8       (ino 270)
+#     |       |
+#     |       |-- file2           (ino 262)
+#     |       |-- file4           (ino 261)
+#     |       |-- file9           (ino 271)
+#     |       |-- file10          (ino 271)
+#     |       |
+#     |       |-- c3/             (ino 259)
+#     |           |-- file7       (ino 264)
+#     |           |-- file11      (ino 272)
+#     |
+#     |-- x1/                     (ino 265)
+#     |-- Z/                      (ino 267)
+#         |-- X33/                (ino 268)
+#              |-- x4/            (ino 269)
+#                  |-- x5/        (ino 270)
+#                      |-- X22/   (ino 266)
+#
+
+_run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
+
+run_check $FSSUM_PROG -A -f -w $tmp/1.fssum $SCRATCH_MNT/mysnap1
+run_check $FSSUM_PROG -A -f -w $tmp/2.fssum -x $SCRATCH_MNT/mysnap2/mysnap1 \
+	$SCRATCH_MNT/mysnap2
+
+_run_btrfs_util_prog send $SCRATCH_MNT/mysnap1 -f $tmp/1.snap
+
+_run_btrfs_util_prog send -p $SCRATCH_MNT/mysnap1 $SCRATCH_MNT/mysnap2 \
+	-f $tmp/2.snap
+
+_check_scratch_fs
+
+_scratch_unmount
+_scratch_mkfs >/dev/null 2>&1
+_scratch_mount
+
+_run_btrfs_util_prog receive $SCRATCH_MNT -f $tmp/1.snap
+run_check $FSSUM_PROG -r $tmp/1.fssum $SCRATCH_MNT/mysnap1
+
+_run_btrfs_util_prog receive $SCRATCH_MNT -f $tmp/2.snap
+run_check $FSSUM_PROG -r $tmp/2.fssum $SCRATCH_MNT/mysnap2
+
+_check_scratch_fs
+
+status=0
+exit
diff --git a/tests/btrfs/045.out b/tests/btrfs/045.out
new file mode 100644
index 0000000..5b0d489
--- /dev/null
+++ b/tests/btrfs/045.out
@@ -0,0 +1 @@ 
+QA output created by 045
diff --git a/tests/btrfs/group b/tests/btrfs/group
index 4589043..9b41895 100644
--- a/tests/btrfs/group
+++ b/tests/btrfs/group
@@ -47,3 +47,4 @@ 
 042 auto quick
 043 auto quick
 044 auto quick
+045 auto quick