xfstests: btrfs/015: add a regression test for snapshot creation

We had a regression where you couldn't snapshot a file system if
you mounted it ro and then remounted it rw.  This is a test that
does just that to make sure we don't have this problem again.  I
ran the test without the fix and it blew up, and then applied the
fix and verified that it passed.

[rjohnston: renumbered test]

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Reviewed-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Rich Johnston <rjohnston@sgi.com>

diff --git a/tests/btrfs/015 b/tests/btrfs/015
new file mode 100644 (file)
index 0000000..b7b5021
--- /dev/null
+++ b/tests/btrfs/015
@@ -0,0 +1,61 @@
+#! /bin/bash
+# FS QA Test No. btrfs/015
+#
+# Regression test to make sure we can create a snapshot after mounting with
+# readonly and remounting rw.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2013 Fusion IO.  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"
+
+here=`pwd`
+tmp=/tmp/$$
+
+status=1       # failure is the default!
+
+_cleanup()
+{
+       rm -f $tmp.*
+}
+
+trap "_cleanup ; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+_supported_fs btrfs
+_supported_os Linux
+_require_scratch
+
+rm -f $seqres.full
+
+_scratch_mkfs > /dev/null 2>&1
+_scratch_mount -o ro
+_scratch_mount -o rw,remount
+
+$BTRFS_UTIL_PROG sub snap $SCRATCH_MNT $SCRATCH_MNT/snap >> $seqres.full 2>&1 \
+       || _fail "couldn't create snapshot"
+
+echo "Silence is golden"
+status=0 ; exit

diff --git a/tests/btrfs/015.out b/tests/btrfs/015.out
new file mode 100644 (file)
index 0000000..fee0fcf
--- /dev/null
+++ b/tests/btrfs/015.out
@@ -0,0 +1,2 @@
+QA output created by 015
+Silence is golden

diff --git a/tests/btrfs/group b/tests/btrfs/group
index 07df95731e6d789efee0dd76105a7bf72b9d1205..a6f18202d1e6933ff0f507b7f1a64d3495e55c9b 100644 (file)
--- a/tests/btrfs/group
+++ b/tests/btrfs/group
@@ -17,3 +17,4 @@
 012 auto
 013 auto quick
 014 auto
+015 auto quick