xfstests: btrfs/008, another send regression test

This is a regression test for a problem we had where we'd assume we had created
a directory if it only had subvols inside of it.  This was happening because
subvols would have lower inode numbers than our current send progress because
their inode numbers are based off of a different counter.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Rich Johnston <rjohnston@sgi.com>

[rjohnston: renumbered test from 002 to 008]

tests/btrfs/008

@@ -0,0 +1,85 @@
+#! /bin/bash
+# FS QA Test No. btrfs/008
+#
+# btrfs send ENOENT regression test, from a user report on linux-btrfs
+#
+#-----------------------------------------------------------------------
+# 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/$$
+tmp_dir=send_temp_$seq
+
+status=1	# failure is the default!
+
+_cleanup()
+{
+	$BTRFS_UTIL_PROG subvol del $TEST_DIR/$tmp_dir/send/snapshots/backup2 > /dev/null 2>&1
+	$BTRFS_UTIL_PROG subvol del $TEST_DIR/$tmp_dir/send/snapshots/backup3 > /dev/null 2>&1
+	$BTRFS_UTIL_PROG subvol del $TEST_DIR/$tmp_dir/send > /dev/null 2>&1
+	rm -rf $TEST_DIR/$tmp_dir
+	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
+
+_scratch_mkfs > /dev/null 2>&1
+
+#receive needs to be able to setxattrs, including the selinux context, if we use
+#the normal nfs context thing it screws up our ability to set the
+#security.selinux xattrs so we need to disable this for this test
+export SELINUX_MOUNT_OPTIONS=""
+
+_scratch_mount
+
+mkdir $TEST_DIR/$tmp_dir
+$BTRFS_UTIL_PROG subvol create $TEST_DIR/$tmp_dir/send \
+	> $seqres.full 2>&1 || _fail "failed subvol create"
+work_dir="$TEST_DIR/$tmp_dir/send"
+mkdir $work_dir/testdir
+mkdir $work_dir/testdir/1/
+mkdir $work_dir/testdir/2/
+dd if=/dev/urandom  of=$work_dir/testdir/aa count=16 > /dev/null 2>&1
+dd if=/dev/urandom  of=$work_dir/testdir/bb count=16 > /dev/null 2>&1
+
+mkdir $work_dir/snapshots
+$BTRFS_UTIL_PROG sub snap -r $work_dir $work_dir/snapshots/backup2 \
+	>> $seqres.full 2>&1 || _fail "failed backup2"
+$BTRFS_UTIL_PROG sub snap -r $work_dir $work_dir/snapshots/backup3 \
+	>> $seqres.full 2>&1 || _fail "failed backup3"
+$BTRFS_UTIL_PROG send $work_dir/snapshots/backup3/ -f $TEST_DIR/$tmp_dir/blah \
+	>> $seqres.full 2>&1 || _fail "send failed"
+$BTRFS_UTIL_PROG receive $SCRATCH_MNT -vvvv -f $TEST_DIR/$tmp_dir/blah \
+	>> $seqres.full 2>&1 || _fail "receive failed"
+
+echo "Silence is golden"
+status=0 ; exit

tests/btrfs/008.out

@@ -0,0 +1,2 @@
+QA output created by 008
+Silence is golden

tests/btrfs/group

@@ -10,3 +10,4 @@
 005 auto
 006 auto quick
 007 auto rw metadata
+008 auto quick