[PATCHv2 2/2] btrfs: Test subvolume delete --subvolid feature

[Marcos Paulo de Souza <marcos.souza.org@gmail.com>]

From: Marcos Paulo de Souza <mpdesouza@suse.com>

Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
---
Changes from v1:
* Added some prints printing what is being tested
* The test now uses the _btrfs_get_subvolid to get subvolumeids instead of using
  plain integers

 tests/btrfs/203     | 73 +++++++++++++++++++++++++++++++++++++++++++++
 tests/btrfs/203.out | 14 +++++++++
 tests/btrfs/group   |  1 +
 3 files changed, 88 insertions(+)
 create mode 100755 tests/btrfs/203
 create mode 100644 tests/btrfs/203.out

diff --git a/tests/btrfs/203 b/tests/btrfs/203
new file mode 100755
index 00000000..b9f1391f
--- /dev/null
+++ b/tests/btrfs/203
@@ -0,0 +1,73 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2020 SUSE Linux Products GmbH. All Rights Reserved.
+#
+# FSQA Test No. 203
+#
+# Test subvolume deletion using the subvolume id, even when the subvolume in
+# question is in a different mount space.
+#
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+tmp=/tmp/$$
+status=1	# failure is the default!
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/filter.btrfs
+
+# real QA test starts here
+_supported_fs btrfs
+_supported_os Linux
+_require_scratch
+_require_btrfs_command subvolume delete --subvolid
+
+_scratch_mkfs > /dev/null 2>&1
+_scratch_mount
+
+# Test creating a normal subvolumes
+_run_btrfs_util_prog subvolume create $SCRATCH_MNT/subvol1 | _filter_scratch
+_run_btrfs_util_prog subvolume create $SCRATCH_MNT/subvol2 | _filter_scratch
+_run_btrfs_util_prog subvolume create $SCRATCH_MNT/subvol3 | _filter_scratch
+
+echo "Current subvolume ids:"
+$BTRFS_UTIL_PROG subvolume list $SCRATCH_MNT | awk '{ print $NF }'
+
+# Delete the subvolume subvol1 using it's subvolume id
+SUBVOLID=$(_btrfs_get_subvolid $SCRATCH_MNT subvol1)
+$BTRFS_UTIL_PROG subvolume delete --subvolid $SUBVOLID  $SCRATCH_MNT | _filter_scratch
+
+echo "After deleting one subvolume:"
+# should present only two subvolumes
+$BTRFS_UTIL_PROG subvolume list $SCRATCH_MNT | awk '{ print $NF }'
+
+umount $SCRATCH_MNT
+
+# Now we mount the subvol2, which makes subvol3 not accessible for this mount
+# point, but we should be able to delete it using it's subvolume id
+$MOUNT_PROG -o subvol=subvol2 $SCRATCH_DEV $SCRATCH_MNT
+SUBVOLID=$(_btrfs_get_subvolid $SCRATCH_MNT subvol3)
+$BTRFS_UTIL_PROG subvolume delete --subvolid $SUBVOLID $SCRATCH_MNT | _filter_scratch
+
+echo "Last remaining subvolume:"
+$BTRFS_UTIL_PROG subvolume list $SCRATCH_MNT | awk '{ print $NF }'
+
+umount $SCRATCH_MNT
+
+# now mount the rootfs
+_scratch_mount
+
+# Delete the subvol2
+SUBVOLID=$(_btrfs_get_subvolid $SCRATCH_MNT subvol2)
+$BTRFS_UTIL_PROG subvolume delete --subvolid $SUBVOLID  $SCRATCH_MNT | _filter_scratch
+
+echo "All subvolumes removed."
+$BTRFS_UTIL_PROG subvolume list $SCRATCH_MNT | awk '{ print $NF }'
+
+umount $SCRATCH_MNT
+
+# success, all done
+status=0
+exit
diff --git a/tests/btrfs/203.out b/tests/btrfs/203.out
new file mode 100644
index 00000000..bca18c32
--- /dev/null
+++ b/tests/btrfs/203.out
@@ -0,0 +1,14 @@
+QA output created by 203
+Current subvolume ids:
+subvol1
+subvol2
+subvol3
+Delete subvolume (no-commit): 'SCRATCH_MNT/subvol1'
+After deleting one subvolume:
+subvol2
+subvol3
+Delete subvolume (no-commit): 'SCRATCH_MNT/subvol3'
+Last remaining subvolume:
+subvol2
+Delete subvolume (no-commit): 'SCRATCH_MNT/subvol2'
+All subvolumes removed.
diff --git a/tests/btrfs/group b/tests/btrfs/group
index 79f85e97..e7744217 100644
--- a/tests/btrfs/group
+++ b/tests/btrfs/group
@@ -204,3 +204,4 @@
 200 auto quick send clone
 201 auto quick punch log
 202 auto quick subvol snapshot
+203 auto quick subvol
-- 
2.24.0