[PATCH v3 08/10] btrfs: verify tempfsid clones using mkfs

[Anand Jain <anand.jain@oracle.com>]

Create appearing to be a clone using the mkfs.btrfs option and test if
the tempfsid is active.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
---
v3:
prerequisite checks are in the function mkfs_clone(), remove from the
testcase.

v2:
 Remove unnecessary function.
 Add clone group
 use $UMOUNT_PROG
 Let _cp_reflink fail on the stdout.

 tests/btrfs/313     | 53 +++++++++++++++++++++++++++++++++++++++++++++
 tests/btrfs/313.out | 16 ++++++++++++++
 2 files changed, 69 insertions(+)
 create mode 100755 tests/btrfs/313
 create mode 100644 tests/btrfs/313.out

diff --git a/tests/btrfs/313 b/tests/btrfs/313
new file mode 100755
index 000000000000..1f50ee78ab99
--- /dev/null
+++ b/tests/btrfs/313
@@ -0,0 +1,53 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2024 Oracle.  All Rights Reserved.
+#
+# FS QA Test 313
+#
+# Functional test for the tempfsid, clone devices created using the mkfs option.
+#
+. ./common/preamble
+_begin_fstest auto quick clone tempfsid
+
+_cleanup()
+{
+	cd /
+	$UMOUNT_PROG $mnt1 > /dev/null 2>&1
+	rm -r -f $tmp.*
+	rm -r -f $mnt1
+}
+
+. ./common/filter.btrfs
+. ./common/reflink
+
+_supported_fs btrfs
+_require_cp_reflink
+_require_btrfs_sysfs_fsid
+_require_scratch_dev_pool 2
+_require_btrfs_fs_feature temp_fsid
+
+_scratch_dev_pool_get 2
+
+mnt1=$TEST_DIR/$seq/mnt1
+mkdir -p $mnt1
+
+echo ---- clone_uuids_verify_tempfsid ----
+mkfs_clone ${SCRATCH_DEV_NAME[0]} ${SCRATCH_DEV_NAME[1]}
+
+echo Mounting original device
+_mount ${SCRATCH_DEV_NAME[0]} $SCRATCH_MNT
+check_fsid ${SCRATCH_DEV_NAME[0]}
+
+echo Mounting cloned device
+_mount ${SCRATCH_DEV_NAME[1]} $mnt1
+check_fsid ${SCRATCH_DEV_NAME[1]}
+
+$XFS_IO_PROG -fc 'pwrite -S 0x61 0 9000' $SCRATCH_MNT/foo | _filter_xfs_io
+echo cp reflink must fail
+_cp_reflink $SCRATCH_MNT/foo $mnt1/bar 2>&1 | _filter_testdir_and_scratch
+
+_scratch_dev_pool_put
+
+# success, all done
+status=0
+exit
diff --git a/tests/btrfs/313.out b/tests/btrfs/313.out
new file mode 100644
index 000000000000..7a089d2c29c5
--- /dev/null
+++ b/tests/btrfs/313.out
@@ -0,0 +1,16 @@
+QA output created by 313
+---- clone_uuids_verify_tempfsid ----
+Mounting original device
+On disk fsid:		FSID
+Metadata uuid:		FSID
+Temp fsid:		FSID
+Tempfsid status:	0
+Mounting cloned device
+On disk fsid:		FSID
+Metadata uuid:		FSID
+Temp fsid:		TEMPFSID
+Tempfsid status:	1
+wrote 9000/9000 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+cp reflink must fail
+cp: failed to clone 'TEST_DIR/313/mnt1/bar' from 'SCRATCH_MNT/foo': Invalid cross-device link
-- 
2.39.3