btrfs: test tempfsid with device add, seed, and balance

Make sure that basic functions such as seeding and device add fail,
while balance runs successfully with tempfsid.

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>

diff --git a/tests/btrfs/315 b/tests/btrfs/315
new file mode 100755 (executable)
index 0000000..7e5c74d
--- /dev/null
+++ b/tests/btrfs/315
@@ -0,0 +1,91 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2024 Oracle. All Rights Reserved.
+#
+# FS QA Test 315
+#
+# Verify if the seed and device add to a tempfsid filesystem fails
+# and balance devices is successful.
+#
+. ./common/preamble
+_begin_fstest auto quick volume seed balance tempfsid
+
+_cleanup()
+{
+       cd /
+       $UMOUNT_PROG $tempfsid_mnt 2>/dev/null
+       rm -r -f $tmp.*
+       rm -r -f $tempfsid_mnt
+}
+
+. ./common/filter.btrfs
+
+_supported_fs btrfs
+_require_scratch_dev_pool 3
+_require_btrfs_fs_feature temp_fsid
+
+_scratch_dev_pool_get 3
+
+# mount point for the tempfsid device
+tempfsid_mnt=$TEST_DIR/$seq/tempfsid_mnt
+
+_filter_mount_error()
+{
+       # There are two different errors that occur at the output when
+       # mounting fails; as shown below, pick out the common part. And,
+       # remove the dmesg line.
+
+       # mount: <mnt-point>: mount(2) system call failed: File exists.
+
+       # mount: <mnt-point>: fsconfig system call failed: File exists.
+       # dmesg(1) may have more information after failed mount system call.
+
+       grep -v dmesg | _filter_test_dir | sed -e "s/mount(2)\|fsconfig//g"
+}
+
+seed_device_must_fail()
+{
+       echo ---- $FUNCNAME ----
+
+       mkfs_clone ${SCRATCH_DEV} ${SCRATCH_DEV_NAME[1]}
+
+       $BTRFS_TUNE_PROG -S 1 ${SCRATCH_DEV}
+       $BTRFS_TUNE_PROG -S 1 ${SCRATCH_DEV_NAME[1]}
+
+       _scratch_mount 2>&1 | _filter_scratch
+       _mount ${SCRATCH_DEV_NAME[1]} ${tempfsid_mnt} 2>&1 | _filter_mount_error
+}
+
+device_add_must_fail()
+{
+       echo ---- $FUNCNAME ----
+
+       mkfs_clone ${SCRATCH_DEV} ${SCRATCH_DEV_NAME[1]}
+       _scratch_mount
+       _mount ${SCRATCH_DEV_NAME[1]} ${tempfsid_mnt}
+
+       $XFS_IO_PROG -fc 'pwrite -S 0x61 0 9000' $SCRATCH_MNT/foo | \
+                                                       _filter_xfs_io
+
+$BTRFS_UTIL_PROG device add -f ${SCRATCH_DEV_NAME[2]} ${tempfsid_mnt} 2>&1 | \
+               grep -v "Performing full device TRIM" | _filter_scratch_pool
+
+       echo Balance must be successful
+       _run_btrfs_balance_start ${tempfsid_mnt}
+}
+
+mkdir -p $tempfsid_mnt
+
+seed_device_must_fail
+
+_scratch_unmount
+_cleanup
+mkdir -p $tempfsid_mnt
+
+device_add_must_fail
+
+_scratch_dev_pool_put
+
+# success, all done
+status=0
+exit

diff --git a/tests/btrfs/315.out b/tests/btrfs/315.out
new file mode 100644 (file)
index 0000000..3ea7a35
--- /dev/null
+++ b/tests/btrfs/315.out
@@ -0,0 +1,10 @@
+QA output created by 315
+---- seed_device_must_fail ----
+mount: SCRATCH_MNT: WARNING: source write-protected, mounted read-only.
+mount: TEST_DIR/315/tempfsid_mnt:  system call failed: File exists.
+---- device_add_must_fail ----
+wrote 9000/9000 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+ERROR: error adding device 'SCRATCH_DEV': Invalid argument
+Balance must be successful
+Done, had to relocate 3 out of 3 chunks