[PATCH] fstests: btrfs: check conversion of zoned fileystems

[Johannes Thumshirn <johannes.thumshirn@wdc.com>]

Recently we had a bug where a zoned filesystem could be converted to a
higher data redundancy profile than supported.

Add a test-case to check the conversion on zoned filesystems.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
---
 tests/btrfs/310     | 75 +++++++++++++++++++++++++++++++++++++++++++++
 tests/btrfs/310.out | 31 +++++++++++++++++++
 2 files changed, 106 insertions(+)
 create mode 100755 tests/btrfs/310
 create mode 100644 tests/btrfs/310.out

diff --git a/tests/btrfs/310 b/tests/btrfs/310
new file mode 100755
index 00000000..5a9664d1
--- /dev/null
+++ b/tests/btrfs/310
@@ -0,0 +1,75 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2024 Western Digital Corperation.  All Rights Reserved.
+#
+# FS QA Test 310
+#
+# Test that btrfs convert can ony be run to convert to supported profiles on a
+# zoned filesystem
+#
+. ./common/preamble
+_begin_fstest volume raid convert
+
+_fixed_by_kernel_commit XXXXXXXXXX \
+	"btrfs: zoned: don't skip block group profile checks on conv zones"
+
+. common/filter
+. common/filter.btrfs
+
+_supported_fs btrfs
+_require_scratch_dev_pool 4
+_require_zoned_device "$SCRATCH_DEV"
+
+
+_filter_convert()
+{
+	_filter_scratch | \
+	sed -e "s/relocate [0-9]\+ out of [0-9]\+ chunks/relocate X out of X chunks/g"
+}
+
+_filter_add()
+{
+	_filter_scratch | _filter_scratch_pool | \
+  	sed -e "s/Resetting device zones SCRATCH_DEV ([0-9]\+/Resetting device zones SCRATCH_DEV (XXX/g"
+
+}
+
+devs=( $SCRATCH_DEV_POOL )
+
+# Create and mount single device FS
+_scratch_mkfs -msingle -dsingle 2>&1 > /dev/null
+_scratch_mount
+
+# Convert FS to metadata/system DUP
+$BTRFS_UTIL_PROG balance start -f -mconvert=dup -sconvert=dup $SCRATCH_MNT 2>&1 | _filter_convert
+
+# Convert FS to data DUP, must fail
+$BTRFS_UTIL_PROG balance start -dconvert=dup $SCRATCH_MNT 2>&1 | _filter_convert 
+
+# Add device
+$BTRFS_UTIL_PROG device add ${devs[1]} $SCRATCH_MNT | _filter_add
+
+# Convert FS to data RAID1, must fail
+$BTRFS_UTIL_PROG balance start -dconvert=raid1 $SCRATCH_MNT 2>&1 | _filter_convert
+
+# Convert FS to data RAID0, must fail
+$BTRFS_UTIL_PROG balance start -dconvert=raid0 $SCRATCH_MNT 2>&1 | _filter_convert
+
+# Add device
+$BTRFS_UTIL_PROG device add ${devs[2]} $SCRATCH_MNT | _filter_add
+
+# Convert FS to data RAID5, must fail
+$BTRFS_UTIL_PROG balance start -f -dconvert=raid5 $SCRATCH_MNT 2>&1 | _filter_convert
+
+# Add device
+$BTRFS_UTIL_PROG device add ${devs[3]} $SCRATCH_MNT | _filter_add
+
+# Convert FS to data RAID10, must fail
+$BTRFS_UTIL_PROG balance start -dconvert=raid10 $SCRATCH_MNT 2>&1 | _filter_convert
+
+# Convert FS to data RAID6, must fail
+$BTRFS_UTIL_PROG balance start -f -dconvert=raid6 $SCRATCH_MNT 2>&1 | _filter_convert
+
+# success, all done
+status=0
+exit
diff --git a/tests/btrfs/310.out b/tests/btrfs/310.out
new file mode 100644
index 00000000..f1e44af6
--- /dev/null
+++ b/tests/btrfs/310.out
@@ -0,0 +1,31 @@
+QA output created by 310
+Done, had to relocate X out of X chunks
+ERROR: error during balancing 'SCRATCH_MNT': Invalid argument
+There may be more info in syslog - try dmesg | tail
+Resetting device zones SCRATCH_DEV (XXX zones) ...
+ERROR: error during balancing 'SCRATCH_MNT': Invalid argument
+There may be more info in syslog - try dmesg | tail
+ERROR: error during balancing 'SCRATCH_MNT': Invalid argument
+There may be more info in syslog - try dmesg | tail
+Resetting device zones SCRATCH_DEV (XXX zones) ...
+ERROR: error during balancing 'SCRATCH_MNT': Invalid argument
+There may be more info in syslog - try dmesg | tail
+WARNING:
+
+	RAID5/6 support has known problems and is strongly discouraged
+	to be used besides testing or evaluation. It is recommended that
+	you use one of the other RAID profiles.
+	Safety timeout skipped due to --force
+
+Resetting device zones SCRATCH_DEV (XXX zones) ...
+ERROR: error during balancing 'SCRATCH_MNT': Invalid argument
+There may be more info in syslog - try dmesg | tail
+ERROR: error during balancing 'SCRATCH_MNT': Invalid argument
+There may be more info in syslog - try dmesg | tail
+WARNING:
+
+	RAID5/6 support has known problems and is strongly discouraged
+	to be used besides testing or evaluation. It is recommended that
+	you use one of the other RAID profiles.
+	Safety timeout skipped due to --force
+
-- 
2.35.3