2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2016 Facebook. All Rights Reserved.
7 # Test free space tree mount options.
10 _begin_fstest auto quick
12 # Import common functions.
15 # real QA test starts here
19 _require_btrfs_command inspect-internal dump-super
20 _require_btrfs_fs_feature free_space_tree
21 # Zoned btrfs does not support space_cache(v1)
22 _require_non_zoned_device "${SCRATCH_DEV}"
26 _scratch_mkfs >/dev/null 2>&1
27 # Future proof against btrfs-progs making space_cache=v2 filesystems by
29 _scratch_mount -o clear_cache,space_cache=v1
35 _scratch_mkfs >/dev/null 2>&1
36 _scratch_mount -o space_cache=v2
42 compat_ro="$($BTRFS_UTIL_PROG inspect-internal dump-super "$SCRATCH_DEV" | \
43 sed -rn 's/^compat_ro_flags\s+(.*)$/\1/p')"
44 if ((compat_ro & 0x1)); then
45 echo "free space tree is enabled"
47 echo "free space tree is disabled"
51 # Mount options might interfere.
52 export MOUNT_OPTIONS=""
54 # When the free space tree is not enabled:
55 # -o space_cache=v1: keep using the old free space cache
56 # -o space_cache=v2: enable the free space tree
57 # -o clear_cache,space_cache=v2: clear the free space cache and enable the free space tree
58 # We don't check the no options case or plain space_cache as that will change
59 # in the future to turn on space_cache=v2.
62 echo "Using free space cache"
63 _scratch_mount -o space_cache=v1
68 echo "Enabling free space tree"
69 _scratch_mount -o space_cache=v2
74 echo "Disabling free space cache and enabling free space tree"
75 _scratch_mount -o clear_cache,space_cache=v2
79 # When the free space tree is enabled:
80 # -o nospace_cache, -o space_cache=v1: error
81 # no options, -o space_cache=v2: keep using the free space tree
82 # -o clear_cache, -o clear_cache,space_cache=v2: clear and recreate the free space tree
83 # -o clear_cache,nospace_cache: clear the free space tree
84 # -o clear_cache,space_cache=v1: clear the free space tree, enable the free space cache
87 echo "Trying to mount without free space tree"
88 _try_scratch_mount -o nospace_cache >/dev/null 2>&1 || echo "mount failed"
89 _try_scratch_mount -o space_cache=v1 >/dev/null 2>&1 || echo "mount failed"
92 echo "Mounting existing free space tree"
96 _scratch_mount -o space_cache=v2
101 echo "Recreating free space tree"
102 _scratch_mount -o clear_cache,space_cache=v2
106 _scratch_mount -o clear_cache
111 echo "Disabling free space tree"
112 _scratch_mount -o clear_cache,nospace_cache
117 echo "Reverting to free space cache"
118 _scratch_mount -o clear_cache,space_cache=v1