2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2016 Facebook. All Rights Reserved.
7 # Test free space tree mount options.
10 seqres=$RESULT_DIR/$seq
11 echo "QA output created by $seq"
15 status=1 # failure is the default!
16 trap "_cleanup; exit \$status" 0 1 2 3 15
24 # get standard environment, filters and checks
28 # remove previous $seqres.full before test
31 # real QA test starts here
35 _require_btrfs_command inspect-internal dump-super
36 _require_btrfs_fs_feature free_space_tree
40 _scratch_mkfs >/dev/null 2>&1
41 # Future proof against btrfs-progs making space_cache=v2 filesystems by
43 _scratch_mount -o clear_cache,space_cache=v1
49 _scratch_mkfs >/dev/null 2>&1
50 _scratch_mount -o space_cache=v2
56 compat_ro="$($BTRFS_UTIL_PROG inspect-internal dump-super "$SCRATCH_DEV" | \
57 sed -rn 's/^compat_ro_flags\s+(.*)$/\1/p')"
58 if ((compat_ro & 0x1)); then
59 echo "free space tree is enabled"
61 echo "free space tree is disabled"
65 # Mount options might interfere.
66 export MOUNT_OPTIONS=""
68 # When the free space tree is not enabled:
69 # -o space_cache=v1: keep using the old free space cache
70 # -o space_cache=v2: enable the free space tree
71 # -o clear_cache,space_cache=v2: clear the free space cache and enable the free space tree
72 # We don't check the no options case or plain space_cache as that will change
73 # in the future to turn on space_cache=v2.
76 echo "Using free space cache"
77 _scratch_mount -o space_cache=v1
82 echo "Enabling free space tree"
83 _scratch_mount -o space_cache=v2
88 echo "Disabling free space cache and enabling free space tree"
89 _scratch_mount -o clear_cache,space_cache=v2
93 # When the free space tree is enabled:
94 # -o nospace_cache, -o space_cache=v1: error
95 # no options, -o space_cache=v2: keep using the free space tree
96 # -o clear_cache, -o clear_cache,space_cache=v2: clear and recreate the free space tree
97 # -o clear_cache,nospace_cache: clear the free space tree
98 # -o clear_cache,space_cache=v1: clear the free space tree, enable the free space cache
101 echo "Trying to mount without free space tree"
102 _try_scratch_mount -o nospace_cache >/dev/null 2>&1 || echo "mount failed"
103 _try_scratch_mount -o space_cache=v1 >/dev/null 2>&1 || echo "mount failed"
106 echo "Mounting existing free space tree"
110 _scratch_mount -o space_cache=v2
115 echo "Recreating free space tree"
116 _scratch_mount -o clear_cache,space_cache=v2
120 _scratch_mount -o clear_cache
125 echo "Disabling free space tree"
126 _scratch_mount -o clear_cache,nospace_cache
131 echo "Reverting to free space cache"
132 _scratch_mount -o clear_cache,space_cache=v1