| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2016 Facebook. All Rights Reserved. |
| # |
| # FS QA Test 131 |
| # |
| # Test free space tree mount options. |
| # |
| seq=`basename $0` |
| seqres=$RESULT_DIR/$seq |
| echo "QA output created by $seq" |
| |
| here=`pwd` |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| cd / |
| rm -f $tmp.* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| |
| # remove previous $seqres.full before test |
| rm -f $seqres.full |
| |
| # real QA test starts here |
| |
| _supported_fs btrfs |
| _require_scratch |
| _require_btrfs_command inspect-internal dump-super |
| _require_btrfs_fs_feature free_space_tree |
| |
| mkfs_v1() |
| { |
| _scratch_mkfs >/dev/null 2>&1 |
| # Future proof against btrfs-progs making space_cache=v2 filesystems by |
| # default. |
| _scratch_mount -o clear_cache,space_cache=v1 |
| _scratch_unmount |
| } |
| |
| mkfs_v2() |
| { |
| _scratch_mkfs >/dev/null 2>&1 |
| _scratch_mount -o space_cache=v2 |
| _scratch_unmount |
| } |
| |
| check_fst_compat() |
| { |
| compat_ro="$($BTRFS_UTIL_PROG inspect-internal dump-super "$SCRATCH_DEV" | \ |
| sed -rn 's/^compat_ro_flags\s+(.*)$/\1/p')" |
| if ((compat_ro & 0x1)); then |
| echo "free space tree is enabled" |
| else |
| echo "free space tree is disabled" |
| fi |
| } |
| |
| # Mount options might interfere. |
| export MOUNT_OPTIONS="" |
| |
| # When the free space tree is not enabled: |
| # -o space_cache=v1: keep using the old free space cache |
| # -o space_cache=v2: enable the free space tree |
| # -o clear_cache,space_cache=v2: clear the free space cache and enable the free space tree |
| # We don't check the no options case or plain space_cache as that will change |
| # in the future to turn on space_cache=v2. |
| |
| mkfs_v1 |
| echo "Using free space cache" |
| _scratch_mount -o space_cache=v1 |
| check_fst_compat |
| _scratch_unmount |
| |
| mkfs_v1 |
| echo "Enabling free space tree" |
| _scratch_mount -o space_cache=v2 |
| check_fst_compat |
| _scratch_unmount |
| |
| mkfs_v1 |
| echo "Disabling free space cache and enabling free space tree" |
| _scratch_mount -o clear_cache,space_cache=v2 |
| check_fst_compat |
| _scratch_unmount |
| |
| # When the free space tree is enabled: |
| # -o nospace_cache, -o space_cache=v1: error |
| # no options, -o space_cache=v2: keep using the free space tree |
| # -o clear_cache, -o clear_cache,space_cache=v2: clear and recreate the free space tree |
| # -o clear_cache,nospace_cache: clear the free space tree |
| # -o clear_cache,space_cache=v1: clear the free space tree, enable the free space cache |
| |
| mkfs_v2 |
| echo "Trying to mount without free space tree" |
| _try_scratch_mount -o nospace_cache >/dev/null 2>&1 || echo "mount failed" |
| _try_scratch_mount -o space_cache=v1 >/dev/null 2>&1 || echo "mount failed" |
| |
| mkfs_v2 |
| echo "Mounting existing free space tree" |
| _scratch_mount |
| check_fst_compat |
| _scratch_unmount |
| _scratch_mount -o space_cache=v2 |
| check_fst_compat |
| _scratch_unmount |
| |
| mkfs_v2 |
| echo "Recreating free space tree" |
| _scratch_mount -o clear_cache,space_cache=v2 |
| check_fst_compat |
| _scratch_unmount |
| mkfs_v2 |
| _scratch_mount -o clear_cache |
| check_fst_compat |
| _scratch_unmount |
| |
| mkfs_v2 |
| echo "Disabling free space tree" |
| _scratch_mount -o clear_cache,nospace_cache |
| check_fst_compat |
| _scratch_unmount |
| |
| mkfs_v2 |
| echo "Reverting to free space cache" |
| _scratch_mount -o clear_cache,space_cache=v1 |
| check_fst_compat |
| _scratch_unmount |
| |
| # success, all done |
| status=0 |
| exit |