Files
apfstests/tests/btrfs/131
T
Eryu Guan 69eb6281a9 fstests: _fail test by default when _scratch_mount fails
Previously _scratch_mount didn't check the mount status and most
tests continue to run even if the mount failed (unless test checks
for the mount status explicitly). This would result in running tests
on the underlying filesystem (usually rootfs) and implicit test
failures, and such failures can be annoying and are usually hard to
debug.

Now _fail test by default if _scratch_mount failed and introduce
_try_scratch_mount for tests that need to check mount results
themselves.

Suggested-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
2018-02-22 14:02:44 +08:00

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#! /bin/bash
# FS QA Test 131
#
# Test free space tree mount options.
#
#-----------------------------------------------------------------------
# Copyright (c) 2016 Facebook. All Rights Reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#-----------------------------------------------------------------------
#
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 $seqres.full
# real QA test starts here
_supported_fs btrfs
_supported_os Linux
_require_scratch
_require_btrfs_command inspect-internal dump-super
mkfs_v1()
{
_scratch_mkfs >/dev/null 2>&1
# Future proof against btrfs-progs making space_cache=v2 filesystems by
# default.
_scratch_mount -o clear_cache,space_cache=v1
_scratch_unmount
}
mkfs_v2()
{
_scratch_mkfs >/dev/null 2>&1
_scratch_mount -o space_cache=v2
_scratch_unmount
}
check_fst_compat()
{
compat_ro="$($BTRFS_UTIL_PROG inspect-internal dump-super "$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