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shared/298: Wire btrfs support in get_free_sectors

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Add support for btrfs in shared/298. Achieve this by introducing 2
new awk scripts that parse relevant btrfs structures and print holes.
Additionally modify the test to create larger - 3gb filesystem in the
case of btrfs. This is needed so that distinct block groups are used
for data and metadata.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
This commit is contained in:
Nikolay Borisov
2019-02-22 12:04:25 +02:00
committed by Eryu Guan
parent 202779bc09
commit 0680ff2ea5
3 changed files with 238 additions and 3 deletions
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tests/shared/298
+30 -3
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@@ -15,14 +15,24 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
. ./common/rc
_supported_fs ext4 xfs
_supported_fs ext4 xfs btrfs
_supported_os Linux
_require_test
_require_loop
_require_fstrim
_require_xfs_io_command "fiemap"
_require_fs_space $TEST_DIR 307200
if [ "$FSTYP" = "btrfs" ]; then
# 3g for btrfs to have distinct bgs
_require_fs_space $TEST_DIR 3145728
fssize=3000
else
_require_fs_space $TEST_DIR 307200
fssize=300
fi
[ "$FSTYP" = "ext4" ] && _require_dumpe2fs
[ "$FSTYP" = "btrfs" ] && _require_btrfs_command inspect-internal dump-super
[ "$FSTYP" = "btrfs" ] && _require_btrfs_command inspect-internal dump-tree
_cleanup()
{
@@ -61,6 +71,22 @@ get_free_sectors()
$AWK_PROG -v spb=$sectors_per_block -v agsize=$agsize \
'{ print spb * ($1 * agsize + $2), spb * ($1 * agsize + $2 + $3) - 1 }'
;;
btrfs)
local device_size=$($BTRFS_UTIL_PROG filesystem show --raw $loop_mnt 2>&1 \
| sed -n "s/^.*size \([0-9]*\).*$/\1/p")
local nodesize=$($BTRFS_UTIL_PROG inspect-internal dump-super $img_file \
| sed -n 's/nodesize\s*\(.*\)/\1/p')
# Get holes within block groups
$BTRFS_UTIL_PROG inspect-internal dump-tree -t extent $img_file \
| $AWK_PROG -v sectorsize=512 -v nodesize=$nodesize -f $here/src/parse-extent-tree.awk
# Get holes within unallocated space on disk
$BTRFS_UTIL_PROG inspect-internal dump-tree -t dev $img_file \
| $AWK_PROG -v sectorsize=512 -v devsize=$device_size -f $here/src/parse-dev-tree.awk
;;
esac
}
@@ -105,7 +131,7 @@ here=`pwd`
tmp=`mktemp -d`
img_file=$TEST_DIR/$$.fs
dd if=/dev/zero of=$img_file bs=1M count=300 &> /dev/null
dd if=/dev/zero of=$img_file bs=1M count=$fssize &> /dev/null
loop_dev=$(_create_loop_device $img_file)
loop_mnt=$tmp/loop_mnt
@@ -118,6 +144,7 @@ merged_sectors="$tmp/merged_free_sectors"
mkdir $loop_mnt
[ "$FSTYP" = "xfs" ] && MKFS_OPTIONS="-f $MKFS_OPTIONS"
[ "$FSTYP" = "btrfs" ] && MKFS_OPTIONS="$MKFS_OPTIONS -f -dsingle -msingle"
_mkfs_dev $loop_dev
_mount $loop_dev $loop_mnt