[cc linux-xfs list for xfs test]
On Fri, Apr 27, 2018 at 04:22:54PM +0800, Zorro Lang wrote:
> When test on large SCRATCH_DEV, grow a small XFS to huge size is a
> horrible thing (e.g grow 128m to 500T). So add a helper named
> _scratch_xfs_growfs_limited() to do below things:
>
> 1) If --large-fs is used, limit growfs size.
> 2) If a limit size parameter is specified, make sure growfs won't
> beyond this size.
>
> Signed-off-by: Zorro Lang <zlang@xxxxxxxxxx>
Sorry for the late review..
This looks fine to me, but I'd like to let XFS developers to take a look
too, I'm not sure if "10 times larger" is a sane default value.
BTW, the subject doesn't quite describe what the patch does:
"xfs: limit xfs_growfs size if test with --large-fs"
The patch also limits the growfs size based on the user-specified fs
size.
> ---
> common/xfs | 34 ++++++++++++++++++++++++++++++++++
> tests/xfs/002 | 2 +-
> tests/xfs/127 | 2 +-
> tests/xfs/233 | 2 +-
> 4 files changed, 37 insertions(+), 3 deletions(-)
>
> diff --git a/common/xfs b/common/xfs
> index e0bc3f43..6200297c 100644
> --- a/common/xfs
> +++ b/common/xfs
> @@ -721,3 +721,37 @@ _require_xfs_db_write_array()
> rm -f $TEST_DIR/$seq.img
> [ $supported -eq 0 ] && _notrun "xfs_db write can't support array"
> }
> +
> +# If test on large device or a limit size is specified, this helper make sure
> +# xfs_growfs won't beyond this limit (try to grow 10 times current fs size by
> +# default).
> +# usage: _scratch_xfs_growfs_limited [size_by_byte]
> +_scratch_xfs_growfs_limited()
I think we could just name it as _scratch_xfs_growfs().
Thanks,
Eryu
> +{
> +
> + local limit_size="$1"
> + local option=""
> +
> + if [ "$LARGE_SCRATCH_DEV" = "yes" -o -n "$limit_size" ]; then
> + local tmp=`mktemp -u`
> + xfs_info $SCRATCH_MNT | _filter_mkfs > /dev/null 2>$tmp.info
> + . $tmp.info
> + rm -f $tmp.info
> +
> + local fs_size=$((dbsize * dblocks))
> + local dev_size_kb=`_get_device_size $SCRATCH_DEV`
> +
> + # default limit_size is 10 times current fs size.
> + if [ -z "$limit_size" ]; then
> + limit_size=$((fs_size * 10))
> + fi
> + # don't limit growfs size if device size is smaller
> + if [ $((dev_size_kb * 1024)) -gt $limit_size ]; then
> + option="-D $((limit_size / dbsize))"
> + else
> + option=""
> + fi
> + fi
> +
> + $XFS_GROWFS_PROG $option $SCRATCH_MNT
> +}
> diff --git a/tests/xfs/002 b/tests/xfs/002
> index 741117be..42d2e2d7 100755
> --- a/tests/xfs/002
> +++ b/tests/xfs/002
> @@ -68,7 +68,7 @@ _scratch_xfs_db -x -c "sb 2" -c "type data" -c "write fill 0xff 224 4"
> _scratch_mount
>
> # This should pass
> -$XFS_GROWFS_PROG $SCRATCH_MNT >> $seqres.full 2>&1 || _fail "growfs failed"
> +_scratch_xfs_growfs_limited >> $seqres.full 2>&1 || _fail "growfs failed"
>
> # success, all done
> status=0
> diff --git a/tests/xfs/127 b/tests/xfs/127
> index 9df99904..c05fcee9 100755
> --- a/tests/xfs/127
> +++ b/tests/xfs/127
> @@ -61,7 +61,7 @@ _cp_reflink $testdir/original $testdir/copy1
> _cp_reflink $testdir/copy1 $testdir/copy2
>
> echo "Grow fs"
> -$XFS_GROWFS_PROG $SCRATCH_MNT 2>&1 | _filter_growfs >> $seqres.full
> +_scratch_xfs_growfs_limited 2>&1 | _filter_growfs >> $seqres.full
> _scratch_cycle_mount
>
> echo "Create more reflink copies"
> diff --git a/tests/xfs/233 b/tests/xfs/233
> index e61c444d..a0dd42e7 100755
> --- a/tests/xfs/233
> +++ b/tests/xfs/233
> @@ -59,7 +59,7 @@ cp -p $testdir/original $testdir/copy1
> cp -p $testdir/copy1 $testdir/copy2
>
> echo "Grow fs"
> -$XFS_GROWFS_PROG $SCRATCH_MNT 2>&1 | _filter_growfs >> $seqres.full
> +_scratch_xfs_growfs_limited 2>&1 | _filter_growfs >> $seqres.full
> _scratch_cycle_mount
>
> echo "Create more copies"
> --
> 2.14.3
>
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