On Wed, Apr 11, 2018 at 04:47:30PM -0700, Omar Sandoval wrote:
> From: Omar Sandoval <osandov@xxxxxx>
>
> This test creates a 256 MB filesystem and then writes a 200 MB file.
> With separate data and metadata, Btrfs will run out of data space since
> it needs to allocate some metadata space. Use mixed mode, which is the
> recommendation for smaller filesystems.
>
> Signed-off-by: Omar Sandoval <osandov@xxxxxx>
> ---
> tests/generic/427 | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/tests/generic/427 b/tests/generic/427
> index 9cde5f50..b2cb4526 100755
> --- a/tests/generic/427
> +++ b/tests/generic/427
> @@ -55,6 +55,8 @@ _require_test_program "feature"
> _require_aiodio aio-dio-eof-race
>
> # limit the filesystem size, to save the time of filling filesystem
> +# Btrfs needs to use mixed mode for such a small filesystem
> +[ "$FSTYP" = "btrfs" ] && MKFS_OPTIONS="$MKFS_OPTIONS -M"
_scratch_mkfs_sized() should already be adding this for small btrfs
filesystems. Yup, it does:
btrfs)
local mixed_opt=
(( fssize <= 100 * 1024 * 1024 )) && mixed_opt='--mixed'
$MKFS_BTRFS_PROG $MKFS_OPTIONS $mixed_opt -b $fssize $SCRATCH_DEV
;;
> _scratch_mkfs_sized $((256 * 1024 * 1024)) >>$seqres.full 2>&1
But this uses a filesystem larger than the mixed mode threshold in
_scratch_mkfs_sized(). Please update the generic threshold rather
than special case this test.
Cheers,
Dave.
--
Dave Chinner
david@xxxxxxxxxxxxx
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