Maximum size calculation is trivial for the raw format: it's just the requested image size (because there is no metadata).
Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com> --- block/raw-format.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/block/raw-format.c b/block/raw-format.c index 86fbc65..cc88540 100644 --- a/block/raw-format.c +++ b/block/raw-format.c @@ -312,6 +312,27 @@ static int64_t raw_getlength(BlockDriverState *bs) return s->size; } +static void raw_measure(QemuOpts *opts, BlockDriverState *in_bs, + BlockMeasureInfo *info, + Error **errp) +{ + if (in_bs) { + int64_t ssize = bdrv_getlength(in_bs); + if (ssize < 0) { + error_setg_errno(errp, -ssize, "Unable to get image size"); + return; + } + info->required_bytes = ssize; + } else { + info->required_bytes = + ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), + BDRV_SECTOR_SIZE); + } + + /* Unallocated sectors count towards the file size in raw images */ + info->fully_allocated_bytes = info->required_bytes; +} + static int raw_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) { return bdrv_get_info(bs->file->bs, bdi); @@ -477,6 +498,7 @@ BlockDriver bdrv_raw = { .bdrv_truncate = &raw_truncate, .bdrv_getlength = &raw_getlength, .has_variable_length = true, + .bdrv_measure = &raw_measure, .bdrv_get_info = &raw_get_info, .bdrv_refresh_limits = &raw_refresh_limits, .bdrv_probe_blocksizes = &raw_probe_blocksizes, -- 2.9.3