On 7/30/19 12:32 PM, Vladimir Sementsov-Ogievskiy wrote:
> Enabled by default copy_range ignores compress option. It's definitely
> unexpected for user.
>
> It's broken since introduction of copy_range usage in backup in
> 9ded4a011496.
>
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
> ---
> block/backup.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/block/backup.c b/block/backup.c
> index f4aaf08df3..c5f941101a 100644
> --- a/block/backup.c
> +++ b/block/backup.c
> @@ -645,7 +645,7 @@ BlockJob *backup_job_create(const char *job_id,
> BlockDriverState *bs,
> job->cluster_size = cluster_size;
> job->copy_bitmap = copy_bitmap;
> copy_bitmap = NULL;
> - job->use_copy_range = true;
> + job->use_copy_range = !compress; /* compression isn't supported for it */
> job->copy_range_size =
> MIN_NON_ZERO(blk_get_max_transfer(job->common.blk),
> blk_get_max_transfer(job->target));
> job->copy_range_size = MAX(job->cluster_size,
>
Agree, these aren't compatible options. Is this worth a note in
docs/interop/live-block-operations.rst?
Reviewed-by: John Snow <js...@redhat.com>
