motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-03 15:53:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

mirror: add buf-size argument to drive-mirror

Browse source 
This makes sense when the next commit starts using the extra buffer space
to perform many I/O operations asynchronously.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini 2013-01-22 09:03:13 +01:00 • committed by Kevin Wolf
parent bd48bde8f0
commit 08e4ed6cde
8 changed files with 56 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

8
block/mirror.c
View file

@ -207,7 +207,7 @@ static void coroutine_fn mirror_run(void *opaque)
if (backing_filename[0] && !s->target->backing_hd) {
bdrv_get_info(s->target, &bdi);
if (s->granularity < bdi.cluster_size) {
s->buf_size = bdi.cluster_size;
s->buf_size = MAX(s->buf_size, bdi.cluster_size);
length = (bdrv_getlength(bs) + s->granularity - 1) / s->granularity;
s->cow_bitmap = bitmap_new(length);
}
@ -416,8 +416,8 @@ static BlockJobType mirror_job_type = {
};
void mirror_start(BlockDriverState *bs, BlockDriverState *target,
int64_t speed, int64_t granularity, MirrorSyncMode mode,
BlockdevOnError on_source_error,
int64_t speed, int64_t granularity, int64_t buf_size,
MirrorSyncMode mode, BlockdevOnError on_source_error,
BlockdevOnError on_target_error,
BlockDriverCompletionFunc *cb,
void *opaque, Error **errp)
@ -455,7 +455,7 @@ void mirror_start(BlockDriverState *bs, BlockDriverState *target,
s->target = target;
s->mode = mode;
s->granularity = granularity;
s->buf_size = granularity;
s->buf_size = MAX(buf_size, granularity);
bdrv_set_dirty_tracking(bs, granularity);
bdrv_set_enable_write_cache(s->target, true);