diff options
Diffstat (limited to 'block/mirror.c')
| -rw-r--r-- | block/mirror.c | 44 |
1 files changed, 14 insertions, 30 deletions
diff --git a/block/mirror.c b/block/mirror.c index 99da9c0858..a4197bb975 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -22,7 +22,6 @@ #include "qemu/ratelimit.h" #include "qemu/bitmap.h" -#define SLICE_TIME 100000000ULL /* ns */ #define MAX_IN_FLIGHT 16 #define MAX_IO_BYTES (1 << 20) /* 1 Mb */ #define DEFAULT_MIRROR_BUF_SIZE (MAX_IN_FLIGHT * MAX_IO_BYTES) @@ -36,7 +35,6 @@ typedef struct MirrorBuffer { typedef struct MirrorBlockJob { BlockJob common; - RateLimit limit; BlockBackend *target; BlockDriverState *mirror_top_bs; BlockDriverState *source; @@ -121,7 +119,7 @@ static void mirror_iteration_done(MirrorOp *op, int ret) bitmap_set(s->cow_bitmap, chunk_num, nb_chunks); } if (!s->initial_zeroing_ongoing) { - s->common.offset += op->bytes; + block_job_progress_update(&s->common, op->bytes); } } qemu_iovec_destroy(&op->qiov); @@ -449,9 +447,7 @@ static uint64_t coroutine_fn mirror_iteration(MirrorBlockJob *s) assert(io_bytes); offset += io_bytes; nb_chunks -= DIV_ROUND_UP(io_bytes, s->granularity); - if (s->common.speed) { - delay_ns = ratelimit_calculate_delay(&s->limit, io_bytes_acct); - } + delay_ns = block_job_ratelimit_get_delay(&s->common, io_bytes_acct); } return delay_ns; } @@ -596,7 +592,7 @@ static void mirror_throttle(MirrorBlockJob *s) { int64_t now = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); - if (now - s->last_pause_ns > SLICE_TIME) { + if (now - s->last_pause_ns > BLOCK_JOB_SLICE_TIME) { s->last_pause_ns = now; block_job_sleep_ns(&s->common, 0); } else { @@ -792,19 +788,17 @@ static void coroutine_fn mirror_run(void *opaque) block_job_pause_point(&s->common); cnt = bdrv_get_dirty_count(s->dirty_bitmap); - /* s->common.offset contains the number of bytes already processed so - * far, cnt is the number of dirty bytes remaining and - * s->bytes_in_flight is the number of bytes currently being - * processed; together those are the current total operation length */ - s->common.len = s->common.offset + s->bytes_in_flight + cnt; + /* cnt is the number of dirty bytes remaining and s->bytes_in_flight is + * the number of bytes currently being processed; together those are + * the current remaining operation length */ + block_job_progress_set_remaining(&s->common, s->bytes_in_flight + cnt); /* Note that even when no rate limit is applied we need to yield * periodically with no pending I/O so that bdrv_drain_all() returns. - * We do so every SLICE_TIME nanoseconds, or when there is an error, - * or when the source is clean, whichever comes first. - */ + * We do so every BLKOCK_JOB_SLICE_TIME nanoseconds, or when there is + * an error, or when the source is clean, whichever comes first. */ delta = qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - s->last_pause_ns; - if (delta < SLICE_TIME && + if (delta < BLOCK_JOB_SLICE_TIME && s->common.iostatus == BLOCK_DEVICE_IO_STATUS_OK) { if (s->in_flight >= MAX_IN_FLIGHT || s->buf_free_count == 0 || (cnt == 0 && s->in_flight > 0)) { @@ -870,7 +864,8 @@ static void coroutine_fn mirror_run(void *opaque) ret = 0; if (s->synced && !should_complete) { - delay_ns = (s->in_flight == 0 && cnt == 0 ? SLICE_TIME : 0); + delay_ns = (s->in_flight == 0 && + cnt == 0 ? BLOCK_JOB_SLICE_TIME : 0); } trace_mirror_before_sleep(s, cnt, s->synced, delay_ns); block_job_sleep_ns(&s->common, delay_ns); @@ -909,17 +904,6 @@ immediate_exit: block_job_defer_to_main_loop(&s->common, mirror_exit, data); } -static void mirror_set_speed(BlockJob *job, int64_t speed, Error **errp) -{ - MirrorBlockJob *s = container_of(job, MirrorBlockJob, common); - - if (speed < 0) { - error_setg(errp, QERR_INVALID_PARAMETER, "speed"); - return; - } - ratelimit_set_speed(&s->limit, speed, SLICE_TIME); -} - static void mirror_complete(BlockJob *job, Error **errp) { MirrorBlockJob *s = container_of(job, MirrorBlockJob, common); @@ -1004,7 +988,6 @@ static void mirror_drain(BlockJob *job) static const BlockJobDriver mirror_job_driver = { .instance_size = sizeof(MirrorBlockJob), .job_type = BLOCK_JOB_TYPE_MIRROR, - .set_speed = mirror_set_speed, .start = mirror_run, .complete = mirror_complete, .pause = mirror_pause, @@ -1015,7 +998,6 @@ static const BlockJobDriver mirror_job_driver = { static const BlockJobDriver commit_active_job_driver = { .instance_size = sizeof(MirrorBlockJob), .job_type = BLOCK_JOB_TYPE_COMMIT, - .set_speed = mirror_set_speed, .start = mirror_run, .complete = mirror_complete, .pause = mirror_pause, @@ -1152,6 +1134,8 @@ static void mirror_start_job(const char *job_id, BlockDriverState *bs, mirror_top_bs->implicit = true; } mirror_top_bs->total_sectors = bs->total_sectors; + mirror_top_bs->supported_write_flags = BDRV_REQ_WRITE_UNCHANGED; + mirror_top_bs->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED; bdrv_set_aio_context(mirror_top_bs, bdrv_get_aio_context(bs)); /* bdrv_append takes ownership of the mirror_top_bs reference, need to keep |