diff options
Diffstat (limited to 'block/backup.c')
| -rw-r--r-- | block/backup.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/block/backup.c b/block/backup.c index 09ff5a92ef..5522c0f3fe 100644 --- a/block/backup.c +++ b/block/backup.c @@ -388,6 +388,29 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs, return NULL; } + cluster_size = backup_calculate_cluster_size(target, errp); + if (cluster_size < 0) { + goto error; + } + + if (perf->max_workers < 1) { + error_setg(errp, "max-workers must be greater than zero"); + return NULL; + } + + if (perf->max_chunk < 0) { + error_setg(errp, "max-chunk must be zero (which means no limit) or " + "positive"); + return NULL; + } + + if (perf->max_chunk && perf->max_chunk < cluster_size) { + error_setg(errp, "Required max-chunk (%" PRIi64 ") is less than backup " + "cluster size (%" PRIi64 ")", perf->max_chunk, cluster_size); + return NULL; + } + + if (sync_bitmap) { /* If we need to write to this bitmap, check that we can: */ if (bitmap_mode != BITMAP_SYNC_MODE_NEVER && @@ -420,11 +443,6 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs, goto error; } - cluster_size = backup_calculate_cluster_size(target, errp); - if (cluster_size < 0) { - goto error; - } - /* * If source is in backing chain of target assume that target is going to be * used for "image fleecing", i.e. it should represent a kind of snapshot of |