On 2016/11/30 下午2:37, Guoqing Jiang wrote: > > > On 11/28/2016 03:33 PM, Coly Li wrote: >> In raid1_sync_request(), I see, >> conf->cluster_sync_low = mddev->curr_resync_completed; >> conf->cluster_sync_high = conf->cluster_sync_low + >> CLUSTER_RESYNC_WINDOW_SECTORS; >> >> Is it possible that LBA range [conf->cluster_sync_low, >> conf->cluster_sync_high] goes across the border of a barrier unit size ? > > Not pretty sure about it, but since cluster's resync window is 32M which is > less than BARRIER_UNIT_SECTOR_SIZE, I guess it would not cause trouble. Thanks for the hint. So BARRIER_UNIT_SECTOR_SIZE is 32MB aligned, cluster's resync window won't go across the boundary. Coly -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
