RESYNC_SECTORS
int good_sectors = RESYNC_SECTORS;
(sector_nr + 2 * RESYNC_SECTORS >
(sector_nr + 2 * RESYNC_SECTORS > conf->cluster_sync_high));
if (sector_nr + RESYNC_SECTORS < last)
sector_nr = last + 1 - RESYNC_SECTORS;
if (sector_nr + RESYNC_SECTORS <= last)
last = sector_nr + RESYNC_SECTORS - 1;