Hi , We are trying to simulate repair of single/multiple erasures using cl msr. When we remove one or more osds , we see that other osds shift positions within the placement group. Eg - This is how our original PG looked - [10,8,11,6,12,13,15,14,3,4,0,24,21,19] we had 25 osds available in total and k=10 and m=4 (n=14) . When we removed osd 14 and osd 15, some of the osds changed their positions within the PG. Resulting PG: [10,8,11,6,21,19,22,23,3,4,0,24,12,13] Original PG: [10,8,11,6,12,13,15,14,3,4,0,24,21,19] As you can see osds 12,13 have exchanged positions with osds 21,19. Can we avoid this and only let the removed osd be replaced by a different available osd? Also can you please explain under what conditions osds will shift within the PG? Thanks, Elita -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
