By the way, here is a useful tool to calculate pg.
Best wishes,
Mika
2015-11-18 11:46 GMT+08:00 Vickie ch <mika.leaf666@xxxxxxxxx>:
Hi wah peng,Hope you don't mind. Just for reference.A extreme case. If your ceph cluster have 3 osd disks on different osd server.Set pg number is 10240.(Just example) That's mean all these pg will create on 3 disks.Lost one OSD also means a lot of pg lost too. It may bring some trouble for re-balance and recovery.In the other side, if you have 10000 OSDs but only set pg = 8.That mean some disks have no chance to using.Best wishes,
Mika
2015-11-13 16:26 GMT+08:00 wah peng <wah_peng@xxxxxxxxxxxx>:why data lost happens? thanks.
On 2015/11/13 星期五 16:13, Vickie ch wrote:
In the other side, pg number too large but OSD number too small that
have a chance to cause data lost.
_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
_______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
