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
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.
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