вс, 2 дек. 2018 г., 20:38 Paul Emmerich paul.emmer...@croit.io:
> 10 copies for a replicated setup seems... excessive.
>
I'm try to create golang package for simple key-val store that used ceph
crushmap to distribute data.
For each namespace attach ceph crushmap rule.
>
_
10 copies for a replicated setup seems... excessive.
The rules are quite simple, for example rule 1 could be:
take default
choose firstn 5 type datacenter # picks 5 datacenters
chooseleaf firstn 2 type host # 2 different hosts in each datacenter
emit
rule 2 is the same but type region and first
Hi, i need help with crushmap
I have
3 regions - r1 r2 r3
5 dc - dc1 dc2 dc3 dc4 dc5
dc1 dc2 dc3 in r1
dc4 in r2
dc5 in r3
Each dc have 3 nodes with 2 disks
I need to have 3 rules
rule1 to have 2 copies on two nodes in each dc - 10 copies total failure
domain dc
rule2 to have 2 copies on two nodes
