Hi,
I have a crushmap structure likes root->rack->host->osds. I designed the rule
below, since I used "chooseleaf...rack" in rule definition, if there is only
one rack in the cluster, the ceph gps will always stay at stuck unclean state
(that is because the default metadata/data/rbd pool set 2 replicas). Could you
let me know how do I configure the rule to let it can also work in a cluster
with only one rack?
rule ssd{
ruleset 1
type replicated
min_size 0
max_size 10
step take root
step chooseleaf firstn 0 type rack
step emit
}
BTW, if I add a new rack into the crushmap, the pg status will finally get to
active+clean. However, my customer do ONLY have one rack in their env, so hard
for me to have workaround to ask him setup several racks.
Wei Cao (Buddy)
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