Hello!
In a two (2) rack Ceph cluster, with 15 hosts per rack (10 OSD per
host / 150 OSDs per rack), is it possible to create a ruleset for a
pool such that the Primary and Secondary PGs/replicas are placed in
one rack and Tertiary PG/replica is placed in the other rack?
root standard {
id -1 # do not change unnecessarily
# weight 734.400
alg straw
hash 0 # rjenkins1
item rack1 weight 367.200
item rack2 weight 367.200
}
Given there are only two (2) buckets, but three (3) replica, is it
even possible?
I think following Giant blueprint is trying to address scenario I
described above.. Is the following blueprint targeted for Giant
release?
http://wiki.ceph.com/Planning/Blueprints/Giant/crush_extension_for_more_flexible_object_placement
Regards,
Amit Vijairania | Cisco Systems, Inc.
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