Dear ceph users,
I try to write a crush ruleset that will, for a pool size of 3, put a
copy in another host in the local rack and a copy in another rack. I now
how to do the later, but I do not understand how to match the current
rack. Here is my try:
rule replicate_three_times {
ruleset 1
type replicated
min_size 3
max_size 3
step take default
step chooseleaf firstn 1 type rack
step emit
step take rack
step chooseleaf firstn 1 type host
step emit
}
I thought that "take rack" will select the rack the primary host is in,
but it does not compile and claims that it's undefined.
Any help would be welcome :)
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