Hi David, Thank you for your reply, I will read about the min_size 1 value. What about my initial question, anyone? Thanks! Van: David Turner [mailto:drakonstein@xxxxxxxxx]
Verzonden: donderdag 24 augustus 2017 19:45
Aan: Sinan Polat; ceph-users@xxxxxxxx
Onderwerp: Re: Ruleset vs replica count > min_size 1 STOP THE MADNESS. Search the ML to realize why you should never user a min_size of 1. I'm curious as well as to what this sort of configuration will do for how many copies are stored between DCs. Hi, In a Multi Datacenter Cluster I have the following rulesets: ------------------ rule ams5_ssd { ruleset 1 type replicated min_size 1 max_size 10 step take ams5-ssd step chooseleaf firstn 2 type host step emit step take ams6-ssd step chooseleaf firstn -2 type host step emit } rule ams6_ssd { ruleset 2 type replicated min_size 1 max_size 10 step take ams6-ssd step chooseleaf firstn 2 type host step emit step take ams5-ssd step chooseleaf firstn -2 type host step emit } ------------------ The replication size is set to 3. When for example ruleset 1 is used, how is the replication being done? Does it store 2 replica’s in ams5-ssd and store 1 replica in ams6-ssd? Or does it store 3 replicas in ams5-ssd and 3 replicas in ams6-ssd? Thanks! Sinan _______________________________________________
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