> And you had the hit the nail by asking about *replication factor*. > Because > I don't know how to change the replication factor. AFAIK, by default it > is > *3x*. But I would like to change, for example to* 2x*. ceph osd pool get rbd size https://docs.ceph.com/en/latest/man/8/ceph/ > So please excuse me for two naive questions before my cluster info [1]: > > - How can I change my replication factor? I am assuming I can change it > through vstart script. I have no idea what vstart is. If you want to learn ceph (and you should, if you are going to play with large amounts of other peoples data) install it manually. IMHO deployment tools are for making deployments easier and faster and not for for I don't know, so lets run a script. > - How can I change ethernet speed on test cluster? For example, 1gbit > ethernet > and 10gbit ethernet. Like you had done it. Assuming I can change it > through vstart script. Don't do it, it is a waste of time, it is just for reference. I wanted to know when I started creating my test cluster. > [1] > I am running a minimal cluster of 4 OSDs . I am not sure if you are going to get much more performance out of it then. Because you do not utilize the power of many osd's. This how my individual drives perform under the same rados bench test. All around the 20MB/s [@~]# dstat -d -D sdb,sdc,sdd,sdf,sdl,sdg,sdh,sdi --dsk/sdb-----dsk/sdc-----dsk/sdd-----dsk/sdf-----dsk/sdl-----dsk/sdg-----dsk/sdh-----dsk/sdi-- read writ: read writ: read writ: read writ: read writ: read writ: read writ: read writ 3664k 284k:2507k 172k:2692k 204k:6676k 467k:2405k 322k:3220k 230k:1932k 196k:2050k 202k 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 0 0 8192B: 0 0 : 0 28k: 0 44k: 0 928k: 0 28k: 0 0 : 0 12k 0 4096B: 0 0 : 0 36k: 68k 32k: 0 0 : 0 0 : 0 0 : 0 0 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 0 0 0 : 0 0 : 0 0 : 0 24k: 0 0 : 0 0 : 0 0 : 0 0 4096B 104k: 0 0 :4096B 20k: 0 0 :8192B 152k: 0 80k: 0 0 : 0 72k 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 4096B 0 0 : 0 12k: 0 0 : 0 0 : 0 12k: 0 24k: 0 0 : 0 12k 0 72k: 0 16k: 0 32k: 20k 100k: 0 4096B: 0 0 : 0 0 : 0 24k 0 8200k: 0 0 : 0 20M: 12k 20M: 0 28M: 0 20M: 0 12M: 0 20M 0 16M: 0 12M: 0 24M: 0 16M: 0 47M: 0 12M: 0 8212k: 0 20M 0 24M: 0 11M: 0 28M: 0 28M: 0 49M: 0 44M: 0 12M: 0 24M 0 38M: 0 13M: 0 42M: 0 32M: 0 28M: 0 31M: 0 4104k: 0 21M 0 50M: 0 8204k: 0 28M:4096B 44M: 0 61M: 0 33M: 0 8204k: 0 12M 0 32M: 0 20M:4096B 38M: 0 20M: 0 55M:8192B 39M: 0 32M: 0 24M 0 16M: 0 24M:4096B 29M: 0 36M: 0 28M: 0 17M: 0 37M: 0 0 4096B 44M: 0 16M: 0 40M: 44k 31M:4096B 28M:8192B 32M: 0 12M: 0 24M 0 12M: 0 28M: 0 6196k: 0 18M: 0 52M: 0 32M: 0 46M: 12k 40M 0 20M: 0 18M: 0 38M: 0 52M: 0 32M: 0 24M: 0 27M: 0 43M 0 128k: 0 2056k: 0 16k: 20k 12M: 0 0 : 0 8212k:4096B 12k:8192B 9804k 0 520k: 0 116k: 0 280k: 0 452k: 0 364k: 0 208k: 0 152k: 0 144k 0 64k: 0 88k: 0 64k: 0 132k:4096B 156k: 0 88k: 0 72k: 0 184k 0 140k: 0 0 : 0 0 :8192B 20k: 0 12k: 0 112k: 0 0 : 0 0 0 0 : 0 8192B: 0 12k: 32k 1044k: 0 0 :4096B 16k:4096B 0 : 0 24k 0 0 : 0 0 : 0 36k: 0 12k: 0 0 : 0 0 : 0 0 : 0 0 0 0 : 0 0 : 0 0 : 0 0 : 0 20k: 0 0 : 0 0 : 0 0 0 92k: 0 24k: 0 0 : 12k 60k: 0 0 : 0 0 : 0 0 : 320k 0 0 0 : 0 0 : 0 0 : 12k 80k: 0 20k: 0 0 : 0 0 : 512k 0 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 768k 0 _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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