Jorge,
I'd suggest to start with regular (non-SPDK) configuration and deploy test cluster. Then do some benchmarking against it and check if nvme drive is the actual bottleneck. I doubt it is though. I did some experiments a while ago and didn't see any benefit from SPDK in my case - probably due to bottlenecks were somewhere else.
Hope this helps,
Igor
Hey, sorry if the question doesnt really make a lot of sense I am talking from almost complete ignorace of the topic, but there is not a lof info about it
I am planning about creating a cluster with 7~10 NL-SAS HDD and 1 nmve per host.
The nmve would be used as rocksDB and journal for each osd (hdd block device) but I am worried about that being a bottleneck as all the osds would share the same device.
I've been reading about spdk for nmve devices and I have seen that blueStore configuration supports it (http://docs.ceph.com/docs/master/rados/configuration/bluestore-config-ref/#spdk-usage) but I would like the know the current status of the spdk and if I could use it for rocksDB device and not for block device
I've been reading also about RDMA and I would like to know if I could use it in this scenario, all I have found was using hole nmve devices for block and RocksDB
I would really apreciate if someone could introduce me about this topic, its really interesting but also confusing at the same time.
Thanks a lot!
--
Jorge Pinilla López
jorpilo@xxxxxxxxx
Estudiante de ingenieria informática
Becario del area de sistemas (SICUZ)
Universidad de Zaragoza
PGP-KeyID: A34331932EBC715A
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