Well I can absolsulty try that or I can even make a mix of SPDK and non SPDK OSDs and test them individually I just wanted to know how stable is it and if I could use it as RocksDB Thanks for the help -------- Mensaje original --------De: Igor Fedotov <ifedo...@suse.de> Fecha: 24/1/18 12:26 p. m. (GMT+01:00) Para: ceph-users@lists.ceph.com Asunto: Re: [ceph-users] SPDK for BlueStore rocksDB
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 On 1/24/2018 12:46 PM, Jorge Pinilla López wrote: 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 jorp...@unizar.es Estudiante de ingenieria informática Becario del area de sistemas (SICUZ) Universidad de Zaragoza PGP-KeyID: A34331932EBC715A _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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