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
<http://pgp.rediris.es:11371/pks/lookup?op=get&search=0xA34331932EBC715A>
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