On 7/07/2016 8:30 PM, Gandalf Corvotempesta wrote:
1) Can I use the same cluster for both, maildir hosting and VM images hosting?
Yes. However maildir involves many tens of thousands of small & large files, I *think* that glusters performances isn't the best with very large numbers of files in a dir, but hopefully someone else with more experience can chime in on that.
2) a simple kernel extract (with replica 3) is sloooooooooooooooooooow. Direct extract in a brick took 12 seconds. Extract through gluster (replica 3) took 10m2.214s. In a perfect world, it should be 3 times the direct extraction (due to the replica) plus a little bit overhead for the network. Can I optimize this ?
That does sound slow - how big was the tar file? what is your network speed and setup?
3) I'm thinking creating a volume for Maildir, with no sharding, and 1 volume for VM hosting in the future (with sharding enabled). Is this OK?
Yes, sounds like a good idea.
4) I would like to get replica 3 for all, but also the ability to add 1 brick/server per time and not in multiple (in our case, 3 server every time), like Ceph does. Is this a supported configuration?
Not sure. Disperse Replicated vol maybe?
5) currently i'm testing gluster on a gigabit network (not bonded, it's just a test). When running in production, i'll move to 10GbE but currently I would like to get the best performance from the gigabit network.
If you're not using a dual or better bonded connection on replica 3 then your write speeds will be limited to 1Gb/3 max.
some hardware info: currently 2x E5-2603, 16GB RAM on each storage node.
Are your clients on the storage nodes or are they dedicated? -- Lindsay Mathieson _______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://www.gluster.org/mailman/listinfo/gluster-users
