Gluster users - Oct 2015 - Unnecessary healing in 3-node replication setup on reboot

On Saturday 17 October 2015 04:15 AM, Lindsay Mathieson
wrote:
>
> On 17 October 2015 at 02:51, Vijay Bellur <vbellur at redhat.com
> <mailto:vbellur at redhat.com>> wrote:
>
>     You may also want to check sharding (currently in beta with 3.7)
>     where large files are chunked to smaller fragments. With this
>     scheme, self-healing (and rolling checksum computation thereby)
>     happens only on those fragments that undergo changes when one of the
>     nodes in a replicated set is offline. This has shown nice
>     improvements in gluster's resource utilization during self-healing.
>
>
>
> Does it effect read speed and random i/o? I guess that would depend on
> the methodology used to calculate shard location for a given block.
> Could be quite interesting on top of zfs, love to test.
>
Krutika has been working on several performance improvements for 
sharding and the results have been encouraging for virtual machine 
workloads.

Testing feedback would be very welcome!

Thanks,
Vijay

On 18 October 2015 at 00:17, Vijay Bellur <vbellur at redhat.com> wrote:
> Krutika has been working on several performance improvements for sharding
> and the results have been encouraging for virtual machine workloads.
>
> Testing feedback would be very welcome!
>
Got to upgrade my cluster to jessie first :( Non trivial.

Is sharding a definite feature now?


-- 
Lindsay
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