[Gluster-devel] afr, striping, and nufa scheduler

[Krishna Srinivas]

Hi August,

Actually the read scheduler is not yet done, it is on our roadmap to
implement it. Now, AFR does all the read operations from its first
child.

Regards
Krishna

On 9/25/07, August R. Wohlt <glusterfs at isidore.net> wrote:
> Hi,
>
> I have a setup with two servers mirroring each others' files using
> cluster/afr:2. The two servers are on a high-latency connection, so I would
> like to ensure that the local server is given preference in i/o over the
> distant server. I do not need aggregrate performance, only file replication.
>
> Is it the default behavior to do i/o on the first server listed in the afr
> configration before the 2nd? I see this in the FAQ about striping, which
> makes me wonder:
>
>   GlusterFS AFR (automatic file replication) translator does a striped read
> to improve performance on mirrored files.
>
> And I do not see the equivalent of a "scheduler" option in cluster/afr in
> the src that would let me use something like NUFA.
>
> What is the best way to ensure this?
>
> Thanks!
> :august
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