[Gluster-devel] AFR write completion? AFR read redundancy?
mogulguy at yahoo.com
Mon Mar 3 16:48:37 UTC 2008
--- Anand Avati <avati at zresearch.com> wrote:
> > First, I am curious as to the write semantics,
> > when does AFR report a write complete? Does a
> > write have to make it to all of the subvolumes
> > or just one before it claims a write complete?
> AFR waits for completion (either success or failure)
> from all subvolumes before returning.
Cool. In the case of mixed results (some success, some
failures), what is the result? Anyway to distinguish
this from a complete success?
> If you need one of your subvolumes to be written in
> background, you need to load write-behind in that
> > Also, what about reads, does it only read from one
> > subvolume? Is there any way to make it read from
> > all subvolumes to check/correct for errors?
> it does a read load balancing per file. it does not
> check/correct errors.
Any plans for such a feature? HA is great, but so is
error resilience/correction. :)
Thanks for the quick responses!
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