[Gluster-devel] Gluster driver for Archipelago - Development process

Alex Pyrgiotis apyrgio at grnet.gr
Wed Dec 18 14:24:45 UTC 2013

Hi Vijay,

On 12/17/2013 07:54 PM, Vijay Bellur wrote:
> On 12/06/2013 07:46 PM, Alex Pyrgiotis wrote:
> Alex: Thanks for this very detailed mail. It makes things quite clear to me.

That's good to hear.

>> Summing up:
>> My opinion is that persistent locking is of secondary importance, as it
>> can be handled in application level. Async open with O_CREAT on the
>> other hand isn't.
>> Thus, I propose for the first phase to make the open() call non-blocking
>> and possibly add the O_CREAT flag. For our part, we can benchmark the
>> performance of the current driver and measure it against any
>> improvements that occur along the road.
>> For the second phase, we can work out a persistent locking scheme that
>> would benefit both parties.
>> Finally, the third phase can revolve around making the rest of the
>> blocking calls non-blocking.
>> So, what do you think?
> Agree with you here. We can knock off things in the order that you 
> mention. We will start working on the non-blocking open() implementation 
> and let you folks know when it is ready. We can then pick up subsequent 
> integration activities.

That sounds good. We'll be waiting eagerly to measure the performance
gain and move forward with the rest of the things.

Kind Regards,

Alex | apyrgio at grnet.gr

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