[Gluster-devel] Enabling shard on EC

[Krutika Dhananjay]

Hi,

Work is in progress for this (and going a bit slow at the moment because of
other priorities).

At the moment we support sharding only for VM image store use-case - most
common large file + single writer use case we know of.

Just curious, what is the use case where you want to use shard+EC?

-Krutika

On Thu, May 4, 2017 at 4:05 PM, Pranith Kumar Karampuri <pkarampu at redhat.com
> wrote:

> +Krutika
>
> Krutika started work on this. But it is very long term. Not a simple thing
> to do.
>
> On Thu, May 4, 2017 at 3:53 PM, Ankireddypalle Reddy <areddy at commvault.com
> > wrote:
>
>> Pranith,
>>
>>                  Thanks. Is there any work in progress to add this
>> support.
>>
>>
>>
>> Thanks and Regards,
>>
>> Ram
>>
>> *From:* Pranith Kumar Karampuri [mailto:pkarampu at redhat.com]
>> *Sent:* Thursday, May 04, 2017 6:17 AM
>>
>> *To:* Ankireddypalle Reddy
>> *Cc:* Gluster Devel (gluster-devel at gluster.org);
>> gluster-users at gluster.org
>> *Subject:* Re: [Gluster-devel] Enabling shard on EC
>>
>>
>>
>>
>>
>>
>>
>> On Thu, May 4, 2017 at 3:43 PM, Ankireddypalle Reddy <
>> areddy at commvault.com> wrote:
>>
>> Pranith,
>>
>>                  Thanks. Does it mean that a given file can be written by
>> only one client at a time. If multiple clients try to access the file in
>> write mode, does it lead to any kind of data inconsistencies.
>>
>>
>>
>> We only tested it for single writer cases such as VM usecases. We need to
>> bring in transaction framework for sharding to work with multiple writers.
>>
>>
>>
>>
>>
>> Thanks and Regards,
>>
>> Ram
>>
>> *From:* Pranith Kumar Karampuri [mailto:pkarampu at redhat.com]
>> *Sent:* Thursday, May 04, 2017 6:07 AM
>> *To:* Ankireddypalle Reddy
>> *Cc:* Gluster Devel (gluster-devel at gluster.org);
>> gluster-users at gluster.org
>> *Subject:* Re: [Gluster-devel] Enabling shard on EC
>>
>>
>>
>> It is never been tested. That said, I don't see any missing pieces that
>> we know of for it to work. Please note that sharding works only for single
>> writer cases at the moment. Do let us know if you find any problems and we
>> will fix them.
>>
>>
>>
>> On Wed, May 3, 2017 at 2:17 PM, Ankireddypalle Reddy <
>> areddy at commvault.com> wrote:
>>
>> Hi,
>>
>>       Are there any known negatives of enabling shard on EC. Is this a
>> recommended configuration?.
>>
>>
>>
>> Thanks and Regards,
>>
>> Ram
>>
>>
>>
>>
>>
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>> --
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>> Pranith
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>> Pranith
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>
>
> --
> Pranith
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