[Openstack] [Swift] Geo replication vs Storage policies

Shrinand Javadekar shrinand at maginatics.com
Thu Jul 31 18:19:26 UTC 2014


Thanks for the responses Sam, John!

On Wed, Jul 30, 2014 at 11:11 AM, John Dickinson <me at not.mn> wrote:
>
> On Jul 30, 2014, at 10:57 AM, Samuel Merritt <sam at swiftstack.com> wrote:
>
>> On 7/30/14, 10:18 AM, Shrinand Javadekar wrote:
>>> Hi,
>>>
>>> Swift v1 allowed for geo replication using read and write affinity
>>> rules. Now, Swift v2 allows setting storage policies (which can affect
>>> replication) per container. I wanted to know if/how these two
>>> intersect. Some of the following are straight-forward questions, just
>>> wanted to get a confirmation.
>>>
>>> 1. If I have Swift v2.0 installation, can I enable geo replication
>>> without having a separate storage policy?
>>
>> Yes.
>>
>>> 2. How does a user enable both geo replication and have storage policies?
>>
>> Enable geo-replication with the read_affinity and write_affinity settings as usual, then define some storage policies.
>>
>>> 3. Are there plans of consolidating geo replication and storage policies?
>>
>> No; they're orthogonal.
>
> But geo-clusters and storage policies go very well together, since polices allows you to have some data geographically distributed and other data in specific different locations.
>
> --John
>
>
>
>
>
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