Open Stack

Glare does not compete with Swift, it uses this service as one of the
possible backeds. On the whole I should note that in some cases the use of
Swift is excessive: for example, for small files (a few kilobytes), it is
easier to store them directly in the database. And Glare just let you do
this - to keep large files in stores like Swift or Ceph, and use a more
appropriate location for small ones.

Plus, Swift does not provide data immutability. Where is the guarantee that
user won't change his files in Swift or completely remove them? Glare
manages this behavior and provides full immutability for stored data,
regardless of the backend. In general, to address these immutability issues
Glance was invented in due time. But now we see that its functionality is
not enough and it's really hard to extend it.

On Thu, Jan 19, 2017 at 6:25 AM, Lingxian Kong <anlin.kong at gmail.com> wrote:

>
> On Thu, Jan 19, 2017 at 5:54 AM, Mikhail Fedosin <mfedosin at gmail.com>
> wrote:
>
>> And here I want to ask the community - how exactly Glare may be useful in
>> OpenStack? Glare was developed as a repository for all possible data types,
>> and it has many possible applications. For example, it's a storage of vm
>> images for Nova. Currently Glance is used for this, but Glare has much more
>> features and this transition is easy to implement. Then it's a storage of
>> Tosca templates. We were discussing integration with Heat and storing
>> templates and environments in Glare, also it may be interesting for TripleO
>> project. Mistral will store its workflows in Glare, it has already been
>> decided. I'm not sure if Murano project is still alive, but they already
>> use Glare 0.1 from Glance repo and it will be removed soon (in Pike afaik),
>> so they have no other options except to start using Glare v1. Finally there
>> were rumors about storing torrent files from Ironic.
>
>
> ​Seems Swift already could do such things.​
>
>
> Cheers,
> Lingxian Kong (Larry)
>
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