[ceph-users] features required for live migration

Oscar Segarra oscar.segarra at gmail.com
Tue Nov 14 03:53:55 PST 2017


Hi,

I include Jason Dillaman, the creator of this post
http://tracker.ceph.com/issues/15000 in this thread

Thanks a lot

2017-11-14 12:47 GMT+01:00 Oscar Segarra <oscar.segarra at gmail.com>:

> Hi Konstantin,
>
> Thanks a lot for your advice...
>
> I'm specially interested in feature "Exclusive locking". Enabling this
> feature can affect live/offline migration? In this scenario (online/offline
> migration)  I don't know if two hosts (source and destination) need access
> to the same rbd image at the same time
>
> It looks that enabling Exlucisve locking you can enable some other
> interessant features like "Object map" and/or "Fast diff" for backups.
>
> Thanks a lot!
>
> 2017-11-14 12:26 GMT+01:00 Konstantin Shalygin <k0ste at k0ste.ru>:
>
>> On 11/14/2017 06:19 PM, Oscar Segarra wrote:
>>
>> What I'm trying to do is reading documentation in order to understand how
>> features work and what are they for.
>>
>> http://tracker.ceph.com/issues/15000
>>
>>
>> I would also be happy to read what features have negative sides.
>>
>>
>> The problem is that documentation is not detailed enough.
>>
>> The proof-test method you suggest I think is not a good procedure because
>> I want to a void a corrpution in the future due to a bad configuration
>>
>>
>> So my recommendation: if you can wait - may be from some side you receive
>> a new information about features. Otherwise - you can set minimal features
>> (like '3') - this is enough for virtualization (snapshots, clones).
>>
>> And start your project.
>>
>> --
>> Best regards,
>> Konstantin Shalygin
>>
>>
>
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