[ceph-users] features required for live migration

Cassiano Pilipavicius cassiano at tips.com.br
Tue Nov 14 04:55:17 PST 2017


Hi Oscar, exclusive-locking should not interfere with live-migration. I 
have a small virtualization cluster backed by ceph/rbd and I can migrate 
all the VMs which RBD image have exclusive-lock enabled without any issue.



Em 11/14/2017 9:47 AM, Oscar Segarra escreveu:
> 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 
> <mailto: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
>>     <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
>
>
>
>
> _______________________________________________
> ceph-users mailing list
> ceph-users at lists.ceph.com
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20171114/6705ba5c/attachment.html>


More information about the ceph-users mailing list