openstack team mailing list archive

[Anne Gentle <anne@xxxxxxxxxxxxx>]

On Mon, Jun 3, 2013 at 2:47 AM, Sylvain Bauza <sylvain.bauza@xxxxxxxxxxxx>wrote:

>  Thanks Jerome for the clarification.
> I just posted out a blogpost for adding a Second volume to Cinder in
> Folsom [3]. Maybe it could be merged with the official Folsom Ubuntu Cinder
> documentation ? There is only H/A aspects that are mentioned by now.
>
> Someone from the documentation team ? Could you please point me out some
> materials for committing a new doc for that ?
>
>
Hi Sylvain,
Would love to have an update for clarity. Since it affects just the
stable/folsom branch of openstack-manuals, and there was no separate Block
Storage Admin manual at that point in time, you'll want to update the
Volumes chapter within the Compute Admin manual. To do so, follow the
instructions on http://wiki.openstack.org/Documentation/HowTo. As an
outline of the steps:
Git clone the openstack-manuals repository.
Checkout a new branch based on remotes/origin/stable/folsom.
Make your edits in
https://github.com/openstack/openstack-manuals/blob/stable/folsom/doc/src/docbkx/openstack-compute-admin/computevolumes.xml
.
Git commit, git review, we'll review the patch and publish.

If that's all a bit too much, we can work on it from your blog entry, I've
created this doc bug to track the work:
https://bugs.launchpad.net/openstack-manuals/+bug/1187400. Feel free to
assign yourself.
Thanks!
Anne




>  Thanks,
> -Sylvain
>
> [3] :
> http://sbauza.wordpress.com/2013/06/03/adding-a-second-cinder-volume-with-folsom/
>
>
> Le 31/05/2013 14:26, Jérôme Gallard a écrit :
>
> Hi Sylvain,
>
>  Great to know that you found how to solve your issue.
>
>  Thanks for reporting that you found the Grizzly doc confusing.
>  In fact, the Grizzly release introduced the multi-backend feature. This
> feature allows to have more than one backend on a same compute (ie, to be
> able to have several cinder-volume running on a same compute). This feature
> is not available in Folsom: you can only run one cinder-volume per compute
> (in that case, if you want to manage several backends, you have to have
> several computes).
>
>  Thanks a lot for your remarks,
> Jérôme
>
>
> On Fri, May 31, 2013 at 1:55 PM, Sylvain Bauza <sylvain.bauza@xxxxxxxxxxxx
> > wrote:
>
>>  Thanks but it didn't match my needs. I already know how to deploy
>> Cinder on a single host, my point was more relative to deploying a second
>> Cinder-volume instance, and if yes, what to do.
>>
>> Nevermind, I successed in deploying a second Cinder-volume, just by
>> looking at the packages and the confs. It's pretty straightforward, so I'm
>> not surprised it wasn't documented. Nevertheless, I think that the Grizzly
>> doc I mentioned [1] is confusing : by looking at it, I was thinking Cinder
>> was unable to have two distinct volumes with Folsom release. Maybe updating
>> the folsom branch for Cinder documentation, precising it *is* possible, is
>> worth a try ?
>>
>> Anyway, I'm documenting out the process in my own (new) blog. Keep tuned,
>> I'll post the URL out there.
>>
>> -Sylvain
>>
>>
>>
>> Le 31/05/2013 11:39, Jérôme Gallard a écrit :
>>
>> Hi Sylvain,
>>
>>  Maybe the folsom documentation for cinder will help you:
>>
>> http://docs.openstack.org/folsom/openstack-compute/install/apt/content/osfolubuntu-cinder.html
>>
>>
>>  Regards,
>> Jérôme
>>
>>
>> On Fri, May 31, 2013 at 9:21 AM, Sylvain Bauza <
>> sylvain.bauza@xxxxxxxxxxxx> wrote:
>>
>>> Putting openstack-ops@ in the loop :-)
>>>
>>> Le 30/05/2013 17:26, Sylvain Bauza a écrit :
>>>
>>>  Le 30/05/2013 15:25, Sylvain Bauza a écrit :
>>>>
>>>>> Hi,
>>>>>
>>>>> It sounds quite unclear for me about the possibility *in Folsom* to
>>>>> have two distinct Cinder hosts having each one LVM backend called
>>>>> cinder-volumes ?
>>>>>
>>>>> As per the doc [1], I would say the answer is no, but could you please
>>>>> confirm ?
>>>>>
>>>>> If so, do you have any idea on how to trick a nearly full LVM
>>>>> cinder-volumes VG ? (I can't hardly add a new disk for adding a second PV).
>>>>>
>>>>> Thanks,
>>>>> -Sylvain
>>>>>
>>>>> [1] :
>>>>> http://docs.openstack.org/grizzly/openstack-block-storage/admin/content/multi_backend.html
>>>>>
>>>>
>>>> Replying to myself. As per [2], it seems having a multiple
>>>> cinder-volume setup in Folsom is achiveable. Could someone from Cinder
>>>> confirm that this setup is OK ?
>>>>
>>>> [2] : https://lists.launchpad.net/openstack/msg21825.html
>>>>
>>>
>>>
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>>
>>
>>
>
>
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