[one-users] Fwd: Add New Storage Box

Rhesa Mahendra rhesa at lintasmediadanawa.com
Wed Sep 3 02:19:08 PDT 2014


thanks for your answer, i will be test and report to you,
On 09/03/2014 04:09 PM, Javier Fontan wrote:
> We have not tested that configuration but if you only use persistent 
> images it may work. Make sure you don't try to do cold migrations as 
> the checkpoint is saved to the system datastore and probably will get 
> some time to be synchronized with the new node.
>
>
> On Tue, Aug 26, 2014 at 9:04 AM, Rhesa Mahendra 
> <rhesa at lintasmediadanawa.com <mailto:rhesa at lintasmediadanawa.com>> wrote:
>
>     Datastore 0 and datastore 2 will be synchronized frontend + nodes
>     (we just use persistent image) so i think datastore 0 just
>     synchronized symbolic link.
>     If we have problem maybe existing storage box (datastore 1)
>     broken, all vm used new storage box ( datastore 100) will not
>     impact with datastore 1 because datastore 0 shared and
>     synchronized across frontend +nodes. it possible?
>
>     Rhesa
>
>
>     On 08/26/2014 01:52 PM, Jaime Melis wrote:
>>     Rhesa,
>>
>>     the problem is datastore 0, it's the system datastore. If you
>>     move it to the local nodes, it will not be shared and
>>     synchronized across the nodes, therefore you will lose many
>>     benefits like live-migration and instant persintant image VM
>>     deployment.
>>
>>     Why is it that you want to move datastore 0 to the frontend + nodes?
>>
>>
>>     On Tue, Aug 26, 2014 at 8:44 AM, Rhesa Mahendra
>>     <rhesa at lintasmediadanawa.com
>>     <mailto:rhesa at lintasmediadanawa.com>> wrote:
>>
>>         Jaime,
>>
>>         Thanks for your reply, now datastore 0 and datastore 2 are in
>>         existing storage box, mounted in frontend + nodes, we want to
>>         move datastore 0 and datastore 2 from existing storage box to
>>         frontend + nodes, could it be done?
>>
>>         So in existing storage box just have datastore 1 and in new
>>         storage box just have datastore 100.
>>
>>         Rhesa.
>>
>>
>>         On 08/26/2014 01:34 PM, Jaime Melis wrote:
>>>         Hi,
>>>
>>>         I don't entirely understand the difference between both
>>>         options, could you explain in more detail what you mean by
>>>         distributing the datastore to all the nodes?
>>>
>>>         Assuming your configuration is as follows: NFS Server
>>>         exports datastores 0 and 1 -> Mounted in Frontend + Nodes
>>>
>>>         I recommend the following option:
>>>         - Create a new Image datastore (it will have ID >= 100, in
>>>         this example we will assume it has ID: 100)
>>>         - Create a new exports directive in your new storage box,
>>>         for example /storage/datastores/100
>>>         - Mount that mountpoint in all the nodes including the
>>>         frontend in the following path: /var/lib/one/datastores/100
>>>
>>>         Now you can register more images in the new datastore (ID:
>>>         100), and since they are all persistent they will not take
>>>         space in the system datastore (ID: 0)
>>>
>>>         Best regards,
>>>         Jaime
>>>
>>>
>>>
>>>         On Tue, Aug 26, 2014 at 6:05 AM, Rhesa Mahendra
>>>         <rhesa at lintasmediadanawa.com
>>>         <mailto:rhesa at lintasmediadanawa.com>> wrote:
>>>
>>>             Guys, please help.
>>>
>>>
>>>
>>>             -------- Original Message --------
>>>             Subject: 	Add New Storage Box
>>>             Date: 	Mon, 25 Aug 2014 16:21:13 +0700
>>>             From: 	Rhesa Mahendra <rhesa at lintasmediadanawa.com>
>>>             <mailto:rhesa at lintasmediadanawa.com>
>>>             To: 	users at lists.opennebula.org
>>>             <mailto:users at lists.opennebula.org>
>>>             <users at lists.opennebula.org>
>>>             <mailto:users at lists.opennebula.org>, Javier Fontan
>>>             <jfontan at opennebula.org> <mailto:jfontan at opennebula.org>
>>>
>>>
>>>
>>>             Guys,
>>>
>>>             We have plan to add a new storage box, Our existing storage :
>>>             /var/lib/one/datastore/0 = system
>>>             /var/lib/one/datastore/1 = image
>>>             /var/lib/one/datastore/2 = file
>>>             All type are from one storage box.
>>>
>>>             We did internal discuss and we get result with two options:
>>>
>>>             1. We add a new storage box as an image type and define it as
>>>             /var/lib/one/datastore/3 = image2.
>>>
>>>             Or
>>>
>>>             2. We will distribute /var/lib/one/datastore/0 = system and
>>>             /var/lib/one/datastore/2 = file to all nodes (all node are synced), then
>>>             we add the new storage box as /var/lib/one/datastore/3 = image2
>>>             So with this second option, the nodes only mount two path from the
>>>             storage box (/var/lib/one/datastore/1 = image [from existing storage
>>>             box]  and /var/lib/one/datastore/3 = image2 [from new storage box]). All
>>>             the images are persistent
>>>             Please give us some advise with pros and cons within this two options,
>>>             thanks.
>>>
>>>             Rhesa
>>>
>>>
>>>
>>>
>>>             _______________________________________________
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>>>             Users at lists.opennebula.org
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>>>
>>>
>>>
>>>
>>>         -- 
>>>         Jaime Melis
>>>         Project Engineer
>>>         OpenNebula - Flexible Enterprise Cloud Made Simple
>>>         www.OpenNebula.org <http://www.OpenNebula.org> |
>>>         jmelis at opennebula.org <mailto:jmelis at opennebula.org>
>>
>>
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>>
>>
>>
>>
>>     -- 
>>     Jaime Melis
>>     Project Engineer
>>     OpenNebula - Flexible Enterprise Cloud Made Simple
>>     www.OpenNebula.org <http://www.OpenNebula.org> |
>>     jmelis at opennebula.org <mailto:jmelis at opennebula.org>
>
>
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>
>
>
> -- 
> Javier Fontán Muiños
> Developer
> OpenNebula - Flexible Enterprise Cloud Made Simple
> www.OpenNebula.org <http://www.OpenNebula.org> | @OpenNebula | 
> github.com/jfontan <http://github.com/jfontan>

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