Mailing List Archive: OpenStack: Dev

Sharing disk: OCFS2 or GFS2?

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danielfm at gmail

Apr 24, 2012, 2:44 AM

Post #1 of 5 (310 views)
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Sharing disk: OCFS2 or GFS2?

Hello everyone.

My setup is simple. A volumen shared by iSCSI from our Netapp storage
that I would like to use it for the instances running on our
nova-compute nodes.

Has anyone tried to use OCFS2 or GFS2 as FS via iSCSI mounted on the
nova-computes as a sharing disk and running the instances into it?

The plan b is to create a volumen by node and to format it as ext3 or ext4.

Any recomendations?

Thanks!

Regards,
Daniel

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John.Garbutt at citrix

Apr 24, 2012, 3:02 AM

Post #2 of 5 (304 views)
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Re: Sharing disk: OCFS2 or GFS2? [In reply to]

If you are using XenServer, you should be able to talk to the NetApp using XenServer's Storage Manager.
You can either create XenServer pools connected to NetApp, using Host Aggregates to build up your pool, or use the Storage Manager integration to expose volumes to your VMs on local storage.
It depends exactly what your requirements are.

Hope that helps,
John

> -----Original Message-----
> From: openstack-bounces+john.garbutt=eu.citrix.com [at] lists
> [mailto:openstack-bounces+john.garbutt=eu.citrix.com [at] lists]
> On Behalf Of Daniel Martinez
> Sent: 24 April 2012 10:44
> To: openstack [at] lists
> Subject: [Openstack] Sharing disk: OCFS2 or GFS2?
>
> Hello everyone.
>
> My setup is simple. A volumen shared by iSCSI from our Netapp storage that
> I would like to use it for the instances running on our nova-compute nodes.
>
> Has anyone tried to use OCFS2 or GFS2 as FS via iSCSI mounted on the nova-
> computes as a sharing disk and running the instances into it?
>
> The plan b is to create a volumen by node and to format it as ext3 or ext4.
>
> Any recomendations?
>
> Thanks!
>
> Regards,
> Daniel
>
> _______________________________________________
> Mailing list: https://launchpad.net/~openstack
> Post to : openstack [at] lists
> Unsubscribe : https://launchpad.net/~openstack
> More help : https://help.launchpad.net/ListHelp

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danielfm at gmail

Apr 24, 2012, 5:59 AM

Post #3 of 5 (300 views)
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Re: Sharing disk: OCFS2 or GFS2? [In reply to]

I forgot to add.

I'm using Ubuntu 12.04 with KVM.

Thanks again.

On Tue, Apr 24, 2012 at 07:02, John Garbutt <John.Garbutt [at] citrix> wrote:
> If you are using XenServer, you should be able to talk to the NetApp using XenServer's Storage Manager.
> You can either create XenServer pools connected to NetApp, using Host Aggregates to build up your pool, or use the Storage Manager integration to expose volumes to your VMs on local storage.
> It depends exactly what your requirements are.
>
> Hope that helps,
> John
>
>> -----Original Message-----
>> From: openstack-bounces+john.garbutt=eu.citrix.com [at] lists
>> [mailto:openstack-bounces+john.garbutt=eu.citrix.com [at] lists]
>> On Behalf Of Daniel Martinez
>> Sent: 24 April 2012 10:44
>> To: openstack [at] lists
>> Subject: [Openstack] Sharing disk: OCFS2 or GFS2?
>>
>> Hello everyone.
>>
>> My setup is simple. A volumen shared by iSCSI from our Netapp storage that
>> I would like to use it for the instances running on our nova-compute nodes.
>>
>> Has anyone tried to use OCFS2 or GFS2 as FS via iSCSI mounted on the nova-
>> computes as a sharing disk and running the instances into it?
>>
>> The plan b is to create a volumen by node and to format it as ext3 or ext4.
>>
>> Any recomendations?
>>
>> Thanks!
>>
>> Regards,
>> Daniel
>>
>> _______________________________________________
>> Mailing list: https://launchpad.net/~openstack
>> Post to : openstack [at] lists
>> Unsubscribe : https://launchpad.net/~openstack
>> More help : https://help.launchpad.net/ListHelp

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narayan.desai at gmail

Apr 24, 2012, 7:56 AM

Post #4 of 5 (293 views)
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Re: Sharing disk: OCFS2 or GFS2? [In reply to]

As far as I know, the current volume service doesn't support
connecting the same volume to multiple instances at the same time, so
neither of these can work directly through nova apis.
-nld

On Tue, Apr 24, 2012 at 4:44 AM, Daniel Martinez <danielfm [at] gmail> wrote:
> Hello everyone.
>
> My setup is simple. A volumen shared by iSCSI from our Netapp storage
> that I would like to use it for the instances running on our
> nova-compute nodes.
>
> Has anyone tried to use OCFS2 or GFS2 as FS via iSCSI mounted on the
> nova-computes as a sharing disk and running the instances into it?
>
> The plan b is to create a volumen by node and to format it as ext3 or ext4.
>
> Any recomendations?
>
> Thanks!
>
> Regards,
> Daniel
>
> _______________________________________________
> Mailing list: https://launchpad.net/~openstack
> Post to � � : openstack [at] lists
> Unsubscribe : https://launchpad.net/~openstack
> More help � : https://help.launchpad.net/ListHelp

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Caitlin.Bestler at nexenta

Apr 24, 2012, 12:32 PM

Post #5 of 5 (294 views)
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Re: Sharing disk: OCFS2 or GFS2? [In reply to]

What do you mean by "connecting at the same time"? The semantics of a block service is that a volume is mounted by a single user at a time.
When you want something more complex you should build that with a proxy on top of the base service. What you are talking about is a very
Specialized need with your own logic on how to reconcile conflicting writes from your two mounts.

-----Original Message-----
From: openstack-bounces+caitlin.bestler=nexenta.com [at] lists [mailto:openstack-bounces+caitlin.bestler=nexenta.com [at] lists] On Behalf Of Narayan Desai
Sent: Tuesday, April 24, 2012 7:56 AM
To: Daniel Martinez
Cc: openstack [at] lists
Subject: Re: [Openstack] Sharing disk: OCFS2 or GFS2?

As far as I know, the current volume service doesn't support connecting the same volume to multiple instances at the same time, so neither of these can work directly through nova apis.
-nld

On Tue, Apr 24, 2012 at 4:44 AM, Daniel Martinez <danielfm [at] gmail> wrote:
> Hello everyone.
>
> My setup is simple. A volumen shared by iSCSI from our Netapp storage
> that I would like to use it for the instances running on our
> nova-compute nodes.
>
> Has anyone tried to use OCFS2 or GFS2 as FS via iSCSI mounted on the
> nova-computes as a sharing disk and running the instances into it?
>
> The plan b is to create a volumen by node and to format it as ext3 or ext4.
>
> Any recomendations?
>
> Thanks!
>
> Regards,
> Daniel
>
> _______________________________________________
> Mailing list: https://launchpad.net/~openstack Post to � � :
> openstack [at] lists Unsubscribe :
> https://launchpad.net/~openstack More help � :
> https://help.launchpad.net/ListHelp

_______________________________________________
Mailing list: https://launchpad.net/~openstack
Post to : openstack [at] lists
Unsubscribe : https://launchpad.net/~openstack
More help : https://help.launchpad.net/ListHelp

_______________________________________________
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Post to : openstack [at] lists
Unsubscribe : https://launchpad.net/~openstack
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