[one-users] Use qcow and ssh tm driver for the same host

[Paulo A L Rego]

Please, forget my last question.
I read [1] again and i rephrased my question.

Each host (or cluster of hosts) must have just one system datastore, rigth?
The example in [1] for Multi-cluster is interesting, but i would like to
change that scenario. There, some hosts can access a shared directory and
other cant.
My scenario is different: all hosts can access the shared directory but
should be able to use a local storage. I mean, i would like to have two
system DS for the hosts at same time.
One shared for the users who dont care about I/O performance and desire a
fast vm creation and live migration. Another for the users who need better
I/O performance.

Is that possible?

Thanks a lot.

[1] http://opennebula.org/documentation:rel3.6:system_ds

2012/7/19 Paulo A L Rego <pauloalr.alu at gmail.com>

> Hi,
>
> 2012/7/18 Carlos Martín Sánchez <cmartin at opennebula.org>
>
>> Hi,
>>
>> If I understood correctly, you want to share the qcow datastore, but use
>> local storage for the system datastore.
>>
> To do this, simply set the ssh TM driver for the system DS [1], and make
>> sure you are exporting only /var/lib/one/datastores/100.
>>
>
> Should i still share /var/lib/one/datastores/0 with all hosts?
>
> Thanks
>
>
>> Regards
>>
>> [1] http://opennebula.org/documentation:rel3.6:system_ds
>> --
>> Carlos Martín, MSc
>> Project Engineer
>> OpenNebula - The Open-source Solution for Data Center Virtualization
>> www.OpenNebula.org | cmartin at opennebula.org | @OpenNebula<http://twitter.com/opennebula><cmartin at opennebula.org>
>>
>>
>>
>> On Wed, Jul 18, 2012 at 1:30 AM, Paulo A L Rego <pauloalr.alu at gmail.com>wrote:
>>
>>> Hello,
>>>
>>> Is there any way to use qcow and ssh transfer driver for the same host?
>>> We have a shared FS with NFS using qcow, but when a lot of VMs are
>>> launched, the storage I/O becomes a bottleneck.
>>> We want to use both shared and local images for all hosts.
>>>
>>> We created two datastores - qcow(id 100) and ssh (id 101) - and the same
>>> image was created for both.
>>> The problem is that the running VMs are always placed in
>>> /var/lib/one/datastores/0.
>>> How the shared FS is mounted in that directory, when we deploy a VM
>>> using the image on ssh datastore, the image is tranfered using ssh, but is
>>> placed on the shared FS.
>>>
>>> We would like to have two directories for running VMs. This way we
>>> could deploy on the shared FS on /var/lib/one/datastores/0 and use
>>> another directory (maybe /var/lib/one/datastores/101) for local images.
>>>
>>> Any solution?
>>>
>>> Thanks a lot.
>>> Paulo Antonio Leal Rego
>>> Federal University of Ceara - Brazil
>>>
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.opennebula.org
>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>>
>>>
>>
>
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