[ovirt-users] posix compliant fs with ceph rbd

[Yura Poltoratskiy]

26.01.2017 11:11, Nir Soffer пишет:
> On Wed, Jan 25, 2017 at 8:55 PM, Yura Poltoratskiy
> <yurapoltora at gmail.com> wrote:
>> Hi,
>>
>> I want to use Ceph with oVirt in some non standard way. The main idea is to
>> map rbd volume to all computes and to get the same block device, say
>> /dev/foo/bar, across all nodes, and then use "POSIX compliant file systems"
>> option to add Storage Domain.
>>
>> Am I crazy?
> Yes
Thnx :)

>
>> If not, what should I do next: create a file system on top of
>> /dev/foo/bar, say XFS, and add DATA Domain as POSIX compliant? Does it work,
>> I mean does oVirt compatible with not clustered file system in this
>> scenario?
> This can work only for clustered file system, not with XFS. Double mounting will
> quickly corrupt the file system.
Can you tell me what FS should I choose to do some experiments?

And in general: what is use cases for option like "POSIX compliant FS"?

>
>> Mostly, I want to use rbd like oVirt do with iSCSI storage just to have
>> scalability and high availability (for example, when one storage node
>> failed).
> You have two ways to use ceph:
>
> - via cinder - you will get best performance and scalability
> - via cephfs - you will get all features, works like fault tolerant NFS
>
> Nir
>
>> Thanks for advice.
>>
>> PS. Yes, I know about Gluster but want to use Ceph :)
>>
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