Re: State of nfs-ganesha CEPH fsal

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On Tue, Jul 28, 2015 at 8:01 AM, Burkhard Linke
<Burkhard.Linke@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> Hi,
>
> On 07/27/2015 05:42 PM, Gregory Farnum wrote:
>>
>> On Mon, Jul 27, 2015 at 4:33 PM, Burkhard Linke
>> <Burkhard.Linke@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>>>
>>> Hi,
>>>
>>> the nfs-ganesha documentation states:
>>>
>>> "... This FSAL links to a modified version of the CEPH library that has
>>> been
>>> extended to expose its distributed cluster and replication facilities to
>>> the
>>> pNFS operations in the FSAL. ... The CEPH library modifications have not
>>> been merged into the upstream yet. ...."
>>>
>>> (https://github.com/nfs-ganesha/nfs-ganesha/wiki/Fsalsupport#ceph)
>>>
>>> Is this still the case with the hammer release?
>>
>> The FSAL has been upstream for quite a while, but it's not part of our
>> regular testing yet and I'm not sure what it gets from the Ganesha
>> side. I'd encourage you to test it, but be wary — we had a recent
>> report of some issues we haven't been able to set up to reproduce yet.
>
> Can you give some details on that issues? I'm currently looking for a way to
> provide NFS based access to CephFS to our desktop machines.

Ummm...sadly I can't; we don't appear to have any tracker tickets and
I'm not sure where the report went to. :( I think it was from
Haomai...
-Greg

>
> The kernel NFS implementation in Ubuntu had some problems with CephFS in our
> setup, which I was not able to resolve yet. Ganesha seems to be more
> promising, since it uses libcephfs directly and does not need a mountpoint
> of its own.
>
> Best regards,
> Burkhard
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