Re: CephFS Samba VFS RHEL packages

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On Fri, Jul 22, 2016 at 9:11 AM, Ira Cooper <ira@xxxxxxxxxxx> wrote:
> On Fri, Jul 22, 2016 at 08:29:39AM +1100, Blair Bethwaite wrote:
>> Ken, Ira, John -
>>
>> Thanks a lot for the replies. Our initial setup is simply running
>> samba atop a cephfs kernel mount, and initial cursory checks seem to
>> show the basics are working as expected (even clustered with ctdb -
>> what are your concerns here Ira?). Though we've yet to try any of our
>> planned test scenarios/datasets.
>>
>> From the conversation here I'm thinking we'd be better off using
>> Xenial for our CephFS+Samba test nodes at the moment... though I only
>> see packages for Precise and Trusty on gitbuilder.ceph.com at the
>> moment. We were planning to compare samba on kernel mount versus ceph
>> vfs.
>>
>> Can someone clarify what state the cephfs kernel client in RHEL 7.x
>> will be in when RHCS 2.0 is released, i.e., will that be back-ported
>> or are RHEL users expected to use FUSE? (I'm happy to go ask support
>> directly but I suspect this is useful information for others too).

We actively back-port fixes to RHEL 7.x kernel.  When RHCS2.0 release,
the RHEL kernel should contain fixes up to 3.7 upstream kernel.

Regards
Yan, Zheng

>
> Please note: icooper@xxxxxxxxxx is not on this list, so I can't
> reply from there ;).
>
> I recommend you test your setup THROUGHLY.  CTDB is really in
> place to handle failures, so test node failures.  I recommend
> hard power-offs for this.  The real world is rarely as kind
> as a "nice" poweroff, and it might trick you into thinking
> more is working than is.
>
> If you get it right, all the nodes should end up banned if I
> remember right.  It's been a bit since I tested with stock
> settings.
>
> For my setup I use:
>
> FUSE for the mount so CTDB works.
> vfs_ceph for the Samba datapath.
>
> That's what I'd recommend based on talking to people.
>
> No idea on RHCS/Kernel.
>
> Cheers,
>
> -Ira
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