Thanks all for the clarification.

Best,
Martin

On Mon, Dec 5, 2016 at 2:14 PM, John Spray <[email protected]> wrote:
> On Mon, Dec 5, 2016 at 12:35 PM, David Disseldorp <[email protected]> wrote:
>> Hi Martin,
>>
>> On Mon, 5 Dec 2016 13:27:01 +0100, Martin Palma wrote:
>>
>>> Ok, just discovered that with the fuse client, we have to add the '-r
>>> /path' option, to treat that as root. So I assume the caps 'mds allow
>>> r' is only needed if we also what to be able to mount the directory
>>> with the kernel client. Right?
>>
>> IIUC, this was recently fixed in the kernel client via:
>> commit ce2728aaa82bbebae7d20345324af3f0f49eeb20
>> Author: Yan, Zheng <[email protected]>
>> Date:   Wed Sep 14 14:53:05 2016 +0800
>>
>>     ceph: avoid accessing / when mounting a subpath
>
> Correct.  Clients with a "path=" restriction only need the global
> "allow r" if the client is buggy (as the kernel client was[1] before
> Zheng's fix).
>
> This functionality has had more testing with the fuse client because
> it is used with OpenStack Manila.
>
> John
>
> 1. http://tracker.ceph.com/issues/17191
>
>
>
>
>> Cheers, David
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