You already have the correct option, there's not much to it:
mount -t ceph mon1,mon2,mon3:/<path>/ -o
name=<client>,secretfile=<keyring_file>,mds_namespace=<otherfs>
/<mountpoint>/
If your caps and path restrictions are correct this should work.
Zitat von Jarett DeAngelis <jarett(a)reticulum.us>us>:
Thanks. I’m now trying to figure out how to get
Proxmox to pass the
“-o mds_namespace=otherfs” option to its mounting of the filesystem,
but that’s a bit out of scope for this list (though if anyone has
done this please let me know!).
> On Mar 31, 2020, at 2:15 PM, Nathan Fish <lordcirth(a)gmail.com> wrote:
>
> Yes, standby (as opposed to standby-replay) MDS' form a shared pool
> from which the mons will promote an MDS to the required role.
>
> On Tue, Mar 31, 2020 at 12:52 PM Jarett DeAngelis
> <jarett(a)reticulum.us> wrote:
>>
>> So, for the record, this doesn’t appears to work in Nautilus.
>>
>>
>>
>> Does this mean that I should just count on my standby MDS to “step
>> in” when a new FS is created?
>>
>>> On Mar 31, 2020, at 3:19 AM, Eugen Block <eblock(a)nde.ag> wrote:
>>>
>>>> This has changed in Octopus. The above config variables are removed.
>>>> Instead, follow this procedure.:
>>>>
>>>>
https://docs.ceph.com/docs/octopus/cephfs/standby/#configuring-mds-file-sys…
>>>
>>> Thanks for the clarification, IIRC I had troubles applying the
>>> mds_standby settings in Nautilus already, but I haven't verified
>>> yet so I didn't mention that in my response. I'll take another
>>> look at it.
>>>
>>>
>>> Zitat von Patrick Donnelly <pdonnell(a)redhat.com>om>:
>>>
>>>> On Mon, Mar 30, 2020 at 11:57 PM Eugen Block <eblock(a)nde.ag>
wrote:
>>>>> For the standby daemon you have to be aware of this:
>>>>>
>>>>>> By default, if none of these settings are used, all MDS daemons
>>>>>> which do not hold a rank will
>>>>>> be used as 'standbys' for any rank.
>>>>>> [...]
>>>>>> When a daemon has entered the standby replay state, it will only
be
>>>>>> used as a standby for
>>>>>> the rank that it is following. If another rank fails, this
standby
>>>>>> replay daemon will not be
>>>>>> used as a replacement, even if no other standbys are available.
>>>>>
>>>>> Some of the mentioned settings are for example:
>>>>>
>>>>> mds_standby_for_rank
>>>>> mds_standby_for_name
>>>>> mds_standby_for_fscid
>>>>>
>>>>> The easiest way is to have one standby daemon per CephFS and let
them
>>>>> handle the failover.
>>>>
>>>> This has changed in Octopus. The above config variables are removed.
>>>> Instead, follow this procedure.:
>>>>
>>>>
https://docs.ceph.com/docs/octopus/cephfs/standby/#configuring-mds-file-sys…
>>>>
>>>> --
>>>> Patrick Donnelly, Ph.D.
>>>> He / Him / His
>>>> Senior Software Engineer
>>>> Red Hat Sunnyvale, CA
>>>> GPG: 19F28A586F808C2402351B93C3301A3E258DD79D
>>>
>>>
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