On Wed, Mar 7, 2018 at 5:29 AM, John Spray <jsp...@redhat.com> wrote:
> On Wed, Mar 7, 2018 at 10:11 AM, Dan van der Ster <d...@vanderster.com> wrote:
>> Hi all,
>> What is the purpose of
>>    ceph mds set max_mds <int>
>> ?
>> We just used that by mistake on a cephfs cluster when attempting to
>> decrease from 2 to 1 active mds's.
>> The correct command to do this is of course
>>   ceph fs set <fsname> max_mds <int>
>> So, is `ceph mds set max_mds` useful for something? If not, should it
>> be removed from the CLI?
> It's the legacy version of the command from before we had multiple
> filesystems.  Those commands are marked as obsolete internally so that
> they're not included in the --help output, but they're still handled
> (applied to the "default" filesystem) if called.
> The multi-fs stuff went in for Jewel, so maybe we should think about
> removing the old commands in Mimic: any thoughts Patrick?

These commands have already been removed (obsoleted) in master/Mimic.
You can no longer use them. In Luminous, the commands are deprecated
(basically, omitted from --help).

See also: https://tracker.ceph.com/issues/20596

Patrick Donnelly
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