Re: Meaning of Ceph MDS / Rank in "Stopped" state.

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Hello Wesley,

On Wed, May 29, 2019 at 8:35 AM Wesley Dillingham
<wdillingham@xxxxxxxxxxx> wrote:
> On further thought, Im now thinking this is telling me which rank is stopped (2), not that two ranks are stopped.

Correct!

> I guess I am still curious about why this information is retained here

Time has claimed that secret.

> and can rank 2 be made active again?

Yes.

> If so, would this be cleaned up out of "stopped"?
>
> The state diagram here: http://docs.ceph.com/docs/master/cephfs/mds-states/
>
> seems to indicate that once a rank is "Stopped" it has no path to move out of that state. Perhaps I am reading it wrong.

Well, we didn't document the transitions for rank "states" in this
diagram so we don't show that. The path out of "down:stopped" is to
increase max_mds so the rank is reactivated.

-- 
Patrick Donnelly, Ph.D.
He / Him / His
Senior Software Engineer
Red Hat Sunnyvale, CA
GPG: 19F28A586F808C2402351B93C3301A3E258DD79D
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