Re: Cephfs - MDS all up:standby, not becoming up:active

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Hello Joshua,

On Tue, Aug 10, 2021 at 11:44 AM Joshua West <josh@xxxxxxx> wrote:
>
> Related: Where can I find MDS numeric state references for ceph mds
> set_state GID <int(state)>?
>
> Like a dummy I accidentally upgraded to the ceph dev branch (quincy?),
> and have been having nothing but trouble since. This wasn't actually
> intentionally, I was trying to implement a PR which was expected to
> bring my cluster back online.
> --> It did bring my cluster back online, so that's good, but I failed
> to recognize that by building from the master branch that I also
> wouldn't be able to revert later. Whoops.
>
>
> Lastly, while my MDS are online (MONs, OSDs and MGRs too.) MDSs are
> never marked up:active, so my cephfs data is inaccessible.
>
> Hoping someone can help me determine the best way to bring an MDS up:active.

Your MDSMap compat is probably what's preventing promotion of
standbys. That's a new change in master (which is also being
backported to Pacific). Did you downgrade back to Pacific?

Try:

for i in $(seq 1 10); do ceph fs compat <fsname> add_incompat $i; done

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

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