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

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On Fri, Sep 17, 2021 at 8:19 AM Joshua West <josh@xxxxxxx> wrote:
>
> Thanks Patrick,
>
> Similar to Robert, when trying that, I simply receive "Error EINVAL:
> adding a feature requires a feature string" 10x times.
>
> I attempted to downgrade, but wasn't able to successfully get my mons
> to come back up, as they had quincy specific "mon data structure
> changes" or something like that.
> So, I've settled into "17.0.0-6762-g0ff2e281889" on my cluster.
>
> cephfs is still down all this time later. (Good thing this is a
> learning cluster not in production, haha)

Yes, sorry the command should have been (note for other readers,
please do not blindly do this):

ceph fs compat add_incompat 1 "base v0.20"
ceph fs compat add_incompat 2 "client writeable ranges"
ceph fs compat add_incompat 3 "default file layouts on dirs"
ceph fs compat add_incompat 4 "dir inode in separate object"
ceph fs compat add_incompat 5 "mds uses versioned encoding"
ceph fs compat add_incompat 6 "dirfrag is stored in omap"
ceph fs compat add_incompat 7 "mds uses inline data"
ceph fs compat add_incompat 8 "no anchor table"
ceph fs compat add_incompat 9 "file layout v2"
ceph fs compat add_incompat 10 "snaprealm v2"

> I began to feel more and more that the issue was related to a damaged
> cephfs, from a recent set of server malfunctions on a single node
> causing mayhem on the cluster.

No, it's not related. The fs was not damaged in any way from this situation.

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

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