Hi Paul, thanks for the quick reply. I am still a bit puzzled as the documentation states: "To allow use of the feature, you must tell the cluster that it only needs to support luminous (and newer) clients with: ceph osd set-require-min-compat-client luminous" That of course in my case fails with: Error EPERM: cannot set require_min_compat_client to luminous: 29 connected client(s) look like jewel (missing 0x800000000000000); 1 connected client(s) look like jewel (missing 0x800000000000000); add --yes-i-really-mean-it to do it anyway Should I just go ahead? My guess is that those clients (that are CephFS clients using the kernel driver) will not be able to mount the filesystem anymore. Mattia On 7/9/19 4:23 PM, Paul Emmerich wrote: > Yes, upmap will work with 4.15. The Ceph kernel client is a completely > independent implementation from the user space client, so you can't > really map it to any specific features. It has some Luminous features > but lacks others. > > > Paul > -- > Paul Emmerich > > Looking for help with your Ceph cluster? Contact us at https://croit.io > > croit GmbH > Freseniusstr. 31h > 81247 München > www.croit.io <http://www.croit.io> > Tel: +49 89 1896585 90 > > > On Tue, Jul 9, 2019 at 4:20 PM Mattia Belluco <mattia.belluco@xxxxxx > <mailto:mattia.belluco@xxxxxx>> wrote: > > Hello ml, > > I have been looking for an updated table like the one you can see here: > > https://ceph.com/geen-categorie/feature-set-mismatch-error-on-ceph-kernel-client/ > > > Case in point we would like to use upmap on our ceph cluster (currently > used mainly for CephFS) but `ceph feature` return: > > "client": [ > { > "features": "0x7010fb86aa42ada", > "release": "jewel", > "num": 69 > }, > ] > > despite the CephFS clients running with a fairly recent 4.15 kernel. > > If anyone has any pointers they would be most welcome > > Kind regards > > Mattia > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx <mailto:ceph-users@xxxxxxxxxxxxxx> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > -- Mattia Belluco S3IT Services and Support for Science IT Office Y11 F 52 University of Zürich Winterthurerstrasse 190, CH-8057 Zürich (Switzerland) Tel: +41 44 635 42 22 _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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