(Copying from our Ceph training material https://croit.io/training ) Feature vs. kernel version layering 3.8 striping 3.10 exclusive-lock 4.9 object-map not supported fast-diff not supported deep-flatten not supported data-pool 4.11 journaling (WIP, might be in 5.0 or later) /sys/bus/rbd/supported_features was added in 4.11 and contains a bitmask of the features which are defined here: https://github.com/ceph/ceph/blob/v13.2.4/src/include/rbd/features.h#L4 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 Tel: +49 89 1896585 90 On Sun, Jan 27, 2019 at 12:02 PM Marc Schöchlin <ms@xxxxxxxxxx> wrote: > > Hello ceph-users, > > we are using a low number of rbd.ko clients with our luminous cluster. > > Where can i get information about the following questions: > > * Which features and cluster compatibility is provided by the rbd.ko module of my system? > (/sys/module/rbd/**, "modinfo rbd" not seems to provide to provide useful information on Ubuntu 16.04/18.04) > * Ubuntu 16.04/18.04 (kernel 4.15) /sys/bus/rbd/supported_features lists feature compatibility 0x187 > Is there a convenient way to find out whats provided with that kernel? > * Is there a overview for kernel releases for features and cluster compatibility? > -> i.e. which kernel version is needed to use the fast-diff feature > * What is the development-roadmap for features and cluster compatibility in rbd.ko? > * Available documentation http://docs.ceph.com/docs/luminous/rbd/rbd-ko/ and > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/Documentation/ABI/testing/sysfs-bus-rbd?h=v4.20.5 > do not provide any significant information regarding the described questions. > Did i missed important information resources? > > Best regards > Marc > > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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