On Wed, Oct 8, 2014 at 2:19 AM, Shawn Edwards <lesser.evil@xxxxxxxxx> wrote: > Are there any docs on what is possible by writing/reading from the rbd > driver's sysfs paths? Is it documented anywhere? > > I've seen at least one blog post: > http://www.sebastien-han.fr/blog/2012/06/24/use-rbd-on-a-client/ about how > you can attach to an rbd using the sysfs interface, but I haven't found much > else. It's in the kernel tree, Documentation/ABI/testing/sysfs-bus-rbd. https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/ABI/testing/sysfs-bus-rbd But keep in mind that rbd map and rbd unmap commands exist for a reason and do a bit more than just writing stuff into sysfs. If you are concerned about fetching tons of packages, I think there is work underway to fix the packaging so that there is a relatively small package containing just rbd binary and ceph mount helpers that can be installed. > > A broader question: what is possible as far as communicating with ceph using > just the libceph and rbd kernel drivers? There is no way to use libceph directly. Using libceph+rbd you get an rbd client, using libceph+ceph you get a cephfs client. libceph is essentially a library where auth, crush, messenger, parts of objecter and mon and osd clients are implemented. Thanks, Ilya _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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