On 04/29/2013 08:16 AM, Juha Aatrokoski wrote: > I'm probably not the only one who would like to run a > distribution-provided kernel (which for Debian Wheezy/Ubuntu Precise is > 3.2) and still have a recent-enough Ceph kernel client. So I'm wondering > whether it's feasible to backport the kernel client to an earlier > kernel. The plan is as follows: > > 1) Grab the Ceph files from https://github.com/ceph/ceph-client (and put > them over the older kernel sources). If I got it right the files are: > include/keys/ceph-type.h include/linux/ceph/* fs/ceph/* net/ceph/* > drivers/block/rbd.c drivers/block/rbd_types.h That is the correct and complete list of source files. (I didn't know about include/keys/ceph-type.h.) > 2) Make (trivial) adjustments to the source code to account for changed > kernel interfaces. > > 3) Compile as modules and install the new Ceph modules under /lib/modules. > 4) Reboot to a standard distribution kernel with up-to-date Ceph client. That's roughly correct. There may be some little details (like running "depmod") but you've got it. > Now the main questions are: > > Q1: Is the Ceph client contained in the files mentioned in 1), or does > it include changes elsewhere in the kernel that cannot be built as modules? They are as you described above. > Q2: Regarding 2), are there any nontrivial interface changes i.e. Ceph > actually using newly introduced features instead of just adapting to a > changed syntax? I'm not aware of any, but I haven't tried a particular port. > Any other thoughts or comments on this? Let me know if you try it and run into trouble, I may be able to help. -Alex > _______________________________________________ > 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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