On Friday, April 29, 2016, Edward Huyer <erh...@rit.edu> wrote: > This is more of a "why" than a "can I/should I" question. > > The Ceph block device quickstart says (if I interpret it correctly) not to > use a physical machine as both a Ceph RBD client and a node for hosting > OSDs or other Ceph services. > > Is this interpretation correct? If so, what is the reasoning? If not, what > is it actually saying?
It's important not to use the kernel rbd mount on a machine hosting OSDs because if it runs like on memory and tries to flush out shift pages, but the OSD needs to allocate memory to handle the write... You have a problem! Hosting all userspace processes shouldn't be a problem, though, apart from the usual resource contention problems of running hyper-converged. -Greg > > Thanks in advance. > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com <javascript:;> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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