On 07/23/2013 06:09 AM, Oliver Schulz wrote:
Dear Ceph Experts,
I remember reading that at least in the past I wasn't recommended
to mount Ceph storage on a Ceph cluster node. Given a recent kernel
(3.8/3.9) and sufficient CPU and memory resources on the nodes,
would it now be safe to
* Mount RBD oder CephFS on a Ceph cluster node?
This will probably always be unsafe for kernel clients [1] [2].
* Run a VM that is based on RBD storage (libvirt?) and/or mounts
CephFS on a Ceph node?
Using libvirt/qemu+librbd or ceph-fuse is fine, since they are
userspace. Using a kernel client inside a VM would work too.
Josh
[1] http://wiki.ceph.com/03FAQs/01General_FAQ#How_Can_I_Give_Ceph_a_Try.3F
[2] http://permalink.gmane.org/gmane.comp.file-systems.ceph.devel/1673
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