Using the kernel driver to map RBDs to a host with OSDs is known to cause system locks. The answer to avoiding this is to use rbd-nbd or rbd-fuse instead of the kernel driver if you NEED to map the RBD to the same host as any OSDs.
On Tue, May 29, 2018 at 7:34 AM Joshua Collins <joshua.collins@xxxxxxxxxx> wrote:
Hi
I've had a go at setting up a Ceph cluster but I've ran into some issues.
I have 3 physical machines to set up a Ceph cluster, and two of these
machines will be part of a HA pair using corosync and Pacemaker.
I keep running into filesystem lock issues on unmount when I have a
machine running an OSD and monitor, while also mounting an RBD pool.
Moving the OSD and monitor to a VM so that I could mount the RBD on the
host hasn't fixed the issue.
Is there a way to set this up to avoid the filesystem lock issues I'm
encountering?
Thanks in advance
Josh
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