Hi there,
We've been noticing nasty multi-second cluster wide latencies if an OSD
drops out of an active cluster (due to power failure, or even being
stopped cleanly). We've also seen this problem occur when an OSD is
inserted back into the cluster.
Obviously, this has the effect of freezing all VMs doing I/O across the
cluster for several seconds when a single node fails. Is this behaviour
expected? Or have I perhaps got something configured wrong?
We're trying very hard to eliminate all single points of failure in our
architecture, is there anything that can be done about this?
Regards,
Edwin Peer
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