If the kernel doesnt support mapping of
rbd image with deep-flatten feature,cephcsi
need to flatten the rbd image first and than
map the image on the node.
cephcsi first tries to add a task to flatten
the rbd image if its receives any permission
error it will try to call rbd CLI command which
is a blocking call.
This commit adds mgr caps to the csi-rbd-node user
so that cephcsi will add flatten task and return
immediate error to the kubelet, let kubelet retry
again,If we go with blocking rbd CLI call we may
end up having stale maps on the node in corner cases.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
Madhu Rajanna
Sébastien Han