Hi! Sometimes when we upgrade our cephadm-managed 16.2.x cluster, cephadm decides that it's safe to upgrade a bunch of OSDs at a time, as a result sometimes RBD-backed Openstack VMs appear to get I/O stalls and read-only filesystems. Is there a way to make cephadm upgrade fewer OSDs at a time, or perhaps upgrade them one by one? I don't care if that takes a lot more time, as long as there's no I/O interruption. I would appreciate any advice. Best regards, Zakhar _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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