The rbd export-diff / import-diff commands are very slow during transfers even when the 'rbd-concurrent-management-ops' option is increased
Issue
- When transferring large amounts of data from one rbd to another using the
rbd export-diffandrbd import-diffcommands very slow transfer speeds are observed. - Modifying the
rbd-concurrent-management-opsoption does not improve the behavior.
Environment
- Red Hat Ceph Storage 1.3+
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