Multipath errors reported when moving pod from one worker node to another while using IBM CSI driver in OCS cluster

Solution Verified - Updated -


  • IBM CSI driver fails to clear multipath device maps and uderlying subpaths after deleting
  • Below errors logged when pod is scheduled to another worker node in OCS cluster
Aug 27 15:56:43 workernodeX multipathd: 67:224: path wwid appears to have changed. Using map wwid.  <<<
Aug 27 15:56:43 workernodeX multipathd: 68:0: path wwid appears to have changed. Using map wwid.
Aug 27 16:04:12 workernodeX hyperkube: E0827 16:04:12.535818    2873 xxx] Operation for "{volumeName:<ibm_csi>^SVC:6005076400810325900000000000016E podName: nodeName:}" failed. No retries permitted until 2021-08-27 16:06:14 (durationBeforeRetry 2m2s). Error: "UnmountDevice failed for volume \"pvc-6c7f2a96-862b-42f5-a1e2-31431e937f71\" (UniqueName: \"<ibm_csi>^SVC:6005076400810325900000000000016E\") on node \"worker2.tjcocp\" : attacher.UnmountDevice failed: rpc error: code = Internal desc = Multipath device [/dev/dm-16] was found as WWN [6005076400810325900000000000016e] via multipath -ll command, BUT sg_inq identify this device as a different WWN: [6005076400810325900000000000016b]. Check your multipathd."


  • Openshift Container Storage
  • Openshift Container Platform
  • IBM CSI Driver
  • IBM array with FCoE SAN

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