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The "show-use-hierarchy" command is failing to get the details of a device after a leg is reattached with the same name. After Reattaching a same mirror leg, the "show-use-hierarchy" command is failing with the error: No device with the name <device name>". Example of this error: VPlexcli:/> show-use-hierarchy distributed-storage/distributed-devices/device_EAST_UNITY_NONPROD_255 show-use-hierarchy: Evaluation of <<show-use-hierarchy distributed-storage/distributed-devices/device_EAST_UNITY_NONPROD_255>> failed. cause: Cannot get value of attribute 'used-by'. cause: Firmware command error. cause: No device with the name <device name>.
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List the device reporting error and check if it is healthy. Example: VPlexcli:/> ll /distributed-storage/distributed-devices/device_EAST_UNITY_NONPROD_255 Attributes: Name Value ---------------------- --------------------------------- application-consistent false auto-resume true block-count 1342177280 block-size 4K capacity 5T clusters-involved [cluster-1, cluster-2] geometry raid-1 health-indications [] health-state ok locality distributed operational-status ok rebuild-allowed true rebuild-eta - rebuild-progress - rebuild-status done rebuild-type full rule-set-name cluster-2-detaches service-status running stripe-depth - system-id device_EAST_UNITY_NONPROD_255 thin-capable false transfer-size 2M virtual-volume device_EAST_UNITY_NONPROD_255_vol Check on the UI to see if the device hierarchy is visible. Follow the steps to check from the UI: Go to Provision storage -- Distributed -- Distributed DevicesSelect the Distributed device name and right click the DD name, then click the "View map" option as shown below: Example of the UI map view: If the device is present in the map view, follow the below workaround. Restart the Management console using the below command service@managementserver:~> sudo /etc/init.d/VPlexManagementConsole restart Restarting EMC VPlex Management Console... done Or refer to the article listed below on how to restart the management console: 000040517: VPLEX: How to Restart VPlexManagementConsole to Refresh VPLEX CLI or UI If the Device Map is not viewable in the UI or if the VPLEX Management console did not fix the issue, open a live chat with VPLEX support. NOTE: To open a chat with support go to https://www.dell.com/support/ once on the Support page you should see a Black menu bar, click "Contact Support" at the far right on the menu bar, this takes you to the "Contact Information" page. On the right side of the screen, you see "Dell EMC Administrative Chat," click this choice and you are taken to the Live Chat page. For the first step from the "Select Chat Topic" field click the drop-down arrow on the right and then select the related topic for the chat. Then follow the rest of the steps as asked supplying the necessary info for each questions/selection.
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