A host cannot recognize FC-SAN storage block devices. How do I resolve this?

Solution

  1. Try the following approaches:

  2. Verify that all hosts in the cluster can recognize the same LUN device information.

    Run multipath -ll to check whether the multipath output is consistent across all hosts.

  3. If the output is inconsistent, run rescan-scsi-bus.sh -a on the affected host to rescan the SAN storage.

  4. Verify that the host can now recognize the FC-SAN storage block devices.

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