Product and version information:
The storage array was directly connected to the host through two redundant paths. Read/Write operations were performed on the LUN mapped to the host. After the LUN mappings were changed, we found out by scanning for LUNs on the host that LUN 0 was offline. We ran the online command on this LUN and were prompted with a message stating Error V-76-58659-54 Failed to online disk.
Delete the LUN mapping that cannot become online and then delete the LUN. Map another LUN to the host again and ensure that the LUN mapping becomes online.