Using deterministic logical unit numbers to dynamically map data volumes

A method, comprising:

• storing one or more data volumes to a storage device;
• receiving, by a processor, a request to map a given data volume to a host computer;
• identifying one or more attributes of the given data volume;
• generating, using the identified one or more attributes, a unique logical unit number (LUN) for the given data volume;
• and
• mapping the given data volume to the host computer via the unique LUN such that the unique LUN is consistently mapped across the host computer in addition to multiple other host computers using the unique LUN, thereby handling concurrent mapping requests from the host computer and the multiple other host computers using the unique LUN to mitigate LUN collisions associated with the concurrent mapping requests;
• wherein generating the LUN comprises calculating a hash function in lieu of abbreviating the one or more attributes, the hash function calculated using the one or more attributes;
• wherein each one of at least a creation date of the given volume, a size of the given volume, an identifier assigned externally by an administrator for the given volume, and an internally generated unique volume identifier are used as an input to the hash function.

A computer program product, the computer program product comprising:

• a non-transitory computer readable storage medium having computer readable program code embodied therewith, the computer readable program code comprising:
• computer readable program code configured to store one or more data volumes to a storage device;
• computer readable program code configured to receive a request to map a given data volume to a host computer;
• computer readable program code configured to identify one or more attributes of the given data volume;
• computer readable program code configured to generate, using the identified one or more attributes, a unique logical unit number (LUN) for the given data volume;
• and
• computer readable program code configured to map the given data volume to the host computer via the unique LUN such that the unique LUN is consistently mapped across the host computer in addition to multiple other host computers using the unique LUN, thereby handling concurrent mapping requests from the host computer and the multiple other host computers using the unique LUN to mitigate LUN collisions associated with the concurrent mapping requests;
• wherein the computer readable program code is configured to generate the LUN by calculating a hash function in lieu of abbreviating the one or more attributes, the hash function calculated using the one or more attributes;
• wherein each one of at least a creation date of the given volume, a size of the given volume, an identifier assigned externally by an administrator for the given volume, and an internally generated unique volume identifier are used as an input to the hash function.