US 12,346,591 B2
Data migration between virtual tape systems using tape VOLSER conversion
Takeshi Nohta, Tsukuba (JP); Nao Takemura, Narashino (JP); Tomoaki Ogino, Chiba (JP); Taisei Takai, Tokyo (JP); and Rin Fujiwara, Chiba (JP)
Assigned to International Business Machines Corporation, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Aug. 16, 2023, as Appl. No. 18/234,836.
Prior Publication US 2025/0060896 A1, Feb. 20, 2025
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/0647 (2013.01) [G06F 3/0604 (2013.01); G06F 3/0665 (2013.01); G06F 3/067 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A computer-implemented method, the method comprising:
receiving a request to migrate data from a source virtual tape system to a destination virtual tape system,
adding, to the destination virtual tape system, a destination logical volume having a same serial number as a logical volume in the source virtual tape system having the data;
creating an interim logical volume on the destination virtual tape system;
updating a conversion table associating the serial number of the destination logical volume with a serial number of the interim logical volume;
migrating the data from the source virtual tape system to the destination logical volume;
receiving, while the data is being migrated, an access request having the serial number of the interim logical volume;
converting the access request into an access request for the logical volume being transferred using the conversion table, the access request for the logical volume being transferred thereby using the same serial number as the logical volume in the source virtual tape system;
processing the access request for the logical volume being transferred, to thereby satisfy the access request having the serial number of the interim logical volume; and
in response to completing the data migration, satisfying data access requests using the destination logical volume.