US 12,340,108 B2
Metadata access and conversion during storage system controller update
Shugo Ogawa, Tokyo (JP); Yoshihiro Yoshii, Tokyo (JP); Ryosuke Tatsumi, Tokyo (JP); Tomohiro Yoshihara, Tokyo (JP); Yusuke Nonaka, Tokyo (JP); and Hiroshi Miki, Tokyo (JP)
Assigned to Hitachi Vantara, Ltd., Yokohama (JP)
Filed by Hitachi, Ltd., Tokyo (JP)
Filed on Sep. 19, 2023, as Appl. No. 18/370,014.
Claims priority of application No. 2023-010756 (JP), filed on Jan. 27, 2023.
Prior Publication US 2024/0256167 A1, Aug. 1, 2024
Int. Cl. G06F 12/00 (2006.01); G06F 3/06 (2006.01)
CPC G06F 3/0643 (2013.01) [G06F 3/0604 (2013.01); G06F 3/0673 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A storage system, comprising:
a controller, wherein
the controller includes
one or more processors, and
one or more memories configured to store one or more programs to be executed by the one or more processors,
the one or more processors are configured to:
convert first metadata for controlling the storage system into second metadata, wherein the second metadata is in a format that corresponds to a new controller newly installed in the storage system,
execute control of switching an access destination between the first metadata and the second metadata according to an access control code during the conversion, and
access the first metadata without using the access control code before start of the conversion.