USING METADATA TO SELECTIVELY PERFORM DATA PRESTAGING
개요
출원인
International Business Machines Corporation
발명자
Roderick Guy Charles Moore; Paul A. Broadhurst
IPC 분류
CPC 분류
A computer-implemented method, according to one approach, includes: receiving a read request for data in memory and analyzing metadata from volumes that contain the requested data. The metadata maps sequential logical addresses of the requested data to their corresponding physical addresses. The computer-implemented method also includes determining whether the corresponding physical addresses storing the requested data are sequential. In response to determining that at least a predetermined number of the corresponding physical addresses are sequential, the requested data is prestaged from the sequential ones of the physical addresses. However, in response to determining that fewer than the predetermined number of the corresponding physical addresses are sequential, the computer-implemented method includes intentionally refraining from prestaging any of the requested data from the physical addresses.
원문 (중국어)
A computer-implemented method, according to one approach, includes: receiving a read request for data in memory and analyzing metadata from volumes that contain the requested data. The metadata maps sequential logical addresses of the requested data to their corresponding physical addresses. The computer-implemented method also includes determining whether the corresponding physical addresses storing the requested data are sequential. In response to determining that at least a predetermined number of the corresponding physical addresses are sequential, the requested data is prestaged from the sequential ones of the physical addresses. However, in response to determining that fewer than the predetermined number of the corresponding physical addresses are sequential, the computer-implemented method includes intentionally refraining from prestaging any of the requested data from the physical addresses.