US 11,656,950 B2
Method, electronic device and computer program product for storage management
Jian Kang, Chengdu (CN); Chenglin Li, Chengdu (CN); Ruiyang Zhang, Chengdu (CN); Mingyi Luo, Chengdu (CN); and Hongyuan Zeng, Chengdu (CN)
Assigned to EMC IP Holding Company LLC, Hopkinton, MA (US)
Filed by EMC IP Holding Company LLC, Hopkinton, MA (US)
Filed on Sep. 11, 2020, as Appl. No. 17/18,058.
Claims priority of application No. 202010177767.7 (CN), filed on Mar. 13, 2020.
Prior Publication US 2021/0286680 A1, Sep. 16, 2021
Int. Cl. G06F 16/00 (2019.01); G06F 11/14 (2006.01)
CPC G06F 11/1458 (2013.01) [G06F 2201/84 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A storage management method, comprising:
receiving a request to copy a first source snapshot to the destination storage device, the first source snapshot having a latest creation time of all source snapshots of a set of source snapshots to be copied for the source storage object;
in response to receiving the request to copy the first source snapshot, acquiring the first source snapshot for a source storage object stored in a source storage device;
determining first difference data between the first source snapshot and the source storage object or a second source snapshot for the source storage object, creation time of the first source snapshot being associated with creation time of the second source snapshot, wherein determining the first difference data includes calculating, in response to acquiring the first source snapshot, the first difference data between the first source snapshot and the source storage object;
sending the first difference data to a destination storage device to enable the destination storage device to create a first destination snapshot for a destination storage object stored in the destination storage device based on the first difference data; and
creating, as a copy of the first source snapshot and based on the first difference data and the destination storage object, the first destination snapshot.