Disk snapshot creation method, device and system and storage medium

The invention discloses a disk snapshot creation method, device and system and a storage medium. The method comprises the following steps: sending a snapshot creation command, wherein the snapshot creation command is used for indicating time points of creating snapshots by a plurality of disks; for the snapshot creation command, receiving a plurality of blocking time points for blocking the disk read-write request in the process of creating snapshots from a plurality of disks; and when the time difference maximum value among the plurality of blocking time points is smaller than a set first time difference threshold value, determining that snapshots created by the plurality of disks meet a synchronization precision requirement, and obtaining a plurality of snapshots synchronously created bythe plurality of disks. According to the method provided by the embodiment of the invention, the disk snapshot creation process can be optimized. 本发明公开了一种磁盘快照创建方法、装置、系统和存储介质。该方法包括：发送快照创建命令，快照创建命令用于指示多个磁盘创建快照的时间点；针对快照创建命令，接收来