Disk snapshot creation method and disk snapshot creation device
A snapshot and disk technology, applied to program control devices, instruments, error detection/correction, etc., can solve the problems of long creation time of the first full snapshot, user unavailability, and storage space occupied by snapshots
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no. 1 example
[0061] The first embodiment of the present invention proposes a method for creating a disk snapshot. figure 1 Shown is a flow chart of the steps of the method for creating a disk snapshot according to the first embodiment of the present invention. Such as figure 1 As shown, the method for creating a disk snapshot in the first embodiment of the present invention includes the following steps:
[0062] S101. Provide multiple public images and initial snapshots corresponding to the public images, where the public images are associated with a public image ID;
[0063] In this step, multiple public images and initial snapshots corresponding to the public images are stored in the server. In a specific example, the user wants to download a public image from the storage server to the disk, use the public image to initialize the disk and create a virtual machine, and the user downloads the public image of a data file. Steps in Copying the public image of . In this step, since the pu...
no. 2 example
[0075] The second embodiment of the present invention proposes a method for creating a disk snapshot. figure 2 Shown is a flowchart of the steps of the method for creating a disk snapshot according to the second embodiment of the present invention. Such as figure 2 As shown, the method for creating a disk snapshot in the second embodiment of the present invention includes the following steps:
[0076] S201. Provide multiple public images and initial snapshots corresponding to the public images, where the public images are associated with a public image ID;
[0077] S202, receiving an instruction sent by the terminal to create a snapshot of the data file in the terminal disk;
[0078] S203. According to the public image ID associated with the data file, determine an initial snapshot corresponding to the public image associated with the public image ID;
[0079] S204, comparing the data file with the initial snapshot to acquire incremental data;
[0080] S205. Create a cur...
no. 3 example
[0128] The third embodiment of the present invention proposes a method for creating a disk snapshot, such as Figure 4 As shown, the method for creating the disk snapshot may include the following steps:
[0129] S301, receiving an instruction sent by the terminal to create a snapshot of the data file in the terminal disk;
[0130] S302. According to the public image ID associated with the data file, search whether there is a public image corresponding to the public image ID in the storage server;
[0131] S303. When the public image exists, compare the data file with an initial snapshot corresponding to the public image;
[0132] S304 When the data file is the same as the initial snapshot corresponding to the public image, use the initial snapshot as a current snapshot of the data file.
[0133] The above steps S301 to S303 are the same as or similar to steps S201 to S203 in the previous embodiment, and will not be repeated here. This embodiment focuses on the differences ...
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