Method and apparatus for expanding cloud volume, and device and readable medium

A computer device, comprising:

• at least one processor, and
• a memory, wherein the memory stores computer instructions capable of running on the processor;
• and when executed by the processor, the instructions cause the processor to:
• in response to receiving a cloud volume expansion instruction in a cloud backup process, determine whether there is an Input/Output (TO) request of a host in a cloud volume and confirm a snapshot started during present cloud backup;
• in response to there being no IO request of the host in the cloud volume, expand a snapshot volume of the snapshot started during the present cloud backup and the cloud volume;
• expand a bitmap of the snapshot started during the present cloud backup, and set a bitmap obtained by expanding as a first preset value;
• after completion of a present cloud backup task, expand a snapshot volume of an another snapshot that is not started in a process of the present cloud backup;
• and
• expand a bitmap of the another snapshot that is not started in the process of the present cloud backup, and set a bitmap obtained by expanding as a second preset value.

A non-transitory computer-readable storage medium,

• the non-transitory computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the computer program is configured to cause the processor to:
• in response to receiving a cloud volume expansion instruction in a cloud backup process, determine whether there is an Input/Output (IO) request of a host in a cloud volume and confirm a snapshot started during present cloud backup;
• in response to there being no IO request of the host in the cloud volume, expand a snapshot volume of the snapshot started during the present cloud backup and the cloud volume;
• expand a bitmap of the snapshot started during the present cloud backup, and set a bitmap obtained by expanding as a first preset value;
• after completion of a present cloud backup task, expand a snapshot volume of an another snapshot that is not started in a process of the present cloud backup;
• and
• expand a bitmap of the another snapshot that is not started in the process of the present cloud backup, and set a bitmap obtained by expanding as a second preset value.