Data backup method and device and medium

Abstract

The invention relates to the field of computer storage, and discloses a data backup method and device, and a medium, and the method comprises the steps: obtaining the number information of to-be-backed-up data volumes, so as to determine the number of threads in a thread pool according to the number of the to-be-backed-up data volumes, establish the thread pool, and reduce the waste of computing resources through enabling the number of the threads to be positively correlated with the number information. If the current time meets the backup time of any data volume to be backed up, calling a thread to obtain the working state of a target data volume; and if the working state meets a preset condition, calling a thread to back up the target data volume. The threads in the thread pool are called by the timer to execute the working state and the backup task, so that a plurality of threads can execute the backup work at the same time, and data damage caused by untimely backup is prevented. According to the method, the multiple threads in the thread pool are called through the timer to concurrently execute the data backup work, so that the data volume backup efficiency is improved, and data loss caused by untimely backup is prevented.

Description

technical field [0001] The present application relates to the field of computer storage, and in particular, to a data backup method, device, and medium. Background technique [0002] In a storage system, in order to prevent data loss in the system due to factors such as equipment failure, data needs to be regularly backed up to other storage devices (such as hard disks) or the cloud. A thread with a timer is usually used to perform data synchronization of all storage volumes. When the time set by the timer is satisfied, the thread performs a data backup task to back up the data in the target storage volume. [0003] However, when there are multiple target storage volumes that need to be backed up at the same time, the data of each target storage volume can only be backed up in sequence through the thread where the timer resides, which affects the data backup efficiency. If the data backup is not timely, it is easy to cause data loss. [0004] It can be seen that how to pro...

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Problems solved by technology

[0003] However, when there are multiple target storage volumes that need to be backed up at the same time, the data of each target storage volume can only be backed up sequentially through the thread where the timer is located, which affects the data backup efficiency, and the backup time of each storage volume is too long. Data backup is not timely, which may easily lead to data loss

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