Disk storage space managing method, apparatus and storage device

Abstract

The invention discloses a disk storage space managing method, apparatus and storage device. The method comprises the following steps of identifying an operation that a disk is inserted into the storage device, identifying whether a newly-inserted disk carries data according to metadata and file systems carried by the disk, and preserving data of the newly-inserted disk according to a user instruction and mounting the file systems of the newly-inserted disk into a shared catalogue in the storage device or mounting file systems of a disk array RAID of the newly-inserted disk into a shared catalogue in the storage device when the newly-inserted data carries data. The apparatus comprises a data identifying module, a data reserving module and a catalogue mounting module. By the use of the method, the device and the storage device, changes of the disk of the storage device can be sensed, so the user can preserve original data of the disk.

Description

technical field [0001] The invention relates to storage technology, in particular to a disk storage space management method, device and storage device. Background technique [0002] Today, mankind has already entered the information age. Various electronic devices, such as smart phones, PCs, digital cameras, etc., are closely related to people's lives. With the emergence of Blu-ray video, lossless music, high-resolution photos, etc., the amount of household data has increased on a large scale. As a result, there is an increasing demand for home-specific storage devices. [0003] Soft RAID (Redundant Arrays of Independent Disks, disk array) refers to a disk array generated by software. By using multiple block devices (such as disks, disk partitions, logical volumes, etc.) as members, a new block device with data protection function is generated through striping and other technologies. Specifically, it refers to the block device generated by using the mdadm command with th...

AI Technical Summary

Problems solved by technology

A disk, after being pulled out and then plugged back in, although it is still the same disk at this time, the disk serial number has not changed, but the original partitions in the disk may have been deleted, modified or re-partitioned, and regardless of the home dedicated storage device When the system is recognized, whether the minor device number of the disk partition is the same as the original one, the above situations cannot be handled by the MD driver

For a brand new disk, or a disk whose data does not need to be kept, you can directly clear the data on the disk and manage it according to our method; but for the user's old disk, once the disk (or its partition) becomes a RAID members, then all the data on the disk will be lost

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