Linux-disk management summary, linux-disk Summary

Linux-disk management summary, linux-disk Summary

This blog article mainly summarizes some Linux disk operations, including hard disk loading, partitioning (MBR and GPT partitions), partition mounting, and swap partition loading settings.

Basic commands

• Df view disk partition usage
• Du: measure the file size on the disk.
• Common commands

Considerations when reviewing disk partitions:

• The total number of primary and extended partitions cannot exceed 4.
• Up to one extended partition can be created.
• Extended partitions cannot directly access data

TIPS:
• In Linux, hardware devices are stored in the Dev directory under the root directory as files.
• Hardware devices are automatically identified by the Linux system.
• The new hard disk must be partitioned, formatted, and mounted before it can be used.
• MBR partition mode: the maximum size of a single partition is 2 TB.
• GPT partition mode: the number of Primary partitions is "almost" unlimited, and the capacity of a single partition is "almost" Unlimited. In a GPT partition, a maximum of 128 primary partitions are supported, and the size of each partition exceeds the 2 TB limit of the MBR partition. The maximum value is 18EB = 18432PB = 18874368 TB. The disadvantage is that the primary partition of GPT is not suitable for systems with X86 architecture.

What should I do when hard disk space is exhausted?

A good practice should be: Add a new hard disk to the server on the basis of retaining the original hard disk.

Add a hard disk to a VM