Shulou(Shulou.com)05/31 Report--

This article will explain in detail how to easily solve the problem of disappearing space on the Linux platform. The content of the article is of high quality, so the editor shares it for you as a reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

After a long period of development of Linux, many users know Linux very well. We often encounter some problems, such as the high-risk state of the disappearance of Linux platform space, how to solve the problem of Linux platform space disappearance.

Log in to the server, do a general check, and find a strange phenomenon.

If you add up all the usage space under the root directory, there is only insufficient 9GB, but you can see the "used" space of 14GB from the return result of "df-h".

The legendary psychic phenomenon has finally appeared!

Ask google master, keywords: "linux hard disk space disappears"; "linux df return value problem"

Unfortunately, there is so much spam that there is no information worth using for reference.

Twenty minutes later, the problem was finally found.

Key commands:

/ usr/sbin/lsof | grep deleted

The lsof command is a basic command of linux that displays the open file, list open files, with a return value similar to:

COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME

Java 2132 root 28u REG 253 REG 0 4582428 1835079 / var/confluence/temp/javadoc/javadoc-Test.zip (deleted)

The deleted at the end indicates that the file has been deleted, but because the java process opened the file, the file still exists on the hard disk, but it cannot be recognized by the file system, and the df command includes this part of the file when calculating the used space.

So the problem was found. The solution is simple: restart the process that opened the file.

On how to easily solve the problem of the disappearance of Linux platform space to share here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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