Disable Centos disk write function

Disable Centos disk write function

A Linux file has three times by default.

• Atime: the access time to this file.

• Ctime: the time when inode of this file changes.

• Mtime: the time when the file was modified.

If there are multiple small files (for example, there are multiple small images on the Web server page), there is usually no need to record the file access time, which can reduce disk write I/O. How should we configure this?

First, modify the file system configuration file vim/etc/fstab. Then, use the noatime and nodiratime commands in the partitions that contain a large number of small files.

For example, when files such as/dev/sda5/data/pics ext3 noatime and nodiratime 0 0 are accessed, no disk I/O will be generated.