Repair Technology for Linux File System corruption

The repair technology of Linux File System damage sometimes faces such an error when maintaining the Linux server, that is, the file System becomes (Read Only System), that is, the file System becomes Read-Only, there are two possible causes for this problem: one is the synchronization mechanism during multi-host writing, and the other is the server power failure when writing data to a single machine. When this problem occurs, the application system users will be very nervous. When you are lucky, you can read data in read-only mode. If you are lucky, the system cannot start. Here is a solution: (1) Modify/etc/fstab and comment out the damaged file system first. If the file cannot be read or written, mount-o remount rw is used, /change the file system to read/write mode. (2) Execute The fsck command for the damaged file system, such as fsck/dev/sda1. Note: (1) it is best to back up data before execution to prevent data loss after restoration failure.