The Linux system files in the virtual machine all of a sudden become read-only issues

When both the host system and the virtual machine's IO are busy, the virtual machine's IO requests are not responding in a timely manner. Virtual Machine Linux does not know that it is running in the virtual machine, it will be considered a disk IO error, in order to protect the disk data will remount partition as read-only.

This is certainly not a problem if you just perform fsck on another disk, but if you want to modify the file, you will find that all the files are read-only and cannot be modified. Fortunately, the Mount command under Linux supports a remount option, just execute the following command:

Mount/O Rw,remount

You can re-mount the root partition to read-write status so that the necessary system configuration modifications can be completed.

The Linux system files in the virtual machine all of a sudden become read-only issues