Read-only file system

Cause

Files and directories on filesystems that are mounted read-only cannot be changed.

Action

If you only modify these files and directories occasionally, rlogin(1) to the servers from which the filesystems are mounted and change the files or directories there. If you change these files and directories frequently, mount(1M) the filesystems read/write.

Technical Notes

The symbolic name for this error is EROFS, errno=30.