Linuxexit code > 0
Read-only file system
$touch: cannot touch 'file': Read-only file system
Analysis
The filesystem is mounted as read-only, preventing any modifications.
Common Triggers
- ●Filesystem corruption detected (OS remounts as RO for safety).
- ●Running inside a read-only container/volume.
- ●Incorrect
/etc/fstaboptions.
Debug Checks
- $Check mount status:
mount | grep " ro,". - $Check kernel logs:
dmesg | grep -i error.
Resolution
1
Remount as RW:
mount -o remount,rw /mountpoint (if healthy).2
Run
fsck to fix corruption (requires unmounting).Metadata
- Tool
- Linux
- Severity
- High
- Tags
- #linux#filesystem#mount