Errors=remount-ro

errors={continue|remount-ro|panic}
             Define the behavior when an error is encountered.  (Either
             ignore errors and just mark the filesystem erroneous and
             continue, or remount the filesystem read-only, or panic and
             halt the system.)

See also

• ext4 e2fsck, fsck.ext4, superblock, inode, block size, mkfs.ext4 tune2fs, wipefs, resize2fs stat, extents, Review ext4 journalctl logs. Read-only file system, virt-resize, ACL
• File systems: mount, umount, findmnt, find, swapon, swapoff, UUID, blkid, mount options: /etc/fstab, udisksctl mount, guestmount, /proc/mounts, fstrim, systemd-mount, defaults