Hi, let's suppose an embedded system with a read-only squashfs root file system, and a writable ext4 data partition with data=journal. Furthermore, the data partition shall be protected with dm-integrity. Normally, I'd umount the data partition while shutting down the system. There might be cases though where power is cut. In such a case, there'll be ext4 recoveries, which is ok. How robust would such a setup be? Are there chances that the ext4 requires a fsck? What might happen if fsck is not run, ever? Is there a chance that the data partition can't be mounted at all? How often might that happen? Thx regards Kai
