2018-07-23, 05:27
@hagertyoh there were indeed several additional ext4 sanity checks added in 4.14.55: https://cdn.kernel.org/pub/linux/kernel/...og-4.14.55 (search for ext4), so maybe an older kernel would have mounted your filesystem (and you'd have file corruption problems later on), but the current mainline kernel now thinks it is corrupted and refuses to mount it.