I just had a random thought. Which bootloader are you using? Is it grub, or grub2 per chance? I wonder if it's grub modifying the file system and touching the superblock, and not knowing about the new metadata checksum feature.... - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html