Hi all, This is my first message in this list. I'm looking for advice because I have a weird silent data corruption and maybe with btrfs and the checksum capability this could be, at least, notified to the system, and detected using some btrfs-utils tool or dmesg. Imagine you have an SSD with an EXT4 partition in READ ONLY mode and inside several files. Every file is an ISO filesystem crypted with cryptsetup. Then first, the EXT4 partition in mounted then every file is mounted using losetup and crytpsetup. We have found, sometimes reading a PNG or WAV file from any of the ISO filesystems mounted, we get an error because the data is incorrect. Flushing caches and trying again don't solve the error. Maybe we have a faulty disk controller and changing the filesystem could be useful, or a RAM with some error... Changing the EXT4 to btrfs is enough to enable the checksum property or we have to change every ISO file to btrfs to enable the checksum? Thanks! Jorge
