On May 21, 2011, at 3:45 PM, Lee Davis wrote: > I'm setting up a Linux system with full disk encryption. I've written a script (to run on every boot) which will verify that neither the MBR or /boot partition (ext4) has been modified. > > Problem is that every time I boot up the system, my /boot partition hashes differently. > > I'm guessing there is something behind the scenes which is changed/updated each time the filesystem is mounted? If so, can it be disabled? Yes, there is a last mounted time in the superblock. If you mount the file system read-only, then not only will that field not be changed, but you can guarantee that nothing else will change... -- 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
