----- Ursprüngliche Mail ----- > Von: "Pintu Agarwal" <pintu.ping@xxxxxxxxx> > An: "richard" <richard@xxxxxx> > CC: "Greg KH" <greg@xxxxxxxxx>, "linux-kernel" <linux-kernel@xxxxxxxxxxxxxxx>, "linux-mtd" > <linux-mtd@xxxxxxxxxxxxxxxxxxx>, "linux-fsdevel" <linux-fsdevel@xxxxxxxxxxxxxxx>, "Phillip Lougher" > <phillip@xxxxxxxxxxxxxxx>, "Sean Nyekjaer" <sean@xxxxxxxxxx>, "Kernelnewbies" <kernelnewbies@xxxxxxxxxxxxxxxxx> > Gesendet: Montag, 19. Juli 2021 11:09:46 > Betreff: Re: MTD: How to get actual image size from MTD partition > On Fri, 16 Jul 2021 at 21:56, Richard Weinberger <richard@xxxxxx> wrote: > >> >> My requirement: >> >> To find the checksum of a real image in runtime which is flashed in an >> >> MTD partition. >> > >> > Try using the dm-verity module for ensuring that a block device really >> > is properly signed before mounting it. That's what it was designed for >> > and is independent of the block device type. >> >> MTDs are not block devices. :-) >> > Is it possible to use dm-verity with squashfs ? > We are using squashfs for our rootfs which is an MTD block /dev/mtdblock44 Well, if you emulate a block device using mtdblock, you can use dm-verity and friends. Also consider using ubiblock. It offers better performance and wear leveling support. Thanks, //richard
