On Tue, 20 Jul 2021 at 17:12, Mikulas Patocka <mpatocka@xxxxxxxxxx> wrote: > > Hi > > Try to set up dm-verity with block size 512 bytes. > > I don't know what block size does squashfs use, but if the filesystem > block size is smaller than dm-verity block size, it doesn't work. > Okay thank you so much for this clue, It seems we are using 65536 as the squashfs block size: ==> mksquashfs [...] - comp xz -Xdict-size 32K -noI -Xbcj arm -b 65536 -processors 1 But for dm-verity we are giving block size of 4096 ==> [ 0.000000] Kernel command line:[..] verity="96160 12020 d7b8a7d0c01b9aec888930841313a81603a50a2a7be44631c4c813197a50d681 0 " rootfstype=squashfs root=/dev/mtdblock34 ubi.mtd=30,0,30 [...] root=/dev/dm-0 dm="system none ro,0 96160 verity 1 /dev/mtdblock34 /dev/mtdblock39 4096 4096 12020 8 sha256 d7b8a7d0c01b9aec888930841313a81603a50a2a7be44631c4c813197a50d681 aee087a5be3b982978c923f566a94613496b417f2af592639bc80d141e34dfe7" Now, we are checking by giving squashfs block size also as 4096 In case, if this does not work, what else could be the other option ? Can we try with initramfs approach ? Thanks, Pintu
