wic: squashfs does support partition uuid.
wic allows the user to create disk image and reference each created
partitions via its partition UUID.
squashfs does not support filesystem UUID but it does offer support for
partition UUID.
$ lsblk -o NAME,FSTYPE,UUID,PARTUUID
NAME FSTYPE UUID PARTUUID
sda
|-sda1 vfat 6078-ACD0
95aa4ffb-741d-4d99-adf6-
0358bc890046
|-sda2 squashfs
7d46da2d-29cc-4d5a-9e39-
d0381c4abb0c
|-sda3 squashfs
d4a3e24e-410a-4f2c-8ad5-
8f8321de177b
|-sda4 ext4
d72ec529-78e4-4cd3-b39b-
781b6b1cb47c f3edc990-f4f6-4536-9587-
44dae4ceb99f
`-sda5 ext4
a0b265aa-e935-40b8-9c6b-
e9e58ad3890f 6e72ebaa-29ed-41cd-844c-
3f76976cf41d
Modifying this constrain allows a user to create squashfs-based rootfs and boot
from them with such kernel argument 'root=PARTUUID=
7d46da2d-29cc-4d5a-9e39-
d0381c4abb0c'
Fixes: 2fbdcf4e59c8 ("wic: kparser.py: Check for SquashFS and use-uuid")
Signed-off-by: Emmanuel Roullit <emmanuel.roullit@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
