On 09/02/18 09:16, Milan Buška wrote: > Hi all, > > 2018-02-08 16:20 GMT+00:00 Stephen Warren <swarren@xxxxxxxxxxxxx>: >> On 02/08/2018 05:53 AM, Mikko Perttunen wrote: >>> >>> One issue is that most of the persistent labeling schemes require an >>> initrd to interpret them. I'm using a super-simple initrd to just find the >>> first proper-looking partition and mount that, maybe I should put it >>> somewhere.. >> >> >> PARTUUID is interpreted directly by the kernel. (filesystem) UUID= does >> require an initrd to map (but it's not complex if you put the blkid tool in >> there and a shell, I believe). > > Output blkid on my device > > /dev/sda1: LABEL="ROOT-64" UUID="3d36c3b7-958d-4686-a265-83ded3e3f212" > TYPE="ext4" PARTUUID="cee24d9e-2ec5-4551-8e39-406836c497c0" > /dev/sda2: LABEL="HOME-64" UUID="c6255b12-6ad6-45f7-98bd-0ee816778c95" > TYPE="ext4" PARTUUID="470b8920-7bbf-4175-b278-60463db0499b" > /dev/sda3: LABEL="SWAP-64" UUID="a1f4730d-5851-4d27-a6f7-40f3beb9c204" > TYPE="swap" PARTUUID="cc770a46-ec00-4383-9a6b-ce1758326011" > /dev/sda4: LABEL="ROOTFS" UUID="79119161-c934-4ff9-9467-749941058279" > TYPE="ext4" PARTUUID="daa9a0dd-254f-9940-a64a-766dcaca2379" > /dev/mmcblk0: PTTYPE="gpt" > /dev/mmcblk0p1: UUID="bcff77ba-f2a3-488d-98ef-45c931147717" > TYPE="ext4" PARTLABEL="APP" > PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p2: PARTLABEL="mts-bootpack" > PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p3: PARTLABEL="cpu-bootloader" > PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p4: PARTLABEL="bootloader-dtb" > PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p5: PARTLABEL="secure-os" > PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p6: PARTLABEL="eks" PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p7: PARTLABEL="bpmp-fw" > PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p8: PARTLABEL="bpmp-fw-dtb" > PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p9: PARTLABEL="sce-fw" > PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p10: PARTLABEL="sc7" PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p11: PARTLABEL="FBNAME" > PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p12: PARTLABEL="BMP" PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p13: PARTLABEL="SOS" PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p14: PARTLABEL="kernel" > PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p15: PARTLABEL="kernel-dtb" > PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p16: PARTLABEL="CAC" PARTUUID="00000000-0000-0000-0000-000000000000" > /dev/mmcblk0p17: PARTLABEL="UDA" PARTUUID="00000000-0000-0000-0000-000000000000" > > Because mmcblk0 is PARTUUID the same for all partitions, I have > decided that this path does not lead. 182 /* 183 * Convert a name into device number. We accept the following variants: 184 * 185 * 1) <hex_major><hex_minor> device number in hexadecimal represents itself 186 * no leading 0x, for example b302. 187 * 2) /dev/nfs represents Root_NFS (0xff) 188 * 3) /dev/<disk_name> represents the device number of disk 189 * 4) /dev/<disk_name><decimal> represents the device number 190 * of partition - device number of disk plus the partition number 191 * 5) /dev/<disk_name>p<decimal> - same as the above, that form is 192 * used when disk name of partitioned disk ends on a digit. 193 * 6) PARTUUID=00112233-4455-6677-8899-AABBCCDDEEFF representing the 194 * unique id of a partition if the partition table provides it. 195 * The UUID may be either an EFI/GPT UUID, or refer to an MSDOS 196 * partition using the format SSSSSSSS-PP, where SSSSSSSS is a zero- 197 * filled hex representation of the 32-bit "NT disk signature", and PP 198 * is a zero-filled hex representation of the 1-based partition number. 199 * 7) PARTUUID=<UUID>/PARTNROFF=<int> to select a partition in relation to 200 * a partition with a known unique id. 201 * 8) <major>:<minor> major and minor number of the device separated by 202 * a colon. Doesn't option #7 work in this case? Cheers Jon -- nvpublic -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
