[LEDE-DEV] Older u-boot mangles UBI from ubinize 1.5.2

[J Mo]

On 08/11/2016 04:28 AM, J Mo wrote:
>
> Hm, I just found another example. I don't know why this didn't turn up 
> in my searches yesterday since it's a perfect match with the EXACT 
> error. This too was on a QSDK AP148:
>
> https://patchwork.ozlabs.org/patch/509468/
>
> I think I'll go rip that patch out here in a bit, recompile my image, 
> and see what happens.


Yep, I just ripped out that patch, rebuilt, and the UBI is working 
correctly-ish now:

[    3.781400] ubi0: attaching mtd11
[    4.475744] ubi0: scanning is finished
[    4.490924] ubi0 warning: print_rsvd_warning: cannot reserve enough 
PEBs for bad PEB handling, reserved 5, need 40
[    4.492040] ubi0: attached mtd11 (name "rootfs", size 64 MiB)
[    4.500155] ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 
bytes
[    4.506033] ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
[    4.512808] ubi0: VID header offset: 2048 (aligned 2048), data 
offset: 4096
[    4.519603] ubi0: good PEBs: 512, bad PEBs: 0, corrupted PEBs: 0
[    4.526430] ubi0: user volume: 3, internal volumes: 1, max. volumes 
count: 128
[    4.532680] ubi0: max/mean erase counter: 1/0, WL threshold: 4096, 
image sequence number: 1454555262
[    4.539660] ubi0: available PEBs: 0, total reserved PEBs: 512, PEBs 
reserved for bad PEB handling: 5
[    4.549141] ubi0: background thread "ubi_bgt0d" started, PID 54
[    4.558711] block ubiblock0_1: created from ubi0:1(rootfs)
[    4.563771] hctosys: unable to open rtc device (rtc0)
[    4.576690] VFS: Cannot open root device "ubi0:rootfs" or 
unknown-block(31,11): error -2
[    4.576718] Please append a correct "root=" boot option; here are the 
available partitions:
[    4.583956] 1f00             256 mtdblock0  (driver?)
[    4.596076] 1f01            1280 mtdblock1  (driver?)
[    4.601109] 1f02            1280 mtdblock2  (driver?)
[    4.606144] 1f03            2560 mtdblock3  (driver?)
[    4.611178] 1f04            1152 mtdblock4  (driver?)
[    4.616214] 1f05            1152 mtdblock5  (driver?)
[    4.621249] 1f06            2560 mtdblock6  (driver?)
[    4.626283] 1f07            2560 mtdblock7  (driver?)
[    4.631319] 1f08            5120 mtdblock8  (driver?)
[    4.636352] 1f09             512 mtdblock9  (driver?)
[    4.641387] 1f0a             512 mtdblock10  (driver?)
[    4.646423] 1f0b           65536 mtdblock11  (driver?)
[    4.651544] 1f0c             384 mtdblock12  (driver?)
[    4.656666] 1f0d            5120 mtdblock13  (driver?)
[    4.661786] 1f0e           65536 mtdblock14  (driver?)
[    4.666909] fe00            2728 ubiblock0_1  (driver?)
[    4.672103] Kernel panic - not syncing: VFS: Unable to mount root fs 
on unknown-block(31,11)


My squashfs root isn't mounting but that's another patch/issue.

So that 494-mtd-ubi-add-EOF-marker-support.patch has gotta go or get 
fixed. It's almost certainly been fking stuff up for a long time and 
just nobody noticed before now because almost nobody has a kernel in 
their UBI. It wasn't in OpenWRT AA/12.09, so it wasn't in the QSDK which 
my device is based on.