Re: [RAUC] Issues when executing rauc ,while booting from usb

[Abhishek Kumar Rai <abhishekr@eximiusdesign.com>]

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Hi Enrico,

Thanks for your prompt reply.


For us the 'realpath' command is working fine. The devices do exist at the
respective location. Below are the logs from our end for the post-boot
scenario and the bootargs. It seems RAUC is trying to look for device '
00000000-01' whereas the actual device is '1b325bba-01'. Is there a way we
can configure RAUC in userspace to look for device 1b32bba-01 in place of
00000000-01?


*Kernel bootargs*

*MMC: *
Kernel command line: console=ttymxc0,115200 root=PARTUUID=*1b325bba*-01
rootwait rw *rauc.slot=A* video=mxcfb0:dev=lcd,TRULY-WVGA,if=RGB24,rotate

=3 consoleblank=0 vt.global_cursor_default=0

*USB:*

Kernel command line: console=ttymxc0,115200 root=PARTUUID=*00000000*-01
rootwait rw video=mxcfb0:dev=lcd,TRULY-WVGA,if=RGB24,rotate=3 consolebl

ank=0 vt.global_cursor_default=0


*USB post-boot logs*

*root@test:~# mount*
/dev/sda1 on / type ext4 (rw,relatime,data=ordered)
...

...
root@test:~#
root@test:~#
root@test:~#
*root@test:~# ls /dev/disk/by-partuuid/**
/dev/disk/by-partuuid/1b325bba-01  /dev/disk/by-partuuid/1b325bba-03
/dev/disk/by-partuuid/1b325bba-05
/dev/disk/by-partuuid/1b325bba-02  /dev/disk/by-partuuid/1b325bba-04
root@test:~#
root@test:~#
*root@test:~# realpath /dev/disk/by-partuuid/**
/dev/mmcblk1p1
/dev/mmcblk1p2
/dev/mmcblk1p3
/dev/mmcblk1p4
/dev/mmcblk1p5
root@test:~#
root@test:~#
*root@test:~# rauc status*
rauc-Message: Failed to resolve realpath for '/dev/disk/by-partuuid/
*00000000*-01'
Failed to determine slot states: Did not find booted slot


*MMC post-boot logs*

*root@test:~# mount*
/dev/mmcblk1p1 on / type ext4 (rw,relatime,data=ordered)
...

...
root@test:~# ls /dev/disk/by-partuuid/*
/dev/disk/by-partuuid/1b325bba-01  /dev/disk/by-partuuid/1b325bba-03
/dev/disk/by-partuuid/1b325bba-05
/dev/disk/by-partuuid/1b325bba-02  /dev/disk/by-partuuid/1b325bba-04
root@test:~#
root@test:~#
*root@test:~# realpath /dev/disk/by-partuuid/*   *

/dev/mmcblk1p1
/dev/mmcblk1p2
/dev/mmcblk1p3
/dev/mmcblk1p4
/dev/mmcblk1p5
root@test:~#
root@test:~#
root@test:~#
root@test:~#
*root@test:~# rauc status*
Compatible:  klondike-test
Variant:     (null)
Booted from: A
Activated:   rootfs.0
slot states:
  rootfs.0: class=rootfs,
device=/dev/disk/by-path/platform-219c000.usdhc-part1, type=ext4, bootname=A
      state=booted, description=, parent=(none), mountpoint=(none)
      boot status=good
  rootfs.1: class=rootfs,
device=/dev/disk/by-path/platform-219c000.usdhc-part2, type=ext4, bootname=B
      state=inactive, description=, parent=(none), mountpoint=(none)
      boot status=bad

root@test:~#

Regards,

Abhishek

On Thu, Oct 18, 2018 at 6:37 PM Enrico Joerns <ejo@pengutronix.de> wrote:

> Hi Abhishek,
>
> On 10/18/18 1:02 PM, Abhishek Kumar Rai wrote:
> > Hi Team,
> >
> > I am working on boot from a USB flash drive and try to flash the data
> (rfs/appfs) to MMC partitions using RAUC. I am  currently facing some
> issues on the same. The same scenario works well when we boot from NFS and
> try to flash the data to MMC partitions.
> >
> > By attempting to boot from a flash drive partition that has RAUC and
> trying to install the bundle to MMC are we trying to do something that RAUC
> supports or are we missing something?
> >
> > Please find the related logs for USB flash drive based RAUC installation
> attempt below
> >
> > *root@test:~# /usr/bin/rauc --mount=/run/rauc service*
> > *rauc-Message: Failed to resolve realpath for
> '/dev/disk/by-partuuid/00000000-01'*
> > rauc-Message: Failed to obtain name de.pengutronix.rauc
> > root@test:~#
> > root@test:~#
> > root@test:~#
> > *root@test:~# ps ax | grep rauc*
> > 380 ?        Ssl    0:00 /usr/bin/rauc --mount=/run/rauc service
> > 392 ttymxc0  S+     0:00 grep rauc
> > root@test:~#
> > root@test:~#
> > *root@test:~# rauc status*
> > *rauc-Message: Failed to resolve realpath for
> '/dev/disk/by-partuuid/00000000-01'*
> > Failed to determine slot states: Did not find booted slot
> > Please provide your valuable suggestions and input on the same
>
> this all shows the same issue, RAUC cannot resolve the
> /dev/disk/by-partuuid/00000000-01 symlink
> to the actual device. What does
>
>    ls -la /dev/disk/by-partuuid/00000000-01
>
> give you?
>
> What RAUC tries is pretty much the same as
>
>    realpath /dev/disk/by-partuuid/00000000-01
>
> does this work calling manually? Maybe it's an issue that you do not have
> a disk ID set.
>
>
> Best regards, Enrico
>
> --
> Pengutronix e.K.                           | Enrico Jörns                |
> Industrial Linux Solutions                 | http://www.pengutronix.de/  |
> Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-5080 |
> Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |
>
>

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