Uboot NetBoot IMX8


Trevor
 

Hello Yocto Community,


I am trying to get an IMX8 board from TechNexion to boot using the netboot command from within uboot.  (IE mounting the filesystem remotely)


I have configured tftp and the NFS server and initially things seem to be working: the board boots, starts the kernel that was grabbed using tftp, and then starts using the remote filesystem.


Then the following kernel error messages are produced:




...
.....
[  OK  ] Started udev Wait for Complete Device Initialization.
[  OK  ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch.
         Mounting Kernel Debug File System...
         Mounting FUSE Control File System...
         Mounting Kernel Configuration File System...
         Starting Remount Root and Kernel File Systems...
         Mounting Temporary Directory (/tmp)...
         Mounting POSIX Message Queue File System...
         Mounting Huge Pages File System...
[  OK  ] Created slice system-systemd\x2dbacklight.slice.
[FAILED] Failed to mount Kernel Debug File System.
See 'systemctl status sys-kernel-debug.mount' for details.
[FAILED] Failed to mount FUSE Control File System.
See 'systemctl status sys-fs-fuse-connections.mount' for details.
[FAILED] Failed to mount Kernel Configuration File System.
See 'systemctl status sys-kernel-config.mount' for details.
[FAILED] Failed to start Remount Root and Kernel File Systems.
See 'systemctl status systemd-remount-fs.service' for details.
[FAILED] Failed to mount Temporary Directory (/tmp).
.....
...


systemctl status sys-kernel-debug.mount gives:




..
[[0;1;31m●[[0m sys-kernel-debug.mount - Kernel Debug File System
   Loaded: loaded (/lib/systemd/system/sys-kernel-debug.mount; static; vendor pr
eset: enabled)
   Active: [[0;1;31mfailed[[0m (Result: exit-code) since Wed 2020-03-11 00:21:16
 UTC; 12min ago
    Where: /sys/kernel/debug
     What: debugfs
     Docs: https://www.kernel.org/doc/Documentation/filesystems/debugfs.txt
           https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
  Process: 2611 ExecMount=/bin/mount debugfs /sys/kernel/debug -t debugfs [[0;1;
31m(code=exited, status=1/FAILURE)[[0m

Mar 11 00:21:16 b2qt-b9-imx8mq systemd[1]: Mounting Kernel Debug File System...
Mar 11 00:21:16 b2qt-b9-imx8mq mount[2611]: mount: only root can use "--types" o
ption (effective UID is 1000)
Mar 11 00:21:16 b2qt-b9-imx8mq systemd[1]: [[0;1;39m[[0;1;31m[[0;1;39msys-kernel
-debug.mount: Mount process exited, code=exited status=1[[0m
Mar 11 00:21:16 b2qt-b9-imx8mq systemd[1]: [[0;1;39m[[0;1;31m[[0;1;39msys-kernel
-debug.mount: Failed with result 'exit-code'.[[0m
Mar 11 00:21:16 b2qt-b9-imx8mq systemd[1]: [[0;1;31m[[0;1;39m[[0;1;31mFailed to
mount Kernel Debug File System.
..




The mount error seems prevalent across all the errors.  somehow UID is 1000 when it should be 0 during boot?



On the Host side, here are the /etc/exports options for NFS:
 *(rw,sync,insecure,no_subtree_check,no_root_squash)




Any help would be greatly appreciated, 


Thanks,

Trevor


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