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NFS support for RB5 kernel?
da.teng
Join Date: 20 Jun 21
Posts: 16
Posted: Sun, 2021-06-20 08:15
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I'm using Thundercomm's sdkmanager to flash image onto the RB5 board. For the image I flash, it has very limited kernel modules included. It doesn't even have nfs included. I wonder what's the recommended way (no so complicated) to generate bootable image for RB5, that has a more kernel modules supported?

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Re: NFS support for RB5 kernel?
kevin.dai
Join Date: 21 Oct 20
Posts: 137
Posted: Mon, 2021-06-21 13:25
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 Currently the sdkmanger can flash prebiuilt kenel image to device .If you want to configure and build kernel image, you should have source code, and reconfigure kenrel and build it.  I wonder if you have source code paackage? 

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Re: NFS support for RB5 kernel?
da.teng
Join Date: 20 Jun 21
Posts: 16
Posted: Fri, 2021-06-25 14:06
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I downloaded code from chipcode and code aurora forum and following

  QRB5165.LE.1.0 LEPDK QUICK START GUIDE

   Apr 15, 2021

  Rev A
80-27572-3
PDF

to build a Linux image.

Is this the right process, am I following the right documentation? Also, I'm using version

QRB5165.LE.1.0 AMSS OEM

to build the image. I also see other versions as well on the website. Is this the right version to use?

 

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Re: NFS support for RB5 kernel?
kevin.dai
Join Date: 21 Oct 20
Posts: 137
Posted: Tue, 2021-06-29 12:12
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Hi da.teng

I think you should follow up releasenote and get software package from Thundercomm, then configure your Kenrel and build kernel  to support NFS.  Please check Thundercomm server support ( [email protected]) for your permission to download software package.

Thanks

Kevin

 

 

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Re: NFS support for RB5 kernel?
da.teng
Join Date: 20 Jun 21
Posts: 16
Posted: Sat, 2021-07-03 10:14
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I was able to get source code for LE image and build successfully. The image was able to flash and boot. I tried to enable nfs on the board by setting

DISTRO_FEATURES_append = " nfs"

EXTRA_IMAGE_FEATURES += "nfs-client"

After that, I was able to boot the image and find mount.nfs was on the filesystem. However, when I actually mount something from other device on the network it complains:

mount.nfs: No such device

And when I do modprobe nfs it says 

modprobe: FATAL: Module nfs not found in directory /lib/modules/4.19.157-perf

And here is the message I got from dmesg | grep nfs

[    7.323526] systemd[597]: proc-fs-nfsd.mount: Failed to connect stdout to the journal socket, ignoring: No such file or directory
[    7.326328] request_module fs-nfsd succeeded, but still no fs?
[    7.337908] systemd[1]: proc-fs-nfsd.mount: Mount process exited, code=exited, status=32/n/a
[    7.338655] systemd[1]: proc-fs-nfsd.mount: Failed with result 'exit-code'.
[    7.346027] systemd[1]: nfs-mountd.service: Job nfs-mountd.service/start failed with result 'dependency'.
[    7.346754] systemd[1]: nfs-server.service: Job nfs-server.service/start failed with result 'dependency'.
[    7.454332] systemd[649]: proc-fs-nfsd.mount: Failed to connect stdout to the journal socket, ignoring: No such file or directory
[    7.459122] systemd[1]: proc-fs-nfsd.mount: Mount process exited, code=exited, status=32/n/a
[    7.460157] systemd[1]: proc-fs-nfsd.mount: Failed with result 'exit-code'.
[    8.235626] systemd[726]: proc-fs-nfsd.mount: Failed to connect stdout to the journal socket, ignoring: No such file or directory
[    8.241962] systemd[1]: proc-fs-nfsd.mount: Mount process exited, code=exited, status=32/n/a
[    8.243164] systemd[1]: proc-fs-nfsd.mount: Failed with result 'exit-code'.

 

Any idea how to actually enable NFS on the image?

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Re: NFS support for RB5 kernel? — Best Answer
da.teng
Join Date: 20 Jun 21
Posts: 16
Posted: Mon, 2021-07-05 09:35
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Just got NFS to work on the device. I guess the key here is to enable Kernel support by adding the necessary config items. I did it through changing recipe-kernel under meta-qti-bsp. I added the following two config items:

CONFIG_NFS_FS=y

CONFIG_NFSD=y

Then you still have to add the necessary package (nfs-utils) through yocto.

After that, the kernel has build error with with NFS enabled. You need the following changes in the kernel source code to pass the compilation:

fs/nfs/read.c

--- readpage_async_filler(filler_t * data, struct page *page)

+++ readpage_async_filler(void *data, struct page *page)

Then flashing the images on the board should enable NFS on the board.

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Re: NFS support for RB5 kernel?
kevin.dai
Join Date: 21 Oct 20
Posts: 137
Posted: Tue, 2021-07-06 14:54
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Great! You got it

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