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[ts-7000] Re: ts7390, OpenEmbedded, QtE-4.5 and NFS root

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Subject: [ts-7000] Re: ts7390, OpenEmbedded, QtE-4.5 and NFS root
From: "charliem_1216" <>
Date: Tue, 12 May 2009 17:36:43 -0000
--- In  "Theodore A. Roth" <> wrote:
>
> More research leads me to believe that this is a problem with file
> locking and NFS. I have tried adding no_auth_nlm to the /etc/exports
> file on the NFS server which didn't help.
> 
> I also tried mounting a tmpfs partition, copying the /usr/lib/fonts
> into it and then moving (with 'mount --move') the tmpfs to
> /usr/lib/fonts, but that didn't help.

Hi Ted --

Do you have CONFIG_EMBEDDED configured in (I think it's under General)?  If so, 
there is a new selection in 2.6.28 you have to check: CONFIG_FILE_LOCKING.  The 
patch went into 2.6.28, but  lots of defconfigs weren't updated until 2.6.29 or 
.30rc.  OTOH I would have thought the 'default y' would enable it for you.

+config FILE_LOCKING
+       bool "Enable POSIX file locking API" if EMBEDDED
+       default y
+       help
+         This option enables standard file locking support, required
+          for filesystems like NFS and for the flock() system
+          call. Disabling this option saves about 11k.

> Is there any NFS magic I'm missing that will make this work? Has
> anyone else dealt with this?
> 
> My next course of action is to go back to an initrd and root on SD
> card and see if that eliminates the problem. I have been avoiding that
> due to the need to port the TS-SD module to the 2.6.29.1 kernel. I

If you get that working, a good how-to would be appreciated by lots of people 
on the list, judging by recent posts.

regards, ........ Charlie

> would rather have NFS root working since it is much more convenient
> and quicker to test my builds.
> 
> I know this is somewhat off topic, but I thought there might be some
> interest in the OpenEmbedded aspect of it. I will be pushing my
> changes up to OE once I get this working.
> 
> Thanks.
> 
> Ted Roth
>




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