[yocto] pyro openembedded gpsd update-rc.d problems with read-only-rootfs

[Dan Walkes]

On Wed, Sep 13, 2017 at 10:56 AM, Dan Walkes
<danwalkes at trellis-logic.com> wrote:
> On Mon, Sep 11, 2017 at 5:01 AM, Burton, Ross <ross.burton at intel.com> wrote:
>> On 10 September 2017 at 21:35, Dan Walkes <danwalkes at trellis-logic.com>
>> wrote:
>>>
>>> It looks like because the update-rc.d step fails this setup gets moved
>>> into a gpsd post install script, which won’t work because I’m
>>> configured to use a read only root filesystem.  So I need to find a
>>> way to keep the update-rc.d step from failing.
>>
>>
>> The recipe shouldn't invoke update-alternatives directly, but use the
>> update-alternatives class instead.
>>
>
> Thanks for the suggestion Ross.
>
> I didn't mention it before but I had already attempted to make this
> change after I initially noticed the problem.  See this commit:
> https://github.com/Trellis-Logic/meta-openembedded/commit/ddf008dbdae602dbe722f1fcb231f5549e75a586
>
> I didn't see any difference when I updated to use update-alternatives
> instead of invoking directly.
>
> Since the error message was related to update-rc.d I've also attempted
> to use the multi-update form of update-rc.d in the above commit.  I
> thought that might be required when multiple packages were built from
> the same .bb file.  However, don't see a difference in the result with
> these changes either.

The fix was to specify INITSCRIPT_PACKAGES = "gpsd-conf", since the
gpsd-conf package was where the /etc/init.d/gpsd file is being
installed, per inspection of rpm files.  See the patch at
https://github.com/Trellis-Logic/meta-openembedded/commit/d91bab137dfc4f3ce6526bd8a6e95e5de7658fd5

I will submit this patch to the Openembedded-devel list unless anyone
has other/different recommended changes.