Re: Write-protect $DL_DIR

[Gary Thomas <gary@mlbassoc.com>]

On 12/21/2010 02:27 PM, Richard Purdie wrote:
> On Tue, 2010-12-21 at 11:56 -0700, Gary Thomas wrote:
>> On 12/21/2010 09:39 AM, Scott Garman wrote:
>>> On 12/21/2010 07:45 AM, Gary Thomas wrote:
>>>> In my quest for a well-packaged Poky that I can distribute
>>>> to my customers, I'd like to give them a pre-populated $DL_DIR
>>>> tree (also in response to those customers that have little or
>>>> no net access). This would likely be in /opt/XYZ and practice
>>>> would dictate that it be read-only.
>>>>
>>>> Sadly, this doesn't work. When I try to build Poky with a
>>>> read-only $DL_DIR, it simply hangs on every 'fetch' step.
>>>>
>>>> Note: I could avoid this problem (although I think it's a
>>>> bug even if it should never be experienced) by being able
>>>> to easily provide source mirrors for the packages. So far,
>>>> I've not figured out how to do this; I'd like to add my
>>>> own mirror lists, similar to those in meta/classes/poky.bbclass
>>>> Would this be a way forward? If so, how?
>>>>
>>>> Thanks for any ideas
>>>
>>> Hi Gary,
>>>
>>> Being able to do this is an important priority. Please file a bug to
>> track it if there isn't a current workaround.
>>
>> Done, bug #606.
>
> Sorry but this isn't what is being asked and I don't think that bug is
> reasonable. DL_DIR needs to be writeable. You can implement a readonly
> mirror just fine without requiring that so we have what I think is a
> very reasonable way to solve the problem.

>> I'll also look at Richard's new support for MIRRORS/PREMIRRORS
>> to see how to make it work for my environment.
>
> Please do this and report back on how you get one. I'm fine with
> documenting this and making things clearer. Turning DL_DIR into some new
> mirror and having a new writable area for state information isn't the
> right way to solve this problem though when we have mirror handling for
> exactly this kind of use case already.

I understand that these are really [now] two separate things.
I had been trying to use $DL_DIR as a pure mirror, but your change
of today will make that no longer necessary.

I went ahead and filed the bug about a read-only $DL_DIR because
it causes the build to hang/build silently which could cause confusion.
The build should either fail at fetch time with a message or be
sanity checked.

I've tried your changes and they solve my problem well, thanks.

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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