[LEDE-DEV] [PATCH] scripts/download.pl: Use CDN for kernel downloads

[Bjørn Mork]

Felix Fietkau <nbd at nbd.name> writes:
> On 2016-05-23 12:29, Petr Štetiar wrote:
>> Felix Fietkau <nbd at nbd.name> [2016-05-23 11:11:50]:
>> 
>>> On 2016-05-23 10:29, Bjørn Mork wrote:
>>> > Petr Štetiar <ynezz at true.cz> writes:
>>> > 
>>> >> -			push @mirrors, "https://kernel.org/pub/$dir";
>>> >> +			push @mirrors, "https://cdn.kernel.org/pub/$dir";
>>> >>  			push @mirrors, "ftp://kernel.org/pub/$dir";
>>> > 
>>> > Not sure that is a good idea at this point.  At least here, kernel.org
>>> > has IPv6 AAAA records while cdn.kernel.org does not:
>>>
>>> So why not add both? :)
>> 
>> If I understand it correctly, the code is going to use another mirror only if
>> the current mirror fails. In my case the download was awfully slow, but didn't
>> failed.
> You could put the CDN first, and the regular kernel.org afterwards.

Sounds like a good solution.

As for reporting this problem to the kernel.org admins:  I'm pretty sure
they are aware of the issue, and they do provide both URLs so it's not a
showstopper. I just wanted to point out the regression *replacing* the
dual stack URL would represent in OpenWrt.  Using both, with the CDN
being tried first, gets the best of both worlds

Until the CDN is dual stack, which is bound to happen sooner or later.

> Also, I think you could probably get rid of ftp://kernel.org while we're
> at it. FTP is a horrible protocol and if HTTP fails, FTP is even more
> likely to fail.

Maybe someone is preferring ftp because of the cacheability?  Or maybe
not...


Bjørn