On Fri, Dec 20, 2013 at 6:33 PM, Jeff Layton <jlay...@redhat.com> wrote:
>
> Perhaps a better solution for this would be to instead export an
> env var with a list of the compression algorithms that the kernel
> supports. Then installkernel or dracut could use that info to make a
> semi-intelligent decision based on that and what tools are installed.
>
> ...or maybe a separate env var for each one that it supports:
>
> $INITRD_COMPRESS_LZ4
> $INITRD_COMPRESS_BZIP2
> $INITRD_COMPRESS_GZIP
>
> ...etc.
Agreed, either of those would work.
Of course, so does just "distro selects whatever compression method it
thinks is best, and when you compile a kernel for that distro, you
need to make sure that that kernel knows how to uncompress the
initrd".
Which quite frankly is the sanest approach of all. *Especially*
considering that right now we default to supporting all the initrd
compression methods.
And it has the advantage of not needing anything like this at all.
When you compile a kernel, you already need to compile in support for
the stuff the distro needs. This is no different, really.
So I think the whole "kernel tells the distro what compression method
to use" approach is broken and silly, and the wrong way around.
Linus
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