kernel compression with lzma

[John Frankish]

-----Original Message-----
From: lfs-dev-bounces at linuxfromscratch.org [mailto:lfs-dev-bounces at linuxfromscratch.org] On Behalf Of Tobias Gasser
Sent: 20 June, 2009 04:10
To: LFS Developers Mailinglist
Subject: Re: kernel compression with lzma

Bruce Dubbs schrieb:
> Tobias Gasser wrote:
>> kernel 2.26.30 allows compression with gz, bz2 and lzma
>
>> my current kernel-sizes:
>> gzip         1913696
>> bzip2                1820944
>> lzma         1605712
>
> When the smallest disk dive you can get right now is about 160G, does 215K
> really make a difference?

good argument. (btw: i still can order new 80gb 3.5" or 30gb 2.5", but
your argument keeps valid even with a 4gb ssd)

but as the kernel maintainers decided to make this option available, i
think we should offer the tools to use it.


>> i propose to include the xz and not lzma in
>> the book to be able to compress the kernel with any method the user
>> wishes.
>
> I would think a more logical place would be BLFS.

i don't mind.

as the kernel compile does not check wether lzma is possible but just
starts compiling resulting in a failure at the very end, i propose at
least a hint in the kernel section about not to use lzma unless the
corresponding chapter from blfs is done.

within the next days i'll rebuild my usb-rescue-stick with a compressed
kernel. maybe it will boot a little faster...


tobias
--
Try tinycorelinux as a usb rescue stick  - I have to insert "waitusb" to slow the boot down (and the kernel is gz compressed)...