Re: tar vs cpio (was: Booting a modular kernel through a multiple streams file)

From: H. Peter Anvin (hpa@zytor.com)
Date: Sun Dec 23 2001 - 04:53:05 EST


Ryan Cumming wrote:

>
> What about recycling a big-endian version of cramfs? IIRC, the format is
> really clean, it already does compression, and is terse enough to be efficent
> for booting purposes. However, it might be too terse as it:
> 1) Doesn't support hard links
> 2) Doesn't store atime/mtime/ctime
>
> I don't know if that'd be too restrictive for an initrd replacement, but
> having only one compressed-filesystemish filesystem for the kernel would be
> nice.
>

You don't want to use the cramfs format. It does a lot of things wrong
for this application (such as block compression.)

        -hpa

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