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DateTue, 15 Jan 2002 19:33:24 -0800
From"H. Peter Anvin" <>
SubjectRe: initramfs buffer spec -- second draft
Andreas Dilger wrote:

>> > Well, a few quick tests show (GNU cpio version 2.4.2), with raw sizes
> in "blocks" as output by cpio, compressed sizes in bytes:
> 
> find <dir> | cpio -o -H <format> | gzip -9 | wc -c
> 
> dir		  bin (default)		newc (proposed)
> 		  raw	   gzip		  raw	   gzip
> /sbin		15121	3289678		12952	2769451
> /etc		 8822	 689517		 8996	 693700
> /usr/local/sbin	 1895	 385461		 1899	 385764
> 
> The binary format reports lots of "truncating inode number", but for
> the purpose of initramfs, that is not an issue as we don't anticipate
> more than 64k files.  I don't know why the /sbin test is so heavily
> in favour of the newc (ASCII) format, but I repeated it to confirm
> the numbers.
> 


Probably because it does hard links.

	-hpa


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