Phillip Susi <[EMAIL PROTECTED]> wrote: > > As cpio does not offer a -H newc format, let me asume that you are talking > > > > about the -c or -H crc format... > > > > Yes, it does have a newc format, see the info page. It is also the > format used by the linux kernel for initramfs images.
A quick look into the cpio source http://cvs.opensolaris.org/source/xref/on/usr/src/cmd/cpio/cpio.c#1216 verifies that there is no such format in cpio. Maybe you are not talking about cpio but about one of many cpio clones..... > > du only counts the file contend and a part of the meta data (not counting > > e.g. > > the "inode" - see: /usr/include/sys/fs/ufs_inode.h) > > > > Right, but the timestamps, owner, and mode only take up a handful of > bytes, which cpio also stores. The cpio archive format -Hcrc never has become a standard and the POSIX cpio format has been declared obsolete 5 years ago because it it not extensible. Less useful formats may have less overhead but this is an inferior argument if you have to decide for a portable and extensible format. The POSIX cpio format is e.g. limited to 8 GB files and the SVr4 crc format is limiet to even less. If you like to have an archive format that completely fits your actual needs, you will end up wit > 100 incompatible archive formats. > > If you compress the result, the remaining difference is less than 1%. > > I'd say archiving my Maildir is a rather real world use, so this is > somewhat relevant. I did notice though, that once compressed, the > difference in size is greatly diminished. See above. Jörg -- EMail:[EMAIL PROTECTED] (home) Jörg Schilling D-13353 Berlin [EMAIL PROTECTED] (uni) [EMAIL PROTECTED] (work) Blog: http://schily.blogspot.com/ URL: http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily _______________________________________________ Bug-tar mailing list [email protected] http://lists.gnu.org/mailman/listinfo/bug-tar
