Grant Edwards <[email protected]> wrote: > On 2012-02-13, Michael Orlitzky <[email protected]> wrote: > > On 02/13/12 05:49, Helmut Jarausch wrote: > >> > >> I've written a small Python program which outputs the file names in > >> i-node order. If this is fed into tar or cpio nearly no seeks are > >> required during copying. > > > > What makes you think the inodes are sequential on-disk? > > Even if the i-nodes are sequential on-disk, there's no reason to think > that the data blocks associated with the inodes are in any particular > order with respect to the i-nodes themselves.
Correct, there is however a really fast method using "star -copy". This works because there are two decoupled processes, shared memory between them and the fact that star reads names from directories in one big chunk. 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/private/ ftp://ftp.berlios.de/pub/schily
