In article <MSGID_7223=3a2300=2f101=40racenet.org_464ee2f7@fidonet.org>, Naota <sean@tcob1.net> wrote: | Originally to: All | | On Tue, 25 Nov 2003 11:53:55 -0800, John C. Linford wrote: | | > Thanks. I'll give that a try, but there could be a problem: The file | > generated by dd are huge, even after gzip. How can I break it apart | > so it will span multiple backup disks? Say 700MB chunks for CDs? | | I'd suggest using the split utility: | | split -b 700m --verbose my_bigass_backup.tar.gz my_bigass_backup.tar.gz | | Rejoin them with cat. | | cat my_biggass_backup.tar.gz.a* > my_bigass_backup.tar.gz As another approach, I split my backups into blocks of a fixed max size. I start with a file holding the filenames and size, and run a perl script I wrote to generate a series of files each of which has names adding up to the max size. It allows adding a fixed overhead per file as well, to allow for overhead in tar, cpio, etc. You can write CDs, DVDs, or tapes as suits your needs. It all started backing up a 20MB 3B1 to 400kb floppies LONG ago. -- bill davidsen <davidsen@tmr.com> CTO, TMR Associates, Inc Doing interesting things with little computers since 1979. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
