Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!gatech!bloom-beacon!husc6!cmcl2!brl-adm!umd5!cvl!mimsy!chris From: chris@mimsy.UUCP (Chris Torek) Newsgroups: comp.unix.wizards Subject: Re: Disk Fragmentation Message-ID: <7674@mimsy.UUCP> Date: Fri, 24-Jul-87 09:47:52 EDT Article-I.D.: mimsy.7674 Posted: Fri Jul 24 09:47:52 1987 Date-Received: Sat, 25-Jul-87 15:04:08 EDT References: <8441@brl-adm.ARPA> Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742 Lines: 20 In article <8441@brl-adm.ARPA> eichelbe@nadc.arpa (J. Eichelberger) writes: >Is there a disk defragmenter utility for 4.3 BSD UNIX on VAXes? >That is, a utility to move files around on the disk so that they are >less fragmented (more contiguous) and larger free space areas exist on >the disk. Yes. It is called `cp'. (!) All you need is enough empty space; blocks are allocated `optimally' as long as there is an optimally placed block. The block allocation routines seem to work off state encoded in the in-core superblock and cylinder group summaries, so I think this works best if you are the only one doing file activity. A dump-and-restore would work, but you could also just use tar to copy a directory tree while the machine is otherwise idle. -- In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7690) Domain: chris@mimsy.umd.edu Path: seismo!mimsy!chris