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From: jsalter@ibmpa.awdpa.ibm.com
Newsgroups: comp.unix.aix,comp.unix.internals
Subject: Re: file fragmentation
Keywords: fragmentation, UNIX
Message-ID: <1991Mar6.211120.25337@ibmpa.awdpa.ibm.com>
Date: 6 Mar 91 21:11:20 GMT
References: <476@bally.Bally.COM> <3412@unisoft.UUCP> <1991Mar6.000156.27641@servalan.uucp>
Sender: news@ibmpa.awdpa.ibm.com (news id)
Reply-To: jsalter@slo.awdpa.ibm.com (Jim Salter)
Distribution: usa
Organization: IBM PSP Development, Palo Alto, CA
Lines: 26

In article <1991Mar6.000156.27641@servalan.uucp> rmtodd@servalan.uucp (Richard Todd) writes:
>On the RISC/6000 flavor of AIX (I
>don't know about the others) they don't use *either* the BSD or SysV types
>of filesystem layout; they use a filesystem layout all their own.

Yep, it's the JFS (Journalling File System) which is supposed to provide a
lot better error handling than either of the others, as well as work with
the LVM (Logical Volume Manager).

>Good luck
>in finding utilities that will spit out statistics about (RISC) AIX 
>filesystems; you'll need it....

lsvg - list volume groups and statistics
lspv - list physical volumes and statistics
lslv - list logical volumes and statistics (this is what you probably want)
df   - lists disk and filesystem information

All shipped with the system; what's so tough about this?

>Richard Todd	rmtodd@uokmax.ecn.uoknor.edu  rmtodd@chinet.chi.il.us
>	rmtodd@servalan.uucp

jim/jsalter  IBM PSP, Palo Alto  T465/(415)855-4427  VNET: JSALTER at AUSVMQ
Internet: jsalter@slo.awdpa.ibm.com         UUCP: ..!uunet!ibmsupt!jsalter 
  PS/2 it, or DIE!  :-)  The ramblings above have nothing to do with Big Blue.