[huskerlug] Re: Fragmentation in FAT/FAT32/NTFS , Ext2/3, and Mac hfs/hfs+,etc.

  • From: Jim Worrest <jworrest@xxxxxxxxxxxxxxxx>
  • To: huskerlug@xxxxxxxxxxxxx
  • Date: Tue, 26 Dec 2006 08:32:20 -0600

        Even Windows XP has a defrag program. :-)
What I understand is that Linux defrags whenever it gets
the chance -- as long as there is enough free space on
the had drive.  The XFS system while good is not that
common in Linux.  There seems to be an ongoing discussion in
FreeBSD to implement some type of Journaling system. To be
fair to the M$ I don't think I ever had a BSOD because of
file system failure, though I had my share of them for
other reasons. :-(  ---Jim

Patrick wrote:
> The major reason that there are software system
> failures in Microsoft and Macintosh Operating systems,
> giving a BSOD or dropping to the BSD shell, is the
> filesystems.
> 
> If you run Microsoft filesystems, you WILL experience
> fragmentation.
> 
> If you run Mac OS X and use HFS or HFS+, you WILL
> experience the BSD shell 'black screen'!
> 
> This applies to USB devices, also!
> 
> Why the failures?  I have read that the
> GNU/Linux,*BSD, and Unix filesystems write from the
> center of the drive space, and plan the layout.
> 
>   All the systems that experience failures seem to
> write from the beginning of the drive, have no
> in-process planning, dumping data wherever there is
> some 'open' space.
> 
> I wondered and pondered that the Journalized
> filesystems helped to keep it all clean, also!
> 
> Source:  
> Journalized Filesystems  -
> http://www.altlinux.com/?module=seminar&part=196
> 
> Fragmentation and testing -
> http://trends.newsforge.com/trends/06/07/21/192241.shtml?tid=138&tid=18
> 
> "The first filesystem was XFS, which showed clear
> color lines with small amounts of fragmentation
> visible as the files moved around the disk in the
> highly accelerated animation. The other filesystem he
> showed was NTFS, which resembled static as you might
> see on a television that is not receiving signal, as
> the filesystem allocated blocks wherever it could find
> room without much apparent planning."
> 
> 
>  
> 
> --
> P. Berry, USAF (Retired) http://www.af.mil  Linux User #65411 
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