[huskerlug] Re: Fragmentation in FAT/FAT32/NTFS , Ext2/3, and Mac hfs/hfs+,etc.
- From: Patrick <pberry26@xxxxxxxxx>
- To: huskerlug@xxxxxxxxxxxxx
- Date: Tue, 26 Dec 2006 18:56:33 -0800 (PST)
Let me repeat what I have found as far as
fragmentation in GNU/Linux EXT2/3. The system writes
from the center outward, and the nodes are checked on
a time schedule , and, stability is assured and no
fragmentation occurs due to the planning the
filesystem performs upon writing to the drive. This
was also said to be true for XFS in Unix, and BSD.
I hope that clears it up for you... I did give some
references, I hope... If not, I will search and
collect and bring them here...
--- Jim Worrest <jworrest@xxxxxxxxxxxxxxxx> wrote:
> 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 http://lugww.counter.li.org
> http://knopper.net/knoppix http://distrowatch.com
> http://livecdlist.com http://sourceforge.net
> > http://yolinux.com http://safeharbordome.com
> http://minidome.net
> >
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--
P. Berry, USAF (Retired) http://www.af.mil Linux User #65411
http://lugww.counter.li.org http://knopper.net/knoppix http://distrowatch.com
http://livecdlist.com http://sourceforge.net
http://yolinux.com http://safeharbordome.com http://minidome.net
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Other related posts:
- » [huskerlug] Fragmentation in FAT/FAT32/NTFS , Ext2/3, and Mac hfs/hfs+,etc.
- » [huskerlug] Re: Fragmentation in FAT/FAT32/NTFS , Ext2/3, and Mac hfs/hfs+,etc.
- » [huskerlug] Re: Fragmentation in FAT/FAT32/NTFS , Ext2/3, and Mac hfs/hfs+,etc.
- » [huskerlug] Re: Fragmentation in FAT/FAT32/NTFS , Ext2/3, and Mac hfs/hfs+,etc.
