Re: Mystery of file systems
From: John Thompson (john_at_starfleet.os2.dhs.org)
Date: 07/07/05
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Date: Thu, 07 Jul 2005 19:05:08 GMT
["Followup-To:" header set to comp.os.linux.misc.]
On 2005-07-07, x <cupidisdangerous@hotmail.com> wrote:
> I am a beginner of linux os. I have a question regarding the file
> systems. In my understanding linux operates on ext3/ext2 type of file
> system more like windows operate on fat or ntfs file systems. Where as
> I have read at some place that /proc is also a file system, as far as
> my understanding goes /proc is a mount point, how can it be a file
> system.
The filesystem refers to the way data is arraged and managed on the
device; the mount point is simply where you want that data to appear in
your directory tree. In Windows, mount points are assigned by the system,
e.g. "C:" or "A:" and in general are not configurable by the user. In
linux, you can mount any filesystem anyplace in your directory hierarchy.
/proc is actually a pseudo-filesystem, in that it does not reside on a
physical device but rather is an abstraction of the information in the
linux kernel. It is presented in a manner analogous to a filesystem to
simplify the manner in which this information can be accessed and
manipulated.
> Similarly I happen to see a unix system (Octane 2) which
> described /ext as a file system more over it also described dks07ds02
> (or something like this) as a file system.
Your Octane is likely running Irix, which uses the xfs filesystem as its
default filesystem. /ext is probably a mount point, while dks07ds02 is the
actual device (analogous to /dev/sdx in linux).
HTH...
-- -John (john@os2.dhs.org)
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