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Re: SEUL: Partitioning

Thomas Molesworth wrote:
> On Mon, 30 Jun 1997, Jay Bloodworth wrote:
> > How big of a performance hit do you take going through a loopback device?
> > I haven't looked at the code, but I assume every io syscall requires two
> > trips through the VFS layer: one for the initial call and one to perform
> > the operation on the underlying file system.
> The file is fixed in size+position, so it can be treated exactly like a
> partition on the drive - this may require some kernel changes, but they
> should be minor. I have never personally tried loopback, so I'll give it a
> go tonight (I saw it when kernel v2.0 came out, thought "Cool!" and forgot
> about it). I would not have thought the extra VFS step would cause too much
> of a performance hit, but I will try it and report the findings later. I use
> NFS over ethernet and find it fast enough.

Forgive my ignorance, for I ask out of ignorance, but I was wondering
what would happen to the ext2 virtual-filesystem when the user ran
Defrag under DOS or Win95?

Michael J. Peck
Hewlett-Packard, Convex Division
Opinions expressed above are not necessarily those of my employer.
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