Online resizing of ext3 filesystems {shrink}

[Gregory Maxwell]

On 1/10/06, Bill Rugolsky Jr. <brugolsky at telemetry-investments.com> wrote:
> On Tue, Jan 10, 2006 at 03:05:48PM -0500, Gregory Maxwell wrote:
> > On 1/9/06, goemon at anime.net <goemon at anime.net> wrote:
> > > Is ext2/3 the only filesystem which does this? There are good reasons to
> > > try to keep allocations toward the beginning of the partition, because i/o
> > > rates are _much_ higher (2x, 3x or more) due to higher angular velocity
> > > of the drive platters.
> Greg,
> I think that you replied (privately) to the wrong person. :-)  You are
> correct, drives are divided into zones.  There's a program bundled
> with bonnie++ called "zcav" that will measure the I/O rate discrepancies.
> It should be saw-tooth, since the gaps grow until a new block can be
> inserted.

Thanks! Just shows that even if you're right ... through the use of a
webmail frontend you can still be a moron. :)