[OpenAFS-devel] Adding an "estimate" function to vlserver

[Mitch Collinsworth]

On Fri, 4 Apr 2003, Love wrote:

> Mitch Collinsworth <mitch@ccmr.cornell.edu> writes:
>
> > On Thu, 3 Apr 2003, Love wrote:
> >
> >> Mitch Collinsworth <mitch@ccmr.cornell.edu> writes:
> >>
> >> > We could also just take the size from vos
> >> > examine, but some quick experiments with this showed inacuracies as
> >> > large as 4%, which we feel is unacceptable.
> >>
> >> In what direction was it wrong ?
> >
> > Not consistent.  (!)
>
> You looked at the same volume clone (backup) ? You are sure the you just
> did have the quota bug triggered volumes confusing you ?

Yes, we compared vos exam of the backup volume .vs. a vos dump of the
backup volume.  I'm afraid I don't know what the quota bug is.


> >> Did you the overhead of file/directory-metadata stored in the dump (number
> >> of files are stored in volintInfo.files)
> >
> > The inaccuracy I'm talking about here is just the difference observed
> > between the size shown in vos examine and the actual true size of a
> > vos dump.  Our estimator utility gets it exactly right every time, by
> > looking at the actual metadata stored in the volume.
>
> I don't think the dump should be smaller the the quota information, if it
> is, something else is wrong.

Ok.  I'll agree with that.

-Mitch