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RE: new to parted

From: VomLehn, David
Subject: RE: new to parted
Date: Tue, 16 Jan 2007 19:12:35 -0800

Hmm. It would be good to know what the partition table mathematics parted uses 
actually are. I'm dealing with a system that creates its own partition table 
(I'm not quite sure how) and parted refuses to deal with them because the 
partitions are not aligned on cylinder boundaries. I see three options:

1. Drop parted and come up with some kludge to wrap around, for example, fdisk.
2. Learn parted partition table mathematics and see if I can get those adopted 
by who writes the software to create partitions
3. Teach parted to handle unaligned partitions.

In general, number 3 would be my perference because it helps out other people 
with my issue, too, but I doubt I have enough time to do that. Number 2 is 
easier but runs into trying to get others to change existing software. Number 1 
is the least desirable and it may not even be possible to do what needs to be 
done this way.

Anyone have any perspective on this? Of course, I'm on a very tight deadline 
and need to decide which way to go almost immediately...

David VomLehn, Staff O/S Software Engineer
Scientific Atlanta, A Cisco Company
10590 N. Tantau Avenue, Cupertino, CA 95014
voice: 408-777-5052 fax: 408-777-0176

> -----Original Message-----
> From: address@hidden
> [mailto:address@hidden
> On Behalf Of address@hidden
> Sent: Sunday, January 14, 2007 11:51 AM
> To: François Patte
> Cc: address@hidden
> Subject: Re: new to parted
> Dear François,
> On Fri, Jan 12, 2007 at 07:29:08PM +0100, François Patte wrote:
> > Why 8 ends at 15304,108 and 9 begins at 15304,140? 0,031 is missing!
> Parted automatically aligns partitions based on what it
> thinks is best (or, rather, necessary).  The mathematics of
> partition tables are sometimes strange ones.  Be sure that
> it's for your own good :)
> > can I add 5000 to 15304,108 to add 5GB to sda8? Or is it more
> > complicated to calculate?
> The 'unit' command will tell you which unit is currently in
> use.  You can always suffix numbers with a unit to tell
> parted what you mean.
>   If you have any more questions, please ask.
>     Leslie
> --
> gpg --keyserver pgp.mit.edu --recv-keys DD4EBF83
> http://nic-nac-project.de/~skypher/

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