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From: "Grant Peel" <gpeel@thenetnow.com>
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Date: Sun, 4 Mar 2007 05:01:21 -0500
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Subject: Cloning a disk -large to small
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Hi all,

I have been researching the use of 'dd' quite a bit lately as I have had =
to clone a newly setup server.

The clones are done, and everything seems to be working fine.=20

I was wondering though, if one had a newly setup disk on a  74 GB SCSI =
dirve, is there some know turning that can be done to clone it to a =
smaller drive? Say 36 GB?

Of course I ask the questing with the caveat that one of the file =
systems final size (on the 36 GB disk) would of course have to suffer.

So lets say we had a brand new freebsd setup on a 74 G disk

        swap        2GB
/        ufs         2 GB
/usr    ufs        5 GB
/var    ufs        5 GB
/home    ufs    60 GB

and wanted to copy it using 'dd' to a 36 GIG drive, even though there =
obviously would not be enough room for /home to be the original size? =
Can 'dd' be set to truncate a fs? Can the (/home) filesystem geometry be =
corrected after a regular 'dd' to the new drive?

-Grant