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Matt Van Mater schrieb:
<blockquote
cite="mid:CACeGjstE6Epmad8tOyUOnL6LWO6xNnRHAtdUSXPEkOqR5ZKisA@mail.gmail.com"
type="cite">Let me restate my last email regarding rdiff:<br>
<br>
All of my image files are from the same Windows XP VM, created
using FOG/partimage. Image1 is the "baseline", Image2 is Image1 +
the WinSCP binary downloaded (not even installed).<br>
</blockquote>
<br>
Use your virtualisation to create the difference / snapshot, and
transfer what your virtualisation spits out in the diff disk image,
and the let it merge on the target.<br>
How well that works depends on the bitchiness of your virtualisation
*g*.<br>
<br>
Good luck!<br>
<br>
Joachim Otahal<br>
<br>
<blockquote
cite="mid:CACeGjstE6Epmad8tOyUOnL6LWO6xNnRHAtdUSXPEkOqR5ZKisA@mail.gmail.com"
type="cite">
<br>
I am not imaging an Ubuntu machine. I am using the Ubuntu machine
as a means of creating the batch file for rsync and/or rdiff. I
chose that platform since it is a common distribution used by many
and would be easy for others to reproduce my problem.<br>
<br>
I agree the 400 MB still looks big, but no the ONLY intentional
difference between image1 and image2 is the 2.9 MB WinSCP binary i
downloaded. My guess is the difference is 1) due partially to the
default block size rdiff uses (512b?) AND 2) the fact that the
Windows XP VM image source only had 256 MB RAM and that by default
Windows XP creates a pagefile of 1.5 x RAM size = 384 MB. That is
close enough to 400 MB for me.<br>
<br>
I am currently running rdiff with a smaller blocksize to test #1
above, hopefully that will force the delta to get smaller (at the
expense of longer computation time).<br>
<br>
Matt<br>
<br>
<div class="gmail_quote">On Tue, Mar 20, 2012 at 3:41 PM, Joachim
Otahal (privat) <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:Jou@gmx.net">Jou@gmx.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Matt Van
Mater schrieb:
<div class="im"><br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Alternate assessment - I ran a similar comparison against
the two image files using rdiff that comes with Ubuntu
10.04.4 LTS (shown up as librsync 0.9.7) and have a
significantly smaller delta file (closer to what i
expect).<br>
</blockquote>
<br>
</div>
Just plain luck. If ubuntu wrote the most new files close to
the last used blocks and only changes a few bytes (this time
literally) in the middle then the desync happens later. The
400 MB delta still looks big, or did you install something big
like libreoffice?<br>
<br>
regards,<br>
<br>
Joachim Otahal<br>
<br>
</blockquote>
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