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Re: [K12OSN] rsync K12LTSP against RH9?

UPRADING from 3.1.0 to 3.1.1

This reply is a bit late for this thread, but not for me.

I am currently rsync'ing for the first time, after renaming the 3.1.0 ISO to 3.1.1 and even noticing the minor name change to the source and extra's CD.

It appears the whole first ISO is being downloaded a roughly 260kB/s, one of the fastest figures I've seen yet (I just moved near a CO and enjoy the better DSL bandwidth)

I though that only the newest part of the iso would be downloaded, not the whole thing. I confirmed the MD5 fingerprints before starting, and they matched. What is happening?

The third ISO is going at 970+kB/s! Does that mean it is only comparing and not transferring data?

If anyone can be of some assistance to a newbie rsync'er, I'd be grateful!

Thank you!

John Q. Public

On Saturday, May 24, 2003, at 08:06 AM, Eric Harrison wrote:

On 24 May 2003, Gavin Chester wrote:

On Sat, 2003-05-24 at 14:41, James Jensen wrote:
-- Gavin Chester <sales ecosolutions com au> wrote:

In which case I
want to be
able to rsync only the changed *parts* of an iso to save time on a slow


Fantastic answer - though the news is bad!! Thanks James for making that
explicit, though I also don't know why rsync behaved differently one time.

*shrug*, the only thing that comes to mind is that you pointed to the
wrong module (such as rsync k12linux.mesd.k12.or.us::updates) or that
you happened to run rsync when I had the ISO images mounted on loopback -
whenever I do that I mount them outside the ftp/www root, but it is
plausible that I mounted them where rsync could see them.

Now, I return to an associated question I appended to my
very first post - that is, for poor suckers like me that suffer on a
(measured) 4.4kb/sec dial-up:

(quote myself) If rsync is doing the whole iso after you
change it, can there be a way to rysnc a directory on your server
instead and then make my own iso (mkisofs ??) this end?
(end quote)

Can anyone describe to me how I can do the download part of this

It really doesn't make too much difference between copying the straight files and using rsync to update the images. A typical update will have 100-200M difference within the 1.9G of ISOs. Rsync only copies over the difference.

If you want to download the individual files, the pre-released are
available via apt or yum. Or you can download them by hand, they are
at ftp://k12linux.mesd.k12.or.us/apt/9/

After v3.1.0 goes gold, they will be available via RHN.

Are there security risks for the server dishing up the files that way
and hence it's not likely to be allowed?

The reason I post links to the ISOs, and only the ISOs, is that much of what needs to be tested is the installer. Downloading the individual packages does not test the installer ;-)

Should I use ssh for security - and how would I do that?

You can do rsync over ssh, if you have an account on the remote machine.

In the case of a public rsync server, you don't need ssh.

BTW: It took me around TWO WEEKS to rsync the last three iso files, so
any way to overcome this is very, very welcome!!

Lets see 1.9G's worth of ISOs is 1,992,294Kb. At 4.4Kb/s, that works to 452,794 seconds = 5.25 days.

Sounds like you did the full download. Make sure that the local copy of
your ISOs are named exactly as they are on the remote server before
running the rsync command.

My DSL line at home will only push at about 30Kb/s and it usually takes
me between 10-30 minutes to run rsync.


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