[Udpcast] UDPCast SuSe 7.3 Boot Disk

Mike McCall mccall at rrdo.rrps.k12.nm.us
Mon Jan 27 17:59:58 CET 2003


Hello,

I just want to first applaud the brilliance of UDPCast and its author.  This
has been by far the most efficient and successful tool for cloning a large
number of computers at once I have ever encountered.  Thank you for making
this tool freely available for the world.  However, I am having a
problem....The SuSe 7.3 boot disk is giving me problems on some of our
computers - see
http://www.udpcast.linux.lu/pipermail/udpcast/2002/000008.html for an exact
reference of my problem.  We are running a lab of Gateway E-4000 machines
with 1.8GHz Pentium 4 processors, 60GB hard drives, and 256Mb RAM.  The
Ethernet cards on these machines are Intel Pro/100 VE onboard NICs.  

Here's what I have discovered:  If you hit control-C before Linux boots from
the CD, you get a boot prompt.  If you type "Linux disableapic" then the CD
will bypass the error above.  Everything looks okay, but when I try loading
the e100 NIC driver (which I have had success with for other Pro/100 VE
cards), I get an error that the module could not be loaded.  I have tried
all of the other Intel NIC drivers that are available, and nothing works.  I
have even tried having the kernel probe for the card an still nothing.  Is
there another way to get the NIC driver to load on these machines?  By
disabling APIC, am I inadvertently disabling the NIC?

I have already gotten UDPCast to work using another boot disk (found here:
http://www.phenix.bnl.gov/~purschke/RescueCD/) and a statically compiled
binary of UDPCast, which detects the NIC as an eepro100 (and yes, I have
tried this driver using the UDPCast boot CD.)  However the process is clunky
and not intuitive enough for others with less Linux experience than I have,
which isn't that much!  Can you please, please, please guide me to a
solution!  I love the simplicity of the pre-built UDPCast CD, and would love
to be able to use it on these problematic machines!!  Thanks for your time.

Sincerely,

Mike McCall
Computer Technician
Rio Rancho Public Schools



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Hello, I'm writing because I've run into my first
quandry with UDP Cast.  So far I've had great luck
with this software.  I've successfully reimaged
several labs worth of PCs.

Here's my deal now.  In our network, (I'm trying to
get what our network guy said right)  we have a number
of subnets.  I.e. 192.168.0-10.X

Our router equipment allows for multicast, however the
broadcast discovery packets are killed.  So, it seems
that I'm not able to image a machine on say
192.168.6.X subnet from 192.168.7.X subnet.

Am I just missing an option, or is it possible to
specify an IP address that the clients can listen to,
or possibly a way to specify a list of IPs to include
in the multicast offer?

I've tried the TTL option, but it is at the router
level that a broadcast offer is killed.

-Peter


and


O.K.  I'm on a roll here today.  One more question.

I'm looking at creating a FreeBSD utility CD that
includes the udpcast program.

I try to build the software on FreeBSD, but it fails.
It seems that udpcast uses getopt.h instead of
unistd.h for handling the command line options.

I am not a programmer, much less a C programmer.  Is
this likely to be the only issue with other *nix style
operating systems?  Was there much magic in porting to
Cygwin?  Cygwin seems to try to duplicate the Linux
included headers like getopt.h.  I think this may be a
GNU thing which would mean that support for other
*nixes may be as easy as porting the getopt.h stuff to
unistd.h.

The options that these two support are very very
similar, however I wasn't able to get it to build.
This may be a function of my programming ineptitude.

Thanks again for this really great utility.  UDP Cast
has saved me loads of time since I started using it
only a month ago.

-Peter


Thanks a million.   I've also got a tip for creating compressed system
images:

Zero out the harddrive before installing the OS and other software on the
machine from which the snapshot will be taken.  This will make sure the
disk is blank.  When you are compressing the image, those zeros scrunch
down pretty small!  IBM has a tool for zeroing the harddisk called
wipe(http://service.boulder.ibm.com/storage/hddtech/wipe.exe).  Otherwise,
booting from a Linux / Unix floppy and doing a 'dd if=/dev/zero
of=/dev/hdX' will do it too.

##########################################################
Peter W. Schmiedeskamp    |         "Outlook not so good"
Information Systems              |         The Magic 8-ball knows all!
(406)329-3593                         |         Next I'll ask it about
exchange server
##########################################################




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