|using mclone for mass cloning webconverger workstations||koenr||2/9/12 11:54 AM|
We use webconverger as OS at the moment on 24 computers in several
classrooms. The OS is installed on a small harddisk. We change the
boot parameters without a complete build, following the instructions
on http://webconverger.org/develop/. We dump the isohybrid on a
harddisks using dd.
We were looking into an easier way to upgrade all the workstations to
a newer Webconverger version and came accross Trinity Rescue Kit. This
creates from a bootable CD-ROM an easy netboot server. Using the
mclone tool in the Kit, you can dd harddisks over the network on other
workstations using multicasting (takes about 35 seconds, whatever the
number of workstations).
Sounds all really cool, except that the cloned workstations at first
didn't boot. We noticed that parted doesn't like the iso-hybrid
partition either, so searched the problem in the direction of the iso-
hybrid partition Webconverger resides on.
After some research, we found that you should make the iso bootable
with the -offset 1 option of isohybrid, e.g.
isohybrid -offset 1 custom.iso
It might be good to add something about this to the documentation. It
can also stay here to google up for future reference. I have no idea
if more people want to keep a large amount of Webconvergers up to
Thanks a lot for this great piece of software!
|Re: [webc] using mclone for mass cloning webconverger workstations||Kai Hendry||2/9/12 5:44 PM|
Wow, thanks for writing in Koen. That sounds really really awesome.
So are are your terminals configured to boot PXE by default?
So I guess you don't put your netboot upgrade server online on your
It would be great if you could document the whole setup (with photos
So I'm planning to add some persistence layer in USB images and use
Thank you for writing in,
|Re: using mclone for mass cloning webconverger workstations||koenr||2/10/12 12:25 AM|
No, we just change the boot order during upgrade
>Yes. The netboot upgrade server is nothing more then a CD to boot from
- really convenient. We are thinking of booting over the network for a
screen cast system, since the screens can end up on difficult to
access places (with ladders and stuff ;-) ), but that is for much
later - the backend still has to be build.
I registered in the wiki
I like the save approach for the upgrade process. Would be a great
|Re: [webc] Re: using mclone for mass cloning webconverger workstations||Guttorm Flatabø||2/10/12 3:07 AM|
On Fri, Feb 10, 2012 at 9:25 AM, koenr <koen.ro...@gmail.com> wrote:
As far as I can remember, you can build debian live (and hence Webconverger) for netbooting, or it's a boot option of a kind where you can have your image boot from a simple http:// location.
I tried it with slitaz, I think.
|Re: [webc] Re: using mclone for mass cloning webconverger workstations||Kai Hendry||2/10/12 3:47 PM|
On 10 February 2012 16:25, koenr <koen.ro...@gmail.com> wrote:
Ok, you should have admin rights. Sorry for the delay here.
May I suggest http://webconverger.org/pxenetboot ?
People do ask for netboot customisations, but traditional netboot
Oh btw, did you have to do some special tweaking to enable multicasting?
> I like the save approach for the upgrade process. Would be a great
Not sure what you mean by the "save" approach, do you mean "safe"? :)
|Re: [webc] Re: using mclone for mass cloning webconverger workstations||Kai Hendry||2/10/12 4:00 PM|
2012/2/10 Guttorm Flatabø <po...@guttormflatabo.com>:
I've forgotten about this almost, but yes you could have a netboot