I've looked in the archives and not seen (ot at least, not recognised)
anything relevant, and I'm sure this problem is *obvious* to those in
the know, but it is foxing me.
I connect to my server using ssh usingf putty from a Windows box. When
I start a UML machine I use the following:
linux ubd0=Debian-3.0r2.ext2 ubd3=swapfs ssl=null con0=fd:0,fd:1 \
umid=debbie-01 \
con=pts root=/dev/ubd0 \
eth0=tuntap,,,172.20.20.59
That's OK, but it doesn't give the ssh session back! I'm assuming that
this is because of the "con0=fd:0,fd:1" above. No problems, I just
start another ssh session to the "host" and use "screen" to access the
vc I desire through the /dev/pts/x device.
When I 'who' on the host it shows pts/0 for the original host session
and on the client once started it shows ttyx, depending on the pts
device I chose.
Ideally I'd like the ssh session back so that I could start more UML
sessions. But primarily I think I need a better understanding of what
all these darn pts, tty, con and ptys are, so my first request is for
some reference that explains the meaning and inter-relationships of
all these things. I've looked at the "Setting up serial lines and
consoles" page, and tried to understand it and will continue to do
so, but I haven't yet grasped it. Does anyone known of a tutorial or
something that describes these Linux devices in a way that novice can
understand. Anything would do, even if written at a 7-year old's
reading level. Pretty pictures would be good too! <grin>.
I have of course, experimented. If I do anything to the
"con0=fd:0,fd:1" bit above the console session on the ssh (putty)
session just hangs without producing a list of vcs. As you might
expect. And I cannot then access the UML machine and have to kill it.
Ideally I'd like to kick off, one, two, three, four, UML machines, and
get back the ssh session and be able to access the UML machines via
screen. Is this unreasonable? <grin>
Cheers and thanks,
Cliff
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