Hi, I tried to connect a UML with the host linux machine through tty and succeed, but then when I tried to boot another UML to play as the slave end, I failed. I hope some of you could give me some guide.
I used the following command line to boot up the first UML (let's say UML1): host# ./linux umid=rh9 ubd0=rh9_cow1,rh9 root=/dev/ubd0 ubd7-swapfs mem=128m eth0=tuntap,,,192.169.1.251 con=pty con0=fd:0,fd:1 con7=tty:/dev/ptyp7 then in UML1: UML1# cat /dev/vc/7 in host: host# (sleep 5; echo hello; sleep 1) > /dev/ttyp7 Everything works fine, I can get the "hello" in UML1's terminal, and then the commanded is finished. But if I try to let another UML (UML2) to play the host's role and booted it using: host# ./linux umid=rh9 ubd0=rh9_cow2,rh9 root=/dev/ubd0 ubd7-swapfs mem=128m eth0=tuntap,,,192.169.1.252 con=pty con0=fd:0,fd:1 con7=tty:/dev/ttyp7 and in UML1 still: UML1# cat /dev/vc/7 then in UML2: UML2# (sleep 5; echo hello; sleep 1) > /dev/ttyp7 I get an error: -bash: /dev/ttyp7: Input/output error What's going on? Where did I make mistakes? I make sure UML1 booted up before UML2, and the ptyp7 was already opened when I try to echo things to its corresponding tty. I appreciate your help!! vilda ------------------------------------------------------- This SF.Net email is sponsored by Oracle Space Sweepstakes Want to be the first software developer in space? Enter now for the Oracle Space Sweepstakes! http://ads.osdn.com/?ad_idt12&alloc_id344&op=click _______________________________________________ User-mode-linux-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
