Hello On Tue, 02 Feb 2010 05:35:28 -0600 Vijay Sankar <[email protected]> wrote:
> Matthias Pfeifer wrote: > > Hello list > > > > I am trying to get multiple qemu guests on > > host machine running. Host and guests are running > > openbsd 4.6 in sync with the patch brunch. > > > > The Host IP is: 192.168.102.110 > > The guest should have: 192.168.102.111, 192.168.102.112 .. > > and so on. All in the same network, using the same DNS server > > and gateway. > > > > I have read /usr/local/share/doc/qemu/README.OpenBSD > > and tried the samples in the tap section. This works > > fine for one host. > > > > For example, this is working well for one host: > > > > ifconfig tun0 link0 > > ifconfig bridge0 create > > brconfig bridge0 add tun0 add rl0 up > > > > qemu -net nic,macaddr=52:54:00:12:35:10 \ > > -net tap,fd=3 \ > > -name Host1 \ > > -no-fd-bootchk \ > > -hda Host1/system.img 3<>/dev/tun0 > > > > > > Then, I'd like to doing this: > > > > ifconfig tun1 link0 > > ifconfig bridge1 create > > brconfig bridge1 add tun1 add rl0 up > > > > qemu -net nic,macaddr=52:54:00:12:35:11 \ ## MAC changed > > -net tap,fd=4 \ ## fd changed > > -name Host1 \ > > -no-fd-bootchk \ > > -hda Host2/system.img 4<>/dev/tun1 ## tun interface changed > > > > > > But this fails. Is there a way to do something like this > > without adding a real NIC? > > > > > > Thanks in advance! > > > > Matthias > > > > NOTE: sudo calls closefrom(2). In order to have more than one fd passed > tap interface, a line to sudoers akin to: > > Defaults closefrom_override > > then calling sudo via 'sudo -C 5 -u $USER qemu ..' is required. > See sudoers(5) and sudo(8) for details. > > -- > Vijay Sankar, M.Eng., P.Eng. > ForeTell Technologies Limited > 59 Flamingo Avenue, Winnipeg, MB, Canada R3J 0X6 > Phone: (204) 885-9535, E-Mail: [email protected] > I have added "Defaults closefrom_override" to /etc/sudoers. So i am using the tun0 for the second qemu host: sudo sh -c " sudo -C 5 -u qemu qemu -net nic,macaddr=52:54:00:12:35:10 \ -net tap,fd=3 -name DSB -no-fd-bootchk -hda host1/system.img 3<>/dev/tun0" Working fine. Then the second: sudo sh -c " sudo -C 5 -u qemu qemu -net nic,macaddr=52:54:00:12:35:10 \ -net tap,fd=4 -name DSB -no-fd-bootchk -hda host1/system.img 4<>/dev/tun0" this gives me a " cannot create /dev/tun0: Device busy "
