Qemu 0.10.50 CAN NOT get ip from dhcp server

I notice that, when i use qemu 0.10.50 (which from kvm-0.87.tar.gz), the guest OS CAN NOT get the ip from dhcp server.
When i use qemu 0.10.0 (which from debian's kvm-0.85 package), the guest OS CAN get the ip from the SAME dhcp server.

Please help, thank you.

My kvm network use bridge mode

My kvm launch script:

#!/bin/sh

NUM="9"
IMG="./openbsd-amd64.qcow2" CDROM="/ntfs2/iso-cdrom/clonezilla-live-1.2.1-39.iso" #CDROM="/kdchome/john/software/install46.iso" #KVM="/usr/bin/kvm" # <--------- 0.10.0 which from debian kvm 0.85 package KVM="/opt/kvm/bin/qemu-system-x86_64 -L /opt/kvm/share/qemu/" # <--------- 0.10.50 which from kvm-0.87.tar.gz source code USERID="$(whoami)"
PID="./pid.log"
iface="$(sudo /usr/sbin/tunctl -t tap${NUM} -b -u ${USERID})"

${KVM} -hda ${IMG} \
-net nic,vlan=${NUM},model=e1000,macaddr=00:AA:BB:CC:DD:0${NUM} \
-net tap,vlan=${NUM},ifname="${iface}",script=/etc/kvm/kvm-ifup,downscript=/etc/kvm/kvm-ifdown \
-localtime \
-usb -usbdevice tablet \
-k en-us -monitor stdio \
-soundhw all \
-cdrom ${CDROM} \
-m 1024 -vga cirrus -boot d $@

sleep 3
sudo /usr/sbin/tunctl -d ${iface}
exit $?

I have noticed the same thing with KVM-87 and either the e1000 or the rtl8139 network models. I am on a 64-bit 2.6.18 RHEL 5.3 kernel with an Intel Q9300 processor.

Even statically assigning an IP to my bridged guest doesn't allow it to communicate with my network.

Specifying virtio as the NIC model allows a Fedora 11 live CD to network properly. KVM-86 allows the same Fedora 11 live CD to network properly regardless of which NIC model I choose.

----- Original Message -----
From: "John Wong" <[email protected]>
To: "KVM list" <[email protected]>
Sent: Sunday, July 5, 2009 10:13:12 PM GMT -05:00 US/Canada Eastern
Subject: Qemu 0.10.50 CAN NOT get ip from dhcp server

I notice that, when i use qemu 0.10.50 (which from kvm-0.87.tar.gz), the guest OS CAN NOT get the ip from dhcp server.
When i use qemu 0.10.0 (which from debian's kvm-0.85 package), the guest OS CAN get the ip from the SAME dhcp server.

Please help, thank you.

My kvm network use bridge mode

My kvm launch script:

#!/bin/sh

NUM="9"
IMG="./openbsd-amd64.qcow2" CDROM="/ntfs2/iso-cdrom/clonezilla-live-1.2.1-39.iso" #CDROM="/kdchome/john/software/install46.iso" #KVM="/usr/bin/kvm" # <--------- 0.10.0 which from debian kvm 0.85 package KVM="/opt/kvm/bin/qemu-system-x86_64 -L /opt/kvm/share/qemu/" # <--------- 0.10.50 which from kvm-0.87.tar.gz source code USERID="$(whoami)"
PID="./pid.log"
iface="$(sudo /usr/sbin/tunctl -t tap${NUM} -b -u ${USERID})"

${KVM} -hda ${IMG} \
-net nic,vlan=${NUM},model=e1000,macaddr=00:AA:BB:CC:DD:0${NUM} \
-net tap,vlan=${NUM},ifname="${iface}",script=/etc/kvm/kvm-ifup,downscript=/etc/kvm/kvm-ifdown \
-localtime \
-usb -usbdevice tablet \
-k en-us -monitor stdio \
-soundhw all \
-cdrom ${CDROM} \
-m 1024 -vga cirrus -boot d $@

sleep 3
sudo /usr/sbin/tunctl -d ${iface}
exit $?

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This was fixed in kvm-88.

Amit

Yes, kvm-88 fixed this problem.

I also notice another problem, when i use kvm-88(qemu-system-x86_64 with kvm-kmod-2.6.30.1-rc2.tar.gz) installing 64bit OS (window7 & debian & netbsd), the install CD show the error message, say this system is 32bit not 64bit and can not continue to install.
I did try use -cpu qemu64 or -cpu core2duo, but no help.

When i use kvm-85 (which from debian's package) with kvm-kmod-2.6.30.1-rc2.tar.gz, i can install 64bit OS.

My host system is(uname -a): Linux Debian 2.6.30-1-amd64 #1 SMP Wed Jul 8 12:20:34 UTC 2009 x86_64 GNU/Linux My cpu is Intel core2duo E8400.

Please help, thank you.

Amit Shah 提到:

Did you run 'make install' after compiling kvm-88?

Amit

Amit Shah 提到:

Yes, i did it.
./configure --prefix=/opt/kvm-88/ --audio-drv-list="alsa oss" make clean
make
sudo make install

Please help, thank you.

Any messages in the host kernel's logs? Also can you try running a 32-bit VM and report what /proc/cpuinfo shows? I'm assuming you're running on a 64 bit host. Can you confirm that?

Amit

Amit Shah 提到:

No, i can not found any message is relate kvm.

Yes, i installed Debian/32-bit VM, below is "cat /proc/cpuinfo".

Thank your help.
--------------------------------------------------------------------
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 2
model name : QEMU Virtual CPU version 0.10.50
stepping : 3
cpu MHz : 2999.638
cache size : 2048 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 pni hypervisor
bogomips : 5999.27
clflush size : 64
power management:

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 2
model name : QEMU Virtual CPU version 0.10.50
stepping : 3
cpu MHz : 2999.638
cache size : 2048 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 pni hypervisor
bogomips : 5999.27
clflush size : 64
power management:
--------------------------------------------------------------------------------------------

Is the host a 64-bit host and are you running a 64 bit kernel on the host?

Amit

Amit Shah 提到:

Yes, the host is Debian/64-bit/kernel-2.6.30.

John Wong 提到: