From: Volkan YAZICI <yazicivo@ttmail.com>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] Multiple Qemu Instances
Date: Mon, 20 Oct 2008 15:36:19 +0300 [thread overview]
Message-ID: <87od1fe94s.fsf@alamut.mobiliz.com.tr> (raw)
Hi,
While trying to run two qemu instances on a single server with a single
NIC, I'm having network related problems. When I start the second qemu
instance, ping'ing both servers concurrently works like below:
ping 192.168.1.11 ping 192.168.1.14
------------------------------- -------------------------------
10 packets transmitted. Waking up...
Packets get started to lost. 10 packets transmitted. (No loss.)
10 packets transmitted. (No loss.) Packets get started to lost.
Packets get started to lost. 10 packets transmitted. (No loss.)
10 packets transmitted. (No loss.) Packets get started to lost.
Packets get started to lost. 10 packets transmitted. (No loss.)
10 packets transmitted. (No loss.) Packets get started to lost.
... ...
Related configurations are listed below.
$ ifconfig -a
br0 Link encap:Ethernet HWaddr 00:1A:64:C1:94:3C
inet addr:192.168.1.10 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::21a:64ff:fec1:943c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:57580386 errors:0 dropped:0 overruns:0 frame:0
TX packets:50256481 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:7292961440 (6.7 GiB) TX bytes:28958593591 (26.9 GiB)
eth0 Link encap:Ethernet HWaddr 00:1A:64:C1:94:3C
inet6 addr: fe80::21a:64ff:fec1:943c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:545421613 errors:0 dropped:0 overruns:0 frame:0
TX packets:508159417 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:518992547535 (483.3 GiB) TX bytes:386017012654 (359.5 GiB)
Interrupt:106 Memory:ce000000-ce011100
tap0 Link encap:Ethernet HWaddr 82:CE:FE:4D:9F:24
inet6 addr: fe80::80ce:feff:fe4d:9f24/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:74724106 errors:0 dropped:0 overruns:0 frame:0
TX packets:112203767 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:8410033346 (7.8 GiB) TX bytes:151553233037 (141.1 GiB)
tap1 Link encap:Ethernet HWaddr A6:29:D5:36:3D:2E
inet6 addr: fe80::a429:d5ff:fe36:3d2e/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:139 errors:0 dropped:0 overruns:0 frame:0
TX packets:388 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:66530 (64.9 KiB) TX bytes:123439 (120.5 KiB)
$ cat /etc/qemu-ifup
#!/bin/sh
IFACE=$1
/sbin/ifconfig $IFACE 0.0.0.0 promisc up
/usr/sbin/brctl addif br0 $IFACE
$ cat /etc/qemu-ifdown
#!/bin/sh
IFACE=$1
/sbin/ifconfig $IFACE 0.0.0.0 promisc down
/usr/sbin/brctl delif br0 $IFACE
I start qemu using a command similar to below
/usr/local/bin/qemu-system-x86_64 ... -net nic -net tap
Does anybody have an idea about what might be causing the problem? How
can I deploy two qemu instances sharing physically same NICs?
Regards.
next reply other threads:[~2008-10-20 12:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-20 12:36 Volkan YAZICI [this message]
2008-10-20 12:44 ` [Qemu-devel] Multiple Qemu Instances Paul Brook
2008-10-20 12:46 ` Laurent Vivier
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