虚拟机使用user space virtio在高网络流量的情况下，网络中断的bug 已经得到修复
是等官方的正式包出来，才升级。 还是现在安装这个ppa包？ ---------- Forwarded message ---------- From: Metin Akat <[email protected]> Date: 2012/9/3 Subject: [Bug 997978] Re: KVM images lose connectivity with bridged network To: [email protected] @Peng Yong. Yes, you can. There is a package called ppa-purge in the official repositories. Install it. It will allow you to revert to official packages at will. -- You received this bug notification because you are subscribed to the bug report. https://bugs.launchpad.net/bugs/997978 Title: KVM images lose connectivity with bridged network Status in OpenStack Compute (Nova): New Status in “bridge-utils” package in Ubuntu: Invalid Status in “ifenslave” package in Ubuntu: Confirmed Status in “libvirt” package in Ubuntu: Confirmed Status in “linux” package in Ubuntu: Confirmed Status in “qemu-kvm” package in Ubuntu: Confirmed Bug description: System: ----------- Dell R410 Dual processor 2.4Ghz w/16G RAM Distributor ID: Ubuntu Description: Ubuntu 12.04 LTS Release: 12.04 Codename: precise Setup: --------- We're running 3 KVM guests, all Ubuntu 12.04 LTS using bridged networking. From the host: # cat /etc/network/interfaces auto br0 iface br0 inet static address 212.XX.239.98 netmask 255.255.255.240 gateway 212.XX.239.97 bridge_ports eth0 bridge_fd 9 bridge_hello 2 bridge_maxage 12 bridge_stp off # ifconfig eth0 eth0 Link encap:Ethernet HWaddr d4:ae:52:84:2d:5a UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:11278363 errors:0 dropped:3128 overruns:0 frame:0 TX packets:14437384 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4115980743 (4.1 GB) TX bytes:5451961979 (5.4 GB) Interrupt:36 Memory:da000000-da012800 # ifconfig br0 br0 Link encap:Ethernet HWaddr d4:ae:52:84:2d:5a inet addr:212.XX.239.98 Bcast:212.XX.239.111 Mask:255.255.255.240 inet6 addr: fe80::d6ae:52ff:fe84:2d5a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1720861 errors:0 dropped:0 overruns:0 frame:0 TX packets:1708622 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:210152198 (210.1 MB) TX bytes:300858508 (300.8 MB) # brctl show bridge name bridge id STP enabled interfaces br0 8000.d4ae52842d5a no eth0 I have no default network configured to autostart in libvirt as we're using bridged networking: # virsh net-list --all Name State Autostart ----------------------------------------- default inactive no # arp Address HWtype HWaddress Flags Mask Iface mailer03.xxxx.com ether 52:54:00:82:5f:0f C br0 mailer01.xxxx.com ether 52:54:00:d2:f7:31 C br0 mailer02.xxxx.com ether 52:54:00:d3:8f:91 C br0 dxi-gw2.xxxx.com ether 00:1a:30:2a:b1:c0 C br0 From one of the guests: <domain type='kvm' id='4'> <name>mailer01</name> <uuid>d41d1355-84e8-ae23-e84e-227bc0231b97</uuid> <memory>2097152</memory> <currentMemory>2097152</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64' machine='pc-1.0'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/bin/kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/dev/mapper/vg_main-mailer01--root'/> <target dev='hda' bus='ide'/> <alias name='ide0-0-0'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/dev/mapper/vg_main-mailer01--swap'/> <target dev='hdb' bus='ide'/> <alias name='ide0-0-1'/> <address type='drive' controller='0' bus='0' unit='1'/> </disk> <controller type='ide' index='0'> <alias name='ide0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='bridge'> <mac address='52:54:00:d2:f7:31'/> <source bridge='br0'/> <target dev='vnet0'/> <model type='virtio'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <serial type='pty'> <source path='/dev/pts/0'/> <target port='0'/> <alias name='serial0'/> </serial> <console type='pty' tty='/dev/pts/0'> <source path='/dev/pts/0'/> <target type='serial' port='0'/> <alias name='serial0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='5900' autoport='yes' listen='127.0.0.1'> <listen type='address' address='127.0.0.1'/> </graphics> <video> <model type='cirrus' vram='9216' heads='1'/> <alias name='video0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <alias name='balloon0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </memballoon> </devices> <seclabel type='dynamic' model='apparmor' relabel='yes'> <label>libvirt-d41d1355-84e8-ae23-e84e-227bc0231b97</label> <imagelabel>libvirt-d41d1355-84e8-ae23-e84e-227bc0231b97</imagelabel> </seclabel> </domain> From within the guest: # cat /etc/network/interfaces # The primary network interface auto eth0 iface eth0 inet static address 212.XX.239.100 netmask 255.255.255.240 network 212.XX.239.96 broadcast 212.XX.239.111 gateway 212.XX.239.97 # ifconfig eth0 Link encap:Ethernet HWaddr 52:54:00:d2:f7:31 inet addr:212.XX.239.100 Bcast:212.XX.239.111 Mask:255.255.255.240 inet6 addr: fe80::5054:ff:fed2:f731/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5631830 errors:0 dropped:0 overruns:0 frame:0 TX packets:6683416 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2027322829 (2.0 GB) TX bytes:2076698690 (2.0 GB) A commandline which starts the KVM guest: /usr/bin/kvm -S -M pc-1.0 -enable-kvm -m 2048 -smp 1,sockets=1,cores=1,threads=1 -name mailer01 -uuid d41d1355-84e8-ae23-e84e-227bc0231b97 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/mailer01.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -drive file=/dev/mapper/vg_main-mailer01--root,if=none,id=drive-ide0-0-0,format=raw -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -drive file=/dev/mapper/vg_main-mailer01--swap,if=none,id=drive-ide0-0-1,format=raw -device ide-drive,bus=ide.0,unit=1,drive=drive-ide0-0-1,id=ide0-0-1 -netdev tap,fd=18,id=hostnet0 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:d2:f7:31,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb -vnc 127.0.0.1:0 -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 Problem: ------------ Periodically (at least once a day), one or more of the guests lose network connectivity. Ping responds with 'host unreachable', even from the dom host. Logging in via the serial console shows no problems: eth0 is up, can ping the local host, but no outside connectivity. Restart the network (/etc/init.d/networking restart) does nothing. Reboot the machine and it comes alive again. I've verified there's no arp games going on on the primary host (the arp tables remain the same before - when it had connectivity - and after - when it doesn't. This is a critical issue affecting production services on the latest LTS release of Ubuntu. It's similar to an issue which was 'resolved' in 10.04 but appears to have risen its ugly head again. To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/997978/+subscriptions -- Best, 文剑
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