我正在运行一台安装了 Ubuntu Server 13.04（64 位）的台式机。服务器配置了 libvirt，我使用 virt-manager 来控制和配置虚拟机以及 virsh。我已经运行这个设置一个月了，突然开始遇到网络问题。手头的主要问题发生在我第一次启动虚拟机时。当它们启动时，一切似乎都运行正常。在通过 AFP（使用 netatalk）或 SMB（使用 samba）传输少量数据后，网络停止工作。虚拟机就像被拔掉了网线一样。它们会立即停止响应任何事情。主机仍然可以访问，我甚至可以通过 VNC 控制虚拟机。有什么建议吗？
以下是我的存储虚拟机的示例配置：
<domain type='kvm'>
<name>Storage</name>
<uuid>9f1085d8-afc9-041c-5ed8-9a07f4383418</uuid>
<memory unit='KiB'>1048576</memory>
<currentMemory unit='KiB'>1048576</currentMemory>
<vcpu placement='static'>8</vcpu>
<os>
<type arch='x86_64' machine='pc-i440fx-1.4'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<cpu mode='custom' match='exact'>
<model fallback='allow'>Nehalem</model>
<vendor>Intel</vendor>
<feature policy='require' name='tm2'/>
<feature policy='require' name='est'/>
<feature policy='require' name='monitor'/>
<feature policy='require' name='ss'/>
<feature policy='require' name='vme'/>
<feature policy='require' name='dtes64'/>
<feature policy='require' name='rdtscp'/>
<feature policy='require' name='ht'/>
<feature policy='require' name='ds'/>
<feature policy='require' name='pbe'/>
<feature policy='require' name='tm'/>
<feature policy='require' name='pdcm'/>
<feature policy='require' name='vmx'/>
<feature policy='require' name='ds_cpl'/>
<feature policy='require' name='xtpr'/>
<feature policy='require' name='acpi'/>
</cpu>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/bin/kvm-spice</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/var/lib/libvirt/images/Storage.img'/>
<target dev='vda' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</disk>
<disk type='block' device='disk'>
<driver name='qemu' type='raw'/>
<source dev='/dev/sdd'/>
<target dev='vdd' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
</disk>
<disk type='file' device='cdrom'>
<driver name='qemu' type='raw'/>
<source file='/home/clay/ISOs/Ubuntu13.04Server64.iso'/>
<target dev='hdc' bus='ide'/>
<readonly/>
<address type='drive' controller='0' bus='1' target='0' unit='0'/>
</disk>
<controller type='usb' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
</controller>
<controller type='ide' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<interface type='bridge'>
<mac address='52:54:00:d6:30:fd'/>
<source bridge='br0'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<serial type='pty'>
<target port='0'/>
</serial>
<console type='pty'>
<target type='serial' port='0'/>
</console>
<input type='mouse' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0' passwd='<redacted>'>
<listen type='address' address='0.0.0.0'/>
</graphics>
<sound model='ich6'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</sound>
<video>
<model type='cirrus' vram='9216' heads='1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</memballoon>
</devices>
</domain>
答案1
我 99% 确信这是由 virtio 网络驱动卡引起的（我发现它完全不可靠）。现在我已将所有 vm 切换到 e1000，它从未出现过故障。
因此，将配置的网络部分更改为：
<interface type='bridge'>
<mac address='52:54:00:d6:30:fd'/>
<source bridge='br0'/>
<model type='e1000'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
希望这可以帮助。