在来宾中使用多个 virtio 磁盘更改 KVM 启动顺序

Question

我刚开始玩 KVM，所以在这里学习了很多。我有一个来宾运行，最终通过 Virtio SCSI 和 Net 驱动程序 (Win2k3) 以我想要的方式设置了操作系统，并且对一切都感到非常满意。然后我关闭了系统并添加了第二个数据卷作为 Virtio。一旦我这样做了，它就会将我原来的“目标设备”从“VirtIO 磁盘 1”撞到“VirtIO 磁盘 2”，现在它不会启动，除非我手动 F12 并选择（现在是第二个）磁盘。为什么它让我的原始磁盘成为第二个，当它是第一个添加时？更重要的是，我如何重新排列它们？也许只是删除它们并以相反的顺序添加它们？似乎应该有一个配置选项或为此在 XML 文件中进行编辑。

我确实尝试编辑 vmname.xml 文件并找到了该选项。我按照我喜欢的顺序将它添加到每个磁盘设备，但是，它总是无法启动。就像它只会尝试第一个 HDD 并停在那里。它似乎忽略了 XMl 配置中的引导顺序参数。

我现在会继续删除并重新添加，但我很好奇，这不应该是不删除设备的可配置吗？

我正在运行 Ubuntu 14.04，它是最新的。我认为 libvirtd 是 1.2.2。任何其他可能有帮助的规格，请告诉我。谢谢您的帮助！格雷格

快速更新：我尝试删除两个磁盘，关闭 virt-manager，然后重新打开。然后我先添加了 datavol，然后添加了 OSVolume（应该是第一个磁盘），它确实坚持保持倒序！它没有用。

如果磁盘顺序向后，我如何让来宾启动？（无需手动引导至 F12 选项）

[编辑：来宾的 virsh dumpxml]

我看到引导顺序标签现在被删除了，因为我重新添加了磁盘。我希望这个磁盘是第一个： /dev/zvol/dpool/vm/kvm/disk/alinos/osvol

<domain type='kvm' id='80'>
<name>alinos</name>
    <uuid>a161efe4-245a-953b-89e3-04fa3b914f79</uuid>
  <memory unit='KiB'>3145728</memory>
  <currentMemory unit='KiB'>2097152</currentMemory>
  <vcpu placement='static'>2</vcpu>
  <resource>
    <partition>/machine</partition>
  </resource>
  <os>
    <type arch='i686' machine='pc-i440fx-trusty'>hvm</type>
    <boot dev='hd'/>
    <bootmenu enable='yes'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <cpu mode='custom' match='exact'>
    <model fallback='allow'>SandyBridge</model>
    <vendor>Intel</vendor>
    <feature policy='require' name='vme'/>
    <feature policy='require' name='dtes64'/>
    <feature policy='require' name='vmx'/>
    <feature policy='require' name='erms'/>
    <feature policy='require' name='xtpr'/>
    <feature policy='require' name='smep'/>
    <feature policy='require' name='pcid'/>
    <feature policy='require' name='est'/>
    <feature policy='require' name='monitor'/>
    <feature policy='require' name='smx'/>
    <feature policy='require' name='tm'/>
    <feature policy='require' name='acpi'/>
    <feature policy='require' name='osxsave'/>
    <feature policy='require' name='ht'/>
    <feature policy='require' name='pdcm'/>
    <feature policy='require' name='fsgsbase'/>
    <feature policy='require' name='f16c'/>
    <feature policy='require' name='ds'/>
    <feature policy='require' name='tm2'/>
    <feature policy='require' name='ss'/>
    <feature policy='require' name='pbe'/>
    <feature policy='require' name='ds_cpl'/>
    <feature policy='require' name='rdrand'/>
  </cpu>
  <clock offset='localtime'/>
  <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='cdrom'>
      <driver name='qemu' type='raw' cache='none'/>
      <target dev='hdc' bus='ide' tray='open'/>
      <readonly/>
      <alias name='ide0-1-0'/>
      <address type='drive' controller='0' bus='1' target='0' unit='0'/>
    </disk>
    <disk type='file' device='floppy'>
      <driver name='qemu' type='raw' cache='none'/>
      <target dev='fda' bus='fdc'/>
      <alias name='fdc0-0-0'/>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
    </disk>
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw' cache='none'/>
      <source dev='/dev/zvol/dpool/vm/kvm/disk/alinos/datavol'/>
      <target dev='vda' bus='virtio'/>
      <alias name='virtio-disk0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    </disk>
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw' cache='none'/>
      <source dev='/dev/zvol/dpool/vm/kvm/disk/alinos/osvol'/>
      <target dev='vdb' bus='virtio'/>
      <alias name='virtio-disk1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
    </disk>
    <controller type='pci' index='0' model='pci-root'>
      <alias name='pci.0'/>
    </controller>
    <controller type='ide' index='0'>
      <alias name='ide0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <controller type='fdc' index='0'>
      <alias name='fdc0'/>
    </controller>
    <controller type='scsi' index='0'>
      <alias name='scsi0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </controller>
    <controller type='usb' index='0' model='ich9-ehci1'>
      <alias name='usb0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x7'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci1'>
      <alias name='usb0'/>
      <master startport='0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0' multifunction='on'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci2'>
      <alias name='usb0'/>
      <master startport='2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x1'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci3'>
      <alias name='usb0'/>
      <master startport='4'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x2'/>
    </controller>
    <interface type='bridge'>
      <mac address='52:54:00:89:65:18'/>
      <source bridge='br0'/>
      <target dev='vnet0'/>
      <model type='virtio'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <graphics type='vnc' port='5901' autoport='yes' listen='127.0.0.1'>
      <listen type='address' address='127.0.0.1'/>
    </graphics>
    <video>
      <model type='vmvga' 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='0x05' function='0x0'/>
    </memballoon>
  </devices>
  <seclabel type='none'/>
</domain>

Answer 1

将需要的磁盘设置为 virtio-disk0，目标为 /dev/vda。磁盘在 XML 中出现的顺序也很重要，因此请确保 OS 磁盘在前