loongarch架构下，创建虚拟机，进行虚拟机热迁移操作，同时源虚拟机中不停做重启操作,迁移后目的虚拟机挂死

**【标题描述】能够简要描述问题：说明什么场景下，做了什么操作，出现什么问题（尽量使用正向表达方式）**
loongarch架构下，创建虚拟机，进行虚拟机热迁移操作，源虚拟机中不停做重启操作，在这个过程中做虚拟机迁移，迁移完成后目的虚拟机挂死
**一、缺陷信息**

**内核信息：**
5.10.0-60.88.0.112.oe2203.loongarch64

**缺陷归属组件：**
虚拟化 内核
**缺陷归属的版本：**
cat /etc/os-release 
NAME="openEuler"
VERSION="22.03 LTS"
ID="openEuler"
VERSION_ID="22.03"
PRETTY_NAME="openEuler 22.03 LTS"
ANSI_COLOR="0;31"
**缺陷简述：**
loongarch架构下，创建虚拟机，进行虚拟机热迁移操作，源虚拟机中不停做重启操作，在这个过程中做虚拟机迁移，迁移完成后目的虚拟机挂死
**【环境信息】**
硬件信息
- 裸机场景请提供问题的硬件信息
- 虚拟机场景请提供虚拟机的XML文件或配置信息

```
<domain type='kvm' id='9'>
  <name>debian11</name>
  <uuid>fb7d3b36-046d-452b-a7ed-9dafd199fbf8</uuid>
  <metadata>
    <libosinfo:libosinfo xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0">
      <libosinfo:os id="http://debian.org/debian/11"/>
    </libosinfo:libosinfo>
  </metadata>
  <memory unit='KiB'>4194304</memory>
  <currentMemory unit='KiB'>4194304</currentMemory>
  <vcpu placement='static'>4</vcpu>
  <resource>
    <partition>/machine</partition>
  </resource>
  <os>
    <type arch='loongarch64' machine='loongson7a_v1.0'>hvm</type>
    <loader readonly='yes' type='rom'>/usr/share/qemu/loongarch_bios.bin</loader>
    <boot dev='hd'/>
  </os>
  <cpu mode='custom' match='exact' check='partial'>
    <model fallback='forbid'>Loongson-3A5000</model>
  </cpu>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2'/>
      <source file='/var/lib/libvirt/images/openEuler-22.03-loongarch64.qcow2.backup' index='1'/>
      <backingStore/>
      <target dev='sda' bus='sata'/>
      <alias name='sata0-0-0'/>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
    </disk>
    <controller type='usb' index='0' model='qemu-xhci'>
      <alias name='usb'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x00' function='0x0'/>
    </controller>
    <controller type='pci' index='0' model='pcie-root'>
      <alias name='pcie.0'/>
    </controller>
    <controller type='pci' index='1' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='1' port='0x18'/>
      <alias name='pci.1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0' multifunction='on'/>
    </controller>
    <controller type='pci' index='2' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='2' port='0x19'/>
      <alias name='pci.2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x1'/>
    </controller>
    <controller type='pci' index='3' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='3' port='0x1a'/>
      <alias name='pci.3'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x2'/>
    </controller>
    <controller type='pci' index='4' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='4' port='0x1b'/>
      <alias name='pci.4'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x3'/>
    </controller>
    <controller type='pci' index='5' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='5' port='0x1c'/>
      <alias name='pci.5'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x4'/>
    </controller>
    <controller type='pci' index='6' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='6' port='0x1d'/>
      <alias name='pci.6'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x5'/>
    </controller>
    <controller type='pci' index='7' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='7' port='0x1e'/>
      <alias name='pci.7'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x6'/>
    </controller>
    <controller type='pci' index='8' model='pcie-to-pci-bridge'>
      <model name='pcie-pci-bridge'/>
      <alias name='pci.8'/>
      <address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x0'/>
    </controller>
    <controller type='virtio-serial' index='0'>
      <alias name='virtio-serial0'/>
      <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0'/>
    </controller>
    <controller type='sata' index='0'>
      <alias name='sata0'/>
      <address type='pci' domain='0x0000' bus='0x08' slot='0x01' function='0x0'/>
    </controller>
    <interface type='network'>
      <mac address='52:54:00:5b:e0:ca'/>
      <source network='network1' portid='e89e035f-40ce-41cd-a41e-51b7d3083a42' bridge='virbr0'/>
      <target dev='vnet0'/>
      <model type='virtio'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
    </interface>
    <serial type='pty'>
      <source path='/dev/pts/1'/>
      <target port='0'/>
      <alias name='serial0'/>
    </serial>
    <console type='pty' tty='/dev/pts/1'>
      <source path='/dev/pts/1'/>
      <target type='serial' port='0'/>
      <alias name='serial0'/>
    </console>
    <channel type='unix'>
      <source mode='bind' path='/var/lib/libvirt/qemu/channel/target/domain-9-debian11/org.qemu.guest_agent.0'/>
      <target type='virtio' name='org.qemu.guest_agent.0' state='disconnected'/>
      <alias name='channel0'/>
      <address type='virtio-serial' controller='0' bus='0' port='1'/>
    </channel>
    <input type='tablet' bus='usb'>
      <alias name='input0'/>
      <address type='usb' bus='0' port='1'/>
    </input>
    <input type='keyboard' bus='usb'>
      <alias name='input1'/>
      <address type='usb' bus='0' port='2'/>
    </input>
    <graphics type='vnc' port='5900' autoport='yes' listen='127.0.0.1'>
      <listen type='address' address='127.0.0.1'/>
    </graphics>
    <video>
      <model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1' primary='yes'/>
      <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='0x05' slot='0x00' function='0x0'/>
    </memballoon>
  </devices>
  <seclabel type='dynamic' model='dac' relabel='yes'>
    <label>+107:+107</label>
    <imagelabel>+107:+107</imagelabel>
  </seclabel>
</domain>

```
软件信息
- OS版本及分支信息
- 内核信息
- 发现问题的组件版本信息
网络信息
- 如果有特殊组网，请提供网络拓扑信息

**【问题复现步骤】**，请描述具体的操作步骤
两台物理机，同时创建虚拟机，然后进行虚拟机迁移，查看迁移是否能够成功

```

配置说明
基于共享存储的动态迁移涉及 NFS server 配置、源宿主机配置、目的宿主机配置

在源宿主机上挂载虚拟机镜像，并创建虚拟机。命令行如下：

# mount -t nfs nfs-server-ip:/home/kvm-nfs  /home/kvm-nfs
    # qemu-system-loongarch64 \
    	-name 'avocado-vt-vm1' \
    	-cpu 'Loongson-3A5000' \
    	-machine loongson7a \
    	-m 2048 \
    	-smp 2 \
    	-bios /usr/share/qemu/loongarch_bios.bin \
    	-boot c -d int \
    	-drive file=/home/kvm-nfs/kvm-test.qcow2,if=virtio \
    	-enable-kvm \
    	-vga qxl \
    	-vnc :0 \
    	-net nic -net tap \
    	-serial stdio\
    	-monitor telnet:localhost:4444,server,nowait

在虚拟机下，创建service脚本
vim /etc/systemd/system/myservice.service
--------------------------------------
[Unit]
Description=test
[Service]
 ExecStart=/root/myservice.sh
[Install]
WantedBy=multi-user.target
----------------------------------

在虚拟机下，创建重启脚本
cd /root
--------------------
vim myservice.sh
#!/usr/bin/bash

reboot -f
-------------------

目的宿主机配置

在目的宿主机上挂载虚拟机镜像，并带有 “-incoming” 参数启动虚拟机使其处于迁移监听状态。命令行如下：**

# mount -t nfs nfs-server-ip:/home/kvm-nfs  /home/kvm-nfs
    # qemu-system-loongarch64 \
    	-name 'avocado-vt-vm1' \
    	-cpu 'Loongson-3A5000' \
    	-machine loongson7a \
    	-m 2048 \
    	-smp 2 \
    	-bios /usr/share/qemu/loongarch_bios.bin \
    	-boot c -d int \
    	-drive file=/home/kvm-nfs/kvm-test.qcow2,if=virtio \
    	-enable-kvm \
    	-vga qxl \
    	-vnc :0 \
    	-net nic -net tap \
    	-serial stdio\
    	-monitor telnet:localhost:4444,server,nowait
    	-incoming tcp:0:6666

迁移
在源宿主机的 QEMU monitor 中，运行 “migrate tcp:kvm-host2:6666” 命令，即可进行动态迁移。在迁移过程中，实时显示迁移进度，当提示为 “Completed 100 %” 即表示迁移完成。命令如下：
    # telnet localhost 4444
	Trying ::1...
	Connected to localhost.
	Escape character is '^]'.
	QEMU 3.1.0 monitor - type 'help' for more information
	(qemu) 
	(qemu) migrate  tcp:10.20.42.197:6666
	Completed 100 %
	(qemu)

与此同时，目的宿主机上启动迁移监听状态的虚拟机的命令行所在的标准输出中，会提示迁移完成情况。当传输完成时提示 "Completed 100 %", 如下：
    # qemu-system-loongarch64 \
    	-name 'avocado-vt-vm1' \
    	-cpu 'Loongson-3A5000' \
    	-machine loongson7a \
    	-m 2048 \
    	-smp 2 \
    	-bios /usr/share/qemu/loongarch_bios.bin \
    	-boot c -d int \
    	-drive file=/home/kvm-nfs/kvm-test.qcow2,if=virtio \
    	-enable-kvm \
    	-vga qxl \
    	-vnc :0 \
    	-net nic -net tap \
    	-serial stdio\
    	-monitor telnet:localhost:4444,server,nowait
    	-incoming tcp:0:6666

Receiving block device images
	Completed 100 %

至此，基于共享存储的动态迁移就已经完成了。
```
**【实际结果】**，请描述出问题的结果和影响
测试结果如下:
迁移完成后发现目的虚拟机挂死
**【其他相关附件信息】**
比如系统message日志/组件日志、dump信息、图片等

**缺陷详情参考链接：**

**缺陷分析指导链接：**
https：xxx

GVP openEuler/kernel

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