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코드 블럭
languagexml
titlevirsh dumpxml 50e4385b-f762-42a1-9f3f-89bca3785ff1
linenumberstrue
collapsetrue
<domain type='kvm' id='2'>
  <name>50e4385b-f762-42a1-9f3f-89bca3785ff1</name>
  <uuid>50e4385b-f762-42a1-9f3f-89bca3785ff1</uuid>
  <description>ubuntu-0: Lab at Mon 00:44 AM (ubuntu)</description>
  <memory unit='KiB'>2097152</memory>
  <currentMemory unit='KiB'>2097152</currentMemory>
  <vcpu placement='auto'>1</vcpu>
  <numatune>
    <memory mode='strict' placement='auto'/>
  </numatune>
  <resource>
    <partition>/machine</partition>
  </resource>
  <os>
    <type arch='x86_64' machine='pc-i440fx-4.2'>hvm</type>
    <boot dev='hd'/>
  </os>
  <features>
    <acpi/>
  </features>
  <cpu mode='host-passthrough' check='none'/>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/bin/qemu-system-x86_64</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='writethrough'/>
      <source file='/var/local/virl2/images/9688ac22-ad37-4cf3-aa06-2efe9d8c7786/50e4385b-f762-42a1-9f3f-89bca3785ff1/node0.img' index='2'>
        <seclabel model='dac' relabel='no'/>
      </source>
      <backingStore type='file' index='3'>
        <format type='qcow2'/>
        <source file='/var/lib/libvirt/images/virl-base-images/ubuntu-22-04-20240126/jammy-server-cloudimg-amd64.img'>
          <seclabel model='dac' relabel='no'/>
        </source>
        <backingStore/>
      </backingStore>
      <target dev='vda' bus='virtio'/>
      <alias name='virtio-disk0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw' cache='none'/>
      <source file='/var/local/virl2/images/9688ac22-ad37-4cf3-aa06-2efe9d8c7786/50e4385b-f762-42a1-9f3f-89bca3785ff1/config.img' index='1'/>
      <backingStore/>
      <target dev='vdb' bus='ide'/>
      <readonly/>
      <alias name='ide0-0-1'/>
      <address type='drive' controller='0' bus='0' target='0' unit='1'/>
    </disk>
    <controller type='usb' index='0' model='piix3-uhci'>
      <alias name='usb'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'>
      <alias name='pci.0'/>
    </controller>
    <controller type='ide' index='0'>
      <alias name='ide'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <interface type='udp'>
      <mac address='52:54:00:19:35:da'/>
      <source address='127.0.0.1' port='21008'>
        <local address='127.0.0.1' port='21009'/>
      </source>
      <model type='virtio'/>
      <driver>
        <host csum='off'/>
      </driver>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </interface>
    <serial type='pty'>
      <source path='/dev/pts/13'/>
      <target type='isa-serial' port='0'>
        <model name='isa-serial'/>
      </target>
      <alias name='serial0'/>
    </serial>
    <console type='pty' tty='/dev/pts/13'>
      <source path='/dev/pts/13'/>
      <target type='serial' port='0'/>
      <alias name='serial0'/>
    </console>
    <input type='mouse' bus='ps2'>
      <alias name='input0'/>
    </input>
    <input type='keyboard' bus='ps2'>
      <alias name='input1'/>
    </input>
    <memballoon model='virtio'>
      <alias name='balloon0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </memballoon>
    <rng model='virtio'>
      <backend model='random'>/dev/urandom</backend>
      <alias name='rng0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </rng>
  </devices>
  <seclabel type='dynamic' model='apparmor' relabel='yes'>
    <label>libvirt-50e4385b-f762-42a1-9f3f-89bca3785ff1</label>
    <imagelabel>libvirt-50e4385b-f762-42a1-9f3f-89bca3785ff1</imagelabel>
  </seclabel>
  <seclabel type='dynamic' model='dac' relabel='yes'>
    <label>+64055:+108</label>
    <imagelabel>+64055:+108</imagelabel>
  </seclabel>
</domain>

Disk - snapshot

c8000v-universalk9_8G_serial.17.13.01a.qcow2

read-only base image

node0.img

differences

코드 블럭
languagexml
titlevirsh dumpxml 86770ca2-685f-4c57-b215-350265c973c4
linenumberstrue
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='writethrough'/>
      <source file='/var/local/virl2/images/9688ac22-ad37-4cf3-aa06-2efe9d8c7786/86770ca2-685f-4c57-b215-350265c973c4/node0.img' index='2'>
        <seclabel model='dac' relabel='no'/>
      </source>d
      <backingStore type='file' index='3'>
        <format type='qcow2'/>
        <source file='/var/lib/libvirt/images/virl-base-images/cat8000v-17-13-01a/c8000v-universalk9_8G_serial.17.13.01a.qcow2'>
          <seclabel model='dac' relabel='no'/>
        </source>
        <backingStore/>
      </backingStore>
      <target dev='vda' bus='virtio'/>
      <alias name='virtio-disk0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </disk> 
코드 블럭
linenumberstrue
# ls -alh /var/local/virl2/images/9688ac22-ad37-4cf3-aa06-2efe9d8c7786/86770ca2-685f-4c57-b215-350265c973c4/node0.img \
/var/lib/libvirt/images/virl-base-images/cat8000v-17-13-01a/c8000v-universalk9_8G_serial.17.13.01a.qcow2
-r--rw-r-- 1 libvirt-qemu virl2 1.9G Jun 23 23:35 /var/lib/libvirt/images/virl-base-images/cat8000v-17-13-01a/c8000v-universalk9_8G_serial.17.13.01a.qcow2
-rw-r--r-- 1 libvirt-qemu kvm   303M Aug 19 01:16 /var/local/virl2/images/9688ac22-ad37-4cf3-aa06-2efe9d8c7786/86770ca2-685f-4c57-b215-350265c973c4/node0.img


코드 블럭
linenumberstrue
root@cml-controller:~# virsh domblklist 86770ca2-685f-4c57-b215-350265c973c4
 Target   Source
------------------------------------------------------------------------------------------------------------------------
 vda      /var/local/virl2/images/.../86770ca2-685f-4c57-b215-350265c973c4/node0.img
 vdb      /var/local/virl2/images/.../86770ca2-685f-4c57-b215-350265c973c4/config.img

root@cml-controller:~#  virsh domblkstat 86770ca2-685f-4c57-b215-350265c973c4 vda --human
Device: vda
 number of read operations:      20923
 number of bytes read:           1582396928
 number of write operations:     1077
 number of bytes written:        608612352
 number of flush operations:     0
 total duration of reads (ns):   6638006817
 total duration of writes (ns):  238078868428
 total duration of flushes (ns): 0

https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/7/html/virtualization_deployment_and_administration_guide/sect-statlists


Network - QEMU UDP Unicast Tunnel

https://linuxsimba.github.io/qemu-tunnel-types

...

코드 블럭
# virsh domiflist 86770ca2-685f-4c57-b215-350265c973c4
 Interface   Type   Source   Model     MAC
----------------------------------------------------------
 -           udp    -        vmxnet3   52:54:00:05:2d:cf
 -           udp    -        vmxnet3   52:54:00:0f:2a:29
 -           udp    -        vmxnet3   52:54:00:04:be:e7
 -           udp    -        vmxnet3   52:54:00:0d:32:f4

...



root@cml-controller:~# netstat -anp | grep 2100
udp        0      0 127.0.0.1:21000         0.0.0.0:*                           4484/fabric
udp        0      0 127.0.0.1:21001         0.0.0.0:*                           66319/qemu-system-x
udp        0      0 127.0.0.1:21002         0.0.0.0:*                           4484/fabric
udp        0      0 127.0.0.1:21003         0.0.0.0:*                           66319/qemu-system-x
udp        0      0 127.0.0.1:21005         0.0.0.0:*                           66319/qemu-system-x
udp        0      0 127.0.0.1:21007         0.0.0.0:*                           66319/qemu-system-x
udp        0      0 127.0.0.1:21008         0.0.0.0:*                           4484/fabric
udp        0      0 127.0.0.1:21009         0.0.0.0:*                           66382/qemu-system-x

root@cml-controller:~# ps aux | grep 4484
virl2  /usr/local/bin/fabric -logtostderr -stderrthreshold=WARNING 
           -apiaddress ip6-localhost:8080 -remote lo -remoteipv6 -controller [::1]:443 -verify=false