libvirtd vm-tmp

 1 <domain type='kvm'>
 2   <name>vm-test</name>
 3   <uuid>e0cccc71-1a93-d008-15c0-60155feecb01</uuid>
 4   <memory unit='KiB'>2097152</memory>
 5   <currentMemory unit='KiB'>2097152</currentMemory>
 6   <vcpu>2</vcpu>
 7   <os>
 8     <type arch='x86_64'>hvm</type>
 9     <boot dev='hd'/>
10   </os>
11   <features>
12     <acpi/>
13     <apic/>
14     <pae/>
15   </features>
16   <clock offset='utc'/>
17   <on_poweroff>destroy</on_poweroff>
18   <on_reboot>restart</on_reboot>
19   <on_crash>restart</on_crash>
20   <devices>
21     <emulator>/usr/libexec/qemu-kvm</emulator>
22     <disk type='block' device='cdrom'>
23       <driver name='qemu' type='raw'/>
24       <target dev='hdc' bus='ide'/>
25       <readonly/>
26       <address type='drive' controller='0' bus='1' unit='0'/>
27     </disk>
28     <disk type='file' device='disk'>
29       <driver name='qemu' type='qcow2'/>
30       <source file='/root/image/base_centos7.8_v5'/>
31       <target dev='vda' bus='virtio'/>
32     </disk>
33     <controller type='ide' index='0'>
34       <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
35     </controller>
36         <controller type='scsi' index='0' model='virtio-scsi'>
37     <address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/>
38         </controller>
39     <serial type='pty'>
40       <target port='0'/>
41     </serial>
42     <console type='pty'>
43       <target type='serial' port='0'/>
44     </console>
45     <input type='mouse' bus='ps2'/>
46     <graphics type='vnc' port='-1' autoport='yes' sharePolicy='allow-exclusive'>
47                 <listen type='address' address='127.0.0.1'/>
48         </graphics>
49     <video>
50       <model type='qxl' vram='16384' heads='1'/>
51       <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
52     </video>
53     <memballoon model='virtio'>
54       <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
55     </memballoon>
56   </devices>
57 </domain>

 1 virsh qemu-monitor-command vm-test --hmp "gdbserver"
 2 virsh console vm-test
 3 
 4 
 5 
 6 https://en.wikibooks.org/wiki/QEMU/Monitor
 7 https://qemu-project.gitlab.io/qemu/system/monitor.html
 8 
 9 virsh qemu-monitor-command vm-123456 --hmp "info mtree"
10 virsh qemu-monitor-command vm-123456 --hmp "gdbserver"
11 virsh qemu-monitor-command dev-f706f5 --hmp "info registers "
12 
13 
14 so good using libvirsh 
15 https://access.redhat.com/blogs/766093/posts/2690881
16 <domain type='kvm'
17        xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0' >
18      <qemu:commandline>
19           <qemu:arg value='-s'/>
20      </qemu:commandline>
21 </domain>

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