kvm maintenance command memo

objectives

• personal memo

maintenance

list all vm

virsh -c qemu:///system list --all

list all vm (another hypervisor)

TargetKVMIP=''

virsh -c qemu+ssh://root@$TargetKVMIP/system list --all

list used vnc port

for i in `virsh -c qemu:///system list --all | awk '{print $2}' | grep -v Name` ; do virsh dumpxml $i|grep vnc  ; done | sort

edit vm

• dump xml

virsh dumpxml <domain name>

• edit xml

virsh edit <domain name>

vm control

• start

virsh start <domain name>

• shutdown

virsh shutdown <domain name>

• stop

virsh destroy <domain name>

• remove

virsh undefine <domain name>

clone vm

• on same kvm

CurrentVM=''
NewVM=''

virt-clone --connect=qemu:///system -o $CurrentVM -n $NewVM -f /mnt/export/hypervisor/datastore1/$NewVM.gcow2

• on another kvm

CurrentVM=''
NewVM=''
TargetKVMIP=''

scp $CurrentVM.qcow2 $TargetKVMIP:/mnt/export/hypervisor/datastore1/.
scp /etc/libvirt/qemu/$CurrentVM.xml $TargetKVMIP:/etc/libvirt/qemu/.

virsh --connect=qemu+ssh://$TargetKVMIP/system define /etc/libvirt/qemu/$CurrentVM.xml

virsh -c qemu+ssh://root@$TargetKVMIP/system list --all

virt-clone --connect=qemu+ssh://$TargetKVMIP/system -o $CurrentVM -n $NewVM -f /mnt/export/hypervisor/datastore1/$NewVM.gcow2

• take live snapshot

CurrentVM=''

virsh snapshot-create-as $CurrentVM snapshot1 "snapshot1 description" --disk-only --atomic