How to make a "hot" backup of a KVM virtual machine?

Question

linux

Hello! There is a physical Debian server with two KVM virtual machines on lvm volumes, you need to backup virtual2 without stopping it. I'm trying to do this:

# virsh list
Id Name State
---------------------------------------------------- --------
4 virtual1 running
5 virtual2 running
# vzdump --dumpdir /data/transfer --compress --snapshot --bwlimit 7000 5
ERROR: got reserved VM ID '5'

Google says that vzdump doesn't understand VMID < 100. What to do? Backup needs to be done exactly "for profit", without stopping the service

Answer 1

Have you tried it with virsh snapshot-XXXX ? True, I have qcow2 or ceph everywhere :-)

snapshot-create Create a snapshot based on XML
snapshot-create-as Create a snapshot based on arguments
snapshot-current View and modify the current snapshot
snapshot-delete Delete a domain
snapshot snapshot-dumpxml Domain Snapshot Dump XML
snapshot-edit Edit Snapshot XML
snapshot-info snapshot data
snapshot-list Show snapshots of a domain
snapshot-parent Get the name of the parent of a snapshot
snapshot-revert Restore a domain from a snapshot