Skip to main content

Primary links

  • Home
  • AI
  • Kubernetes
  • Incus
  • Ansible
  • Terraform
  • OpenStack
  • Virtualization
  • Linux
  • SmartHome
  • HowTo

Misc

  • Linux
  • Hardware
  • Programming
  • Databases
  • CLI
  • Multimedia
  • Plugins
  • Windows
  • Contact

Cloud

  • OpenStack
  • cloud-config
  • nextcloud

Virtualization

  • Virtualization
  • Docker
  • KVM
    • Snapshot
    • VM
    • virsh
  • Kubernetes
  • LXC
  • LXD
  • QEMU
  • VMware
  • VirtualBox
  • multipass
  • podman
  • vagrant
  • XEN
  • Incus

Network

  • DNS
  • Firewall
  • Linux
  • OpenvSwitch
  • SSL
  • VLAN
  • VPN
  • iPXE
  • namespaces
  • nmcli
  • tcpdump

Storage

  • CEPH
  • DRBD
  • LVM
  • S3
  • ZFS
  • btrfs

Automation / CI/CD

  • Install
  • Ansible
  • GitLab
  • LLM
  • Preseed
  • Puppet
  • Terraform
  • Ubuntu autoinstall

Monitoring / Visualisation

  • Grafana
  • Icinga
  • Prometheus
  • Monitoring
  • ELK
  • mermaid
  • virtualization
  • kvm

virsh domblklist ${VM}
virsh blockcommit ${VM} vda --pivot
virsh domblklist ${VM}

# list snapshots
virsh snapshot-list ${VM}
# delete snapshot
virsh snapshot-delete ${VM} ${TIMESTAMP} --metadata
# fix "error: block copy still active: disk 'vda' already in active block job"
VM=vm1
virsh blockjob ${VM} vda --abort
virsh blockcommit ${VM} vda --pivot
virsh snapshot-list ${VM}
SNAP=1527804440
virsh snapshot-delete ${VM} ${SNAP} --metadata
# list snapshots
for VM in $(virsh list --state-running --name); do
    echo ${VM}
virsh domblklist ${VM}
    virsh snapshot-list ${VM}
done
# list discs
for VM in $(virsh list --all --name); do
    echo -n "${VM} "
virsh domblklist ${VM} | grep vda
done

virsh blockjob --info $VM vda

Links
http://www.bitbull.ch/notes/post/external-qcow2-snapshots-on-centos7-kvm-/
https://wiki.libvirt.org/page/Live-disk-backup-with-active-blockcommit
https://wiki.libvirt.org/page/Live-merge-an-entire-disk-image-chain-including-current-active-disk
http://www.bitbull.ch/notes/post/external-qcow2-snapshots-on-centos7-kvm-/
https://blog.programster.org/kvm-external-snapshots