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Rene´s blog

Blogging about Programming, Security, Linux, Networking and Web Apps.

LXD and live migration / Canoncial needs support for CRIU


LXD is a container “hypervisor”, its similiar to
XEN, KVM, VirtualBox or VMWare if you use it Linux only.

Lex-dee is a full stack os hypervisor while Docker’s main focus lays on app containerisation.

Some of the main features of LXD are:

  • Live Migrations (Move one container to another Host while its running)
  • Secure by design
  • Scalable
  • Intuitive to use
  • Its image based
  • Supports limits (Max memory, CPU, disk IO)
  • Support for multiple network interfaces, by macvlan or bridges
  • Support for bind mounts and mounting block devices into containers
  • On ZFS and BTRFS containers take only a little space

Nice features, not? But there’s a catch, Canoncial isn’t supporting the live Migration work anymore:

Canoncial CRIU Support

Please tell Canoncial that you need LXD live migrations if your a paying customer of canoncial or if you get one!

P.s.: XEN, KVM, Virtualbox and VMWare is ofc more secure than containers, we should compare it to Docker, OpenVZ, Virtuozzo and FreeBSD jail.