Weekly status #222


Weekly status for the week of the 25th of October to the 31st of October.

Introduction

Last week LXD saw the addition of the last remaining roadmap items (Built in authoritative DNS server, VM stateful migrations and hardware accelerated OVN NICs using SRIO-VF) for the last development cycle, and we are now going into our next 6-month cycle.

LXD

@stgraber added a video on easy overlay networking in LXD with the Ubuntu Fan:

New features:

  • A built-in authoritative DNS server for serving network DNS zones. See the design specification for more info.
  • Hardware accelerated OVN networks using supported SR-IOV NICs. See SR-IOV hardware acceleration details in the OVN NIC device documentation for more details.
  • Stateful migrations for virtual machines - this allows a running VM to be migrated without having to shut it down normally. Instead the VM’s state is saved to disk and migrated to the target and then restored. For Ceph based storage pools this means a quick VM migration as only the VM’s memory state has to be transferred.

Improvements:

  • Stop logging excessive errors when unable to access swap information for metrics exporter.
  • Add verification of seccomp pidfs.

Bug fixes:

  • VM fix host-nodes on multi-node host.
  • Consider memory limit stats in metrics exporter.
  • Fix a deadlock in websocket control message sending.
  • Fix issue during clustering instance restore where if an instance wouldn’t stop within its deadline,
    we would return nil at that point and so silently abort the restore entirely.
  • Allow static IP setting on bridged NIC connected to an unmanaged bridge when using MAAS subnet setting.

LXC

Bug fixes:

  • Fixed an issue that caused some characters from LXD’s raw.lxc to be dropped.
  • Fixed segfault when compiled with liburing.so.2.1.0.

Distrobuilder

Improvements:

  • Added a --sources-dir flag which controls where sources are downloaded to.
  • Added a --keep-sources flag which defaults to true.

Dqlite (database)

Bug fixes:

  • Fixed a stmt leak when closing during query_sql with large result set.

Youtube channel

We’ve started a Youtube channel with live streams covering LXD releases and its use in the wider ecosystem.

You may want to give it a watch and/or subscribe for more content in the coming weeks.

Contribute to LXD

Ever wanted to contribute to LXD but not sure where to start?
We’ve recently gone through some effort to properly tag issues suitable for new contributors on Github: Easy issues for new contributors

Upcoming events

  • Nothing to report this week

Ongoing projects

The list below is feature or refactoring work which will span several weeks/months and can’t be tied directly to a single Github issue or pull request.

  • Distrobuilder Windows support
  • Virtual networks in LXD
  • Various kernel work
  • Stable release work for LXC, LXCFS and LXD

Upstream changes

The items listed below are highlights of the work which happened upstream over the past week and which will be included in the next release.

LXD

LXC

LXCFS

  • Nothing to report this week

Distrobuilder

Dqlite (RAFT library)

Dqlite (database)

Dqlite (Go bindings)

  • Nothing to report this week

LXD Charm

  • Nothing to report this week

Distribution work

This section is used to track the work done in downstream Linux distributions to ship the latest LXC, LXD and LXCFS as well as work to get various software to work properly inside containers.

Ubuntu

  • Nothing to report this week

Snap

  • lxc: Cherry-pick upstream bugfixes
  • lxd: Cherry-pick upstream bugfixes