Weekly status #242

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Weekly status for the week of the 28th March to the 3rd April.

Introduction

The highlight of of past week was the release of LXD 5.0 LTS. As with all our other LTS releases, this one will be supported for 5 years (June 2027) and will receive a number of bugfix and security point releases over that time.

Please see the release notes and the release video:

https://www.youtube.com/watch?v=WW6dQGIqGsA

Additionally @stgraber has added a video on managing the LXD snap package:

https://www.youtube.com/watch?v=otHUQ5aB2Fs

LXD

New features:

  • Added optimized refresh support for ZFS and BTRFS volumes, which will help speed up VM refreshes particularly.
  • Added support for VM USB hotplugging.
  • Adds support for ovn-chassis cluster member role, which indicates which cluster members should be considered candidates for use as the gateway chassis for OVN networks.
  • Added syscall interception for sched_setscheduler.

Improvements:

  • Moves the instance storage volume database record management into the lxd/storage package for consistency with custom volume database record management.
  • Removes pre-LXD 4.0.0 patches as we no longer support upgrading from pre-LXD 4.0.0.
  • Replaces logging package with upstream logrus rather than maintaining an older forked logging package.
  • Added lvm.thinpool_metadata_size storage pool option to allow manually setting the thinpool metadata volume size, and changed the default so that LVM will now pick an appropriate metadata volume size based on the size of the thin pool rather than specifying a fixed 1GB size as was previously done. This allows smaller thin pools to be used.
  • Adds lxc cluster role {add,remove} commands to make it easier to manage cluster member roles.
  • Require TLS 1.3 for API access.

Bug fixes:

  • Fixed a regression added by VM disk hotplug that removed the serial property of a disk which meant the /dev/disk/by-id/ entries did not appear.
  • Fixed an image refresh regression for clustering.
  • Fixed regression in lxd-agent shutdown.

LXC

Improvements:

  • Containers are now stopped in the opposite order they were started.

Bug fixes:

  • Fixed an issue preventing dnsmasq from starting if misc directory didn’t exist.

Distrobuilder

Improvements:

  • Optimize mount options for speed.

Dqlite (RAFT library)

Improvements:

  • Adds snapshot_finalize which allows checkpoints to run again, freeing allocated buffers.

Dqlite (database)

Improvements:

  • Loosen snapshot_trailing restrictions which allows to test snapshots more in jepsen tests.

YouTube videos

The LXD team is running a YouTube channel with live streams covering LXD releases and weekly videos on different aspects of LXD. You may want to give it a watch and/or subscribe for more content in the coming weeks.

https://www.youtube.com/lxd-videos

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 planned currently.

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.

  • Prometheus & grafana integration with the LXD charm
  • 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

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

  • snapcraft: Add support for RISCV64
  • lxcfs: Fix some issues with nesting support
  • lxd: Bump to 5.0.0
  • lxd: Cherry-pick upstream bugfixes
  • sqlite: Bump to 3.38.2
  • squashfs: Bump to 1.1.4
  • zfs: Bump to 2.1.4
  • nvidia-container: Bump to 1.9.0
  • ovn: Bump to 22.03.0
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