Weekly status #275

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Weekly status for the week of the 14th November to the 20th November.

Introduction

The highlight of the past week was the release of LXD 5.8. This release includes VM CPU hotplugging support, device override on init and launch, creation dates for custom volumes and several bug fixes and performance improvements. Please see the release notes and release video (below) for more details.

https://www.youtube.com/watch?v=PFxAj6z27Vc

Running LXD in production
Additionally @stgraber has added a video on running LXD in production.
It covers host configuration, LXD configuration, firewalling and monitoring:

https://www.youtube.com/watch?v=QyXOOE_4cm0

LXD

New features:

  • Added support for VM CPU hotplugging. See LXD 5.8 release notes for more details.
  • Added support to the lxc command for overriding devices on instance init or launch.
    See LXD 5.8 release notes for more details.

Improvements:

  • Added creation date time field to custom volumes and snapshots. Not only is this useful information to know in its own right, it also improves storage volume copying in refresh mode as it is now better able to detect when a snapshot has changed between source and target. See LXD 5.8 release notes for more details.
  • When shutting down LXD any running instances are stopped concurrently. Previously this concurrency was unbounded and could cause resource exhaustion on the host if there were many running instances. Now this concurrency has been limited to the number of CPU cores on the host.

Bug fixes:

  • Increased the default TCP user timeout from 30 seconds to 2 minutes to improve resilience of instance and custom volume transfers over WAN connections.
  • When deleting an image volume from a storage pool, the storage subsystem no longer relies on loading the image record in order to ascertain its type. It now relies on the storage volume’s own record type. This improves resilience in cases where the image record has been inadvertently removed.
  • Adds NIC MAC address hwaddr field to the /dev/lxd /1.0/devices endpoint to allow cloud-init to identify NICs in VMs because the NIC device’s interface name is not applied to VMs.
  • Fixed missing instance-shutdown lifecycle event for container initiated shutdown.
  • Fixed attaching cephfs custom storage volumes to VMs.
  • Fixed copying custom storage volumes to remote machine from a cluster member.
  • Allows ZFS block volumes to use storage pool’s zfs.blocksize setting.

LXCFS

Bug fixes:

  • Fixed build on ia64.

Distrobuilder

Improvements:

  • Added support for Springdale Linux 9.

Bug fixes:

  • Revert dropping luet package manager as Luet is used by Funtoo Macaroni OS.
  • Masks the systemd-binfmt.service as it fails for containers.

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

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.

  • 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

  • Nothing to report this week

LXCFS

Distrobuilder

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

  • lxd: Bump to 5.8
  • lxd: Cherry-pick upstream bugfixes
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