Weekly status #295

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Weekly status for the week of 17th April to 23rd April.

Introduction

This past week saw the addition of our final LXD roadmap feature for this cycle, the ability to automatically relocate instances running on remote shared storage to a different cluster member when the member it was running on fails. There has also been a focus on bug fixes to reduce our backlog of issues.

Job openings

Canonical Ltd. strengthens its investment into LXD and is looking at building multiple squads under the technical leadership of @stgraber.

As such, we are looking for first line managers (highly technical) and individual contributors to grow the team and pursue our efforts around scalability and clustering.

All positions are 100% remote with some travel for internal events and conferences.

For more info please see LXD related openings at Canonical Ltd (2022-2023)

LXD

New features:

  • Added support for automated cluster instance healing when using instances on remote shared storage pools (Ceph). This allows for instances to be automatically relocated to an online cluster member when the cluster member it was running on fails.

Improvements:

  • Added AppArmor profile for rsync invocations to improve security.
  • Exposed total memory and disk in state API.
  • Avoid rewriting the backup.yaml file when each instance snapshot is removed as part of an instance delete (as the file will be removed as part of the instance delete anyway).

Bug fixes:

  • Fixed issue with the forkdns AppArmor profile.
  • Fixed issue that left ovn NIC devices non-functional after live VM migration.
  • Fixed issue with nested NIC ordering during instance start and stop to ensure that the parent NIC(s) are started first and stopped last.
  • Fixed issue that delayed instance forceful stop (lxc stop -f <instance>) when an active file SFTP session was in progress. Now the active SFTP session is terminated during a forceful stop.
  • Fixed issue with lxc query that returned an EOF error for empty files.
  • Fixed issue that was causing all profile info from a project to be added to instance exports. Now only profile info for the profiles the instance is using are added to the export backup.yaml file.
  • Fixed issue with concurrent snapshot operations causing errors when updating the backup.yaml file in the parent instance.
  • Fixed issue where the incorrect struct type was being returned from the /1.0/storage-pools/<pool>/buckets/<bucket>/key/<key>, it now returns the api.StorageBucketKey type.
  • Fixed issue with instance creation operation timeout when the host system I/O is slow and image unpack takes longer than the default 30s operation timeout. The operation timeout on instance creation is now removed.
  • Skip DHCP and OVN IP range overlap check when DHCP is disabled on bridge networks. If the network config key {ipv4,ipv6}.ovn.ranges was set, LXD was previously checking if these ranges overlap with configured {ipv4,ipv6}.dhcp.ranges. This led to an erroneous validation of DHCP ranges if {ipv4,ipv6}.dhcp=false.
  • Fixed issue with VMs not starting with bridged, ovn, routed and p2p NICs when using QEMU >= 7.2. This disables the vhost-net acceleration, which was previously generating a warning but subsequently started causing an assert crash in QEMU 7.2 and above. It is unlikely that disabling the vhost acceleration will cause a performance regression because the warnings meant it was not working previously anyway. We intend to enable the vhost accelerator in the future.

LXC

Bug fixes:

  • Backported fix for CVE-2022-47952 to the LXC 4.0 branch.
  • Fixed stuck I/O in mainloop when using io_uring.
  • Renamed functions which clash with libsystemd as when statically linking against both liblxc and libsystemd, some function names conflict.

LXD Charm

Improvements:

  • Make network and storage pool creation optional by adding lxd-init-network and lxd-init-storage config keys.

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 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.

  • 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

  • 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

  • Nothing to report this week
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