The current LXD snap is based off the original core
base, that’s effectively a minimal Ubuntu 16.04 build.
We’ve long been planning on moving to a more recent base, core18
which is based off Ubuntu 18.04 and in the next 6 months, move again to the latest core20
base which is going to be based off Ubuntu 20.04.
The main benefit is much more recent versions of the various tools shipping the snap, including LVM, Ceph, various other filesystem and system tools as well as benefiting from the newer C library and its associated features.
The migration hasn’t been particularly easy due to hitting bugs in both snapd
itself, related to switching base snaps on running systems as well as differences in filesystem structure causing some of our confinement profiles to fail, breaking LXD. All of those have been sorted out for a few months now and we’ve successfully been running our edge
and beta
channels on core18
for a while now.
We’re doing one last update to the stable LXD snap now, still based on core
, then will merge the core18
support into the candidate
snap and keep it that way over the weekend, if nobody running candidate
reports regressions, we’ll go on with pushing it to stable
on Monday or Tuesday.
If you have some time and are using some of the less common features of the LXD snap, it’d be great if you could refresh onto beta
and help us test this.
Some of the potential area of concerns that we’d like to see confirmation on:
☒ VM support on x86_64
☒ VM support on aarch64
☒ LVM + volume resize on ext4, btrfs and xfs
☒ Open vSwitch with internal daemon
☒ Open vSwitch with external daemon
☒ nvidia-container
☒ nftables + network isolation
☒ xtables + network isolation
☒ squashfs compressed image creation
☒ squashfs compressed backups export/import
☒ criu (checkpoint/restore)
If you have a chance to test some of those, please post below the following information:
- What you tested
-
lxc info
output snap list
To switch: snap refresh lxd --beta
To switch back: snap refresh lxd --stable
Thanks!