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`snapd` 包在 Ubuntu 20.04 LXD 容器内升级失败

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`snapd` 包在 Ubuntu 20.04 LXD 容器内升级失败

我正在通过 LXD 启动 Ubuntu 20.04，但是当我进入容器使用它时，它无法运行：

apt update
apt full-upgrade

出现错误时停止Setting up snapd (2.47.1+20.04) ...：

Setting up snapd (2.47.1+20.04) ...
Installing new version of config file /etc/apparmor.d/usr.lib.snapd.snap-confine.real ...
snapd.failure.service is a disabled or a static unit, not starting it.
snapd.snap-repair.service is a disabled or a static unit, not starting it.

日志：

Nov  1 14:04:01 cosstor-1 snapd[18306]: handlers.go:704: expected snap "snapd" revision 9607 to be mounted but is not
Nov  1 14:04:11 cosstor-1 snapd[18306]: taskrunner.go:271: [change 5 "Mount snap \"snapd\" (9607)" task] failed: cannot proceed, expected snap "snapd" revision 9607 to be mounted but is not
Nov  1 14:04:11 cosstor-1 snapd[18306]: handlers.go:495: Reported install problem for "snapd" as already-reported

知道该做什么吗？

在 Ubuntu 20.04 容器中，我尝试首先删除该snapd包（因为我不需要它），但也失败了，错误：apt purge snapd -y

Removing snap core18 and revision 1885
rm: cannot remove '/snap/core18/1885': Device or resource busy
dpkg: error processing package snapd (--purge):
 installed snapd package post-removal script subprocess returned error exit status 1
Errors were encountered while processing:
 snapd
E: Sub-process /usr/bin/dpkg returned an error code (1)

该怎么办？:-P

https://cloud-images.ubuntu.com/releases是否有来自(protocol: )的 Ubuntu 映像simplestreams默认不附带“snapd”？或者可能来自其他来源？

编辑 1：找到了解决方法！apt-mark hold snapd...

编辑 2：我有其他 LXD 主机，其中相同的 Ubunt 20.04 容器映像显然可以正常工作，我刚刚检查过它，并且软件包snapd已在那里更新！一切都是 Ubuntu 20.04，已完全升级（裸机、容器、QEMU VM）...

编辑3：面临类似问题的人：https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1878674

我快要放弃 Ubuntu 并回归 Debian 了！:-@

谢谢，蒂亚戈

答案1

改用Ubuntu 最小 LXD 图像。

为此，请添加适当的偏僻的对于 Ubuntu 最小 LXD 映像：

lxc remote add --protocol simplestreams ubuntu-minimal https://cloud-images.ubuntu.com/minimal/releases/

要查看可用的图像，请运行

$ lxc image list ubuntu-minimal:            # all container images, from 16.04 to 20.10.
$ lxc image list ubuntu-minimal:20.04   # view just the Ubuntu 20.04 container images.
$ lxc image list ubuntu-minimal:focal    # ditto.
$ lxc image info ubuntu-minimal:20.04   # get full info about the container image.

阅读更多https://discuss.linuxcontainers.org/t/ubuntu-20-04-images-are-available/7556和https://blog.simos.info/a-closer-look-at-minimal-ubuntu-for-lxd/

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