Here is an 'sudo systemd-analyze plot > ./1871148-vm-no-varlib-
mount.svg' on a focal VM that reports the following critical-chain:
$ sudo systemd-analyze critical-chain apparmor.service
The time when unit became active or started is printed after the "@" character.
The time the unit took to start is printed after the "+" character.
apparmor.service +222ms
└─local-fs.target @2.562s
└─run-user-122.mount @4.834s
└─swap.target @1.687s
└─dev-disk-by\x2duuid-f5ea22a0\x2de078\x2d4d8e\x2d9412\x2d1fad2171a080.swap
@1.663s +24ms
└─dev-disk-by\x2duuid-f5ea22a0\x2de078\x2d4d8e\x2d9412\x2d1fad2171a080.device
@1.662s
Note that var.lib.mount is *not* listed in the critical chain. In the
svg, we see:
zfs-load-module.service (3ms)
zfs-import-cache.service (268ms)
zfs-import.target
...
var-lib.mount (156ms)
...
zfs-volume-wait.service (235ms)
...
zfs-volumes.target
...
zfs-mount.service (66ms)
local-fs.target
apparmor.service (222ms)
...
Maybe everything is fine but critical-chain has a bug?
** Attachment added: "1871148-vm-no-varlib-mount.svg"
https://bugs.launchpad.net/apparmor/+bug/1871148/+attachment/5349686/+files/1871148-vm-no-varlib-mount.svg
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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to apparmor in Ubuntu.
https://bugs.launchpad.net/bugs/1871148
Title:
services start before apparmor profiles are loaded
Status in AppArmor:
Invalid
Status in apparmor package in Ubuntu:
Fix Released
Status in zsys package in Ubuntu:
New
Status in apparmor source package in Focal:
Fix Released
Status in zsys source package in Focal:
New
Bug description:
Per discussion with Zyga in #snapd on Freenode, I have hit a race
condition where services are being started by the system before
apparmor has been started. I have a complete log of my system showing
the effect somewhere within at https://paste.ubuntu.com/p/Jyx6gfFc3q/.
Restarting apparmor using `sudo systemctl restart apparmor` is enough
to bring installed snaps back to full functionality.
Previously, when running any snap I would receive the following in the
terminal:
---
cannot change profile for the next exec call: No such file or directory
snap-update-ns failed with code 1: File exists
---
Updated to add for Jamie:
$ snap version
snap 2.44.2+20.04
snapd 2.44.2+20.04
series 16
ubuntu 20.04
kernel 5.4.0-21-generic
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