** Also affects: systemd (Ubuntu)
Importance: Undecided
Status: New
** Summary changed:
- cgroup v2 is not fully supported yet, proceeding with partial confinement
+ Switch to "unified" cgroup hierarchy (cgroupv2)
** Changed in: systemd (Ubuntu)
Importance: Undecided => Wishlist
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https://bugs.launchpad.net/bugs/1850667
Title:
Switch to "unified" cgroup hierarchy (cgroupv2)
Status in lxc:
Fix Released
Status in lxd:
Fix Released
Status in snapd:
Confirmed
Status in docker.io package in Ubuntu:
Confirmed
Status in lxc package in Ubuntu:
Fix Released
Status in snapd package in Ubuntu:
In Progress
Status in systemd package in Ubuntu:
New
Status in lxc package in Debian:
Fix Released
Status in systemd package in Debian:
Fix Released
Bug description:
Systemd upstream switched the default cgroup hierarchy to unified with
v243. This change is reverted by the Ubuntu systemd packages, but as
unified is the way to go per upstream support should be added to all
relevant Ubuntu packges (and snaps):
https://github.com/systemd/systemd/blob/v243/NEWS#L56
* systemd now defaults to the "unified" cgroup hierarchy setup during
build-time, i.e. -Ddefault-hierarchy=unified is now the build-time
default. Previously, -Ddefault-hierarchy=hybrid was the default.
This
change reflects the fact that cgroupsv2 support has matured
substantially in both systemd and in the kernel, and is clearly the
way forward. Downstream production distributions might want to
continue to use -Ddefault-hierarchy=hybrid (or even =legacy) for
their builds as unfortunately the popular container managers have
not
caught up with the kernel API changes.
Systemd is rebuilt using the new default and is available from the following
PPA for testing:
https://launchpad.net/~rbalint/+archive/ubuntu/systemd-unified-cgh
The autopkgtest results against other packges are available here:
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac
/autopkgtest-eoan-rbalint-systemd-unified-cgh/?format=plain
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac
/autopkgtest-focal-rbalint-systemd-unified-cgh/?format=plain
lxc autopkgtest failing:
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac
/autopkgtest-eoan-rbalint-systemd-unified-
cgh/eoan/amd64/d/docker.io/20191030_155944_2331e@/log.gz
snapd autopkgtest failing:
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac
/autopkgtest-eoan-rbalint-systemd-unified-
cgh/eoan/amd64/s/snapd/20191030_161354_94b26@/log.gz
docker.io autopkgtest failing:
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac
/autopkgtest-eoan-rbalint-systemd-unified-
cgh/eoan/amd64/d/docker.io/20191030_155944_2331e@/log.gz
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