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authorFlorian Klink <flokli@flokli.de>2020-11-17 21:54:26 +0100
committerFlorian Klink <flokli@flokli.de>2020-11-19 16:56:46 +0100
commitd22b3ed4bcd24dcc96fd9f99c75bb568bffe2a8c (patch)
tree4019622d6149592c7c771ff05996b84386ce12ea /pkgs/os-specific/linux/systemd/default.nix
parente949d758998fafbef608adcf9f54d79a6e7da4c8 (diff)
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systemd: switch to unified cgroup hierarchy by default
See https://www.redhat.com/sysadmin/fedora-31-control-group-v2 for
details on why this is desirable, and how it impacts containers.

Users that need to keep using the old cgroup hierarchy can re-enable it
by setting `systemd.unifiedCgroupHierarchy` to `false`.

Well-known candidates not supporting that hierarchy, like docker and
hidepid=… will disable it automatically.

Fixes #73800
Diffstat (limited to 'pkgs/os-specific/linux/systemd/default.nix')
-rw-r--r--pkgs/os-specific/linux/systemd/default.nix6
1 files changed, 3 insertions, 3 deletions
diff --git a/pkgs/os-specific/linux/systemd/default.nix b/pkgs/os-specific/linux/systemd/default.nix
index 85c78ce1421..084ac1da9af 100644
--- a/pkgs/os-specific/linux/systemd/default.nix
+++ b/pkgs/os-specific/linux/systemd/default.nix
@@ -281,9 +281,9 @@ stdenv.mkDerivation {
     "-Dmount-path=${utillinux}/bin/mount"
     "-Dumount-path=${utillinux}/bin/umount"
     "-Dcreate-log-dirs=false"
-    # Upstream uses cgroupsv2 by default. To support docker and other
-    # container managers we still need v1.
-    "-Ddefault-hierarchy=hybrid"
+
+    # Use cgroupsv2. This is already the upstream default, but better be explicit.
+    "-Ddefault-hierarchy=unified"
     # Upstream defaulted to disable manpages since they optimize for the much
     # more frequent development builds
     "-Dman=true"