guix/gnu/packages/patches/libvirt-create-machine-cgroup.patch

From 9ca0b2955edea162b255b428e493cd8ffac52167 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miguel=20=C3=81ngel=20Arruga=20Vivas?=
 <rosen644835@gmail.com>
Date: Fri, 1 Nov 2019 17:29:00 +0100
Subject: [PATCH] vircgroup: Ensure /machine group is associated with its
 parent.

Call first virCgroupNew on the parent group virCgroupNewPartition if
it is available on before the creation of the child group.  This
ensures that the creation of a first level group on the unified
architecture, as the check at virCgroupV2ParseControllersFile as the
parent file is there.

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1760233
---
 src/util/vircgroup.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
index b46f20abfd..33c61f2d45 100644
--- a/src/util/vircgroup.c
+++ b/src/util/vircgroup.c
@@ -855,9 +855,6 @@ virCgroupNewPartition(const char *path,
     if (virCgroupSetPartitionSuffix(path, &newPath) < 0)
         goto cleanup;
 
-    if (virCgroupNew(-1, newPath, NULL, controllers, group) < 0)
-        goto cleanup;
-
     if (STRNEQ(newPath, "/")) {
         char *tmp;
         parentPath = g_strdup(newPath);
@@ -868,7 +865,12 @@ virCgroupNewPartition(const char *path,
 
         if (virCgroupNew(-1, parentPath, NULL, controllers, &parent) < 0)
             goto cleanup;
+    }
 
+    if (virCgroupNew(-1, newPath, parent, controllers, group) < 0)
+        goto cleanup;
+
+    if (parent) {
         if (virCgroupMakeGroup(parent, *group, create, VIR_CGROUP_NONE) < 0)
             goto cleanup;
     }
-- 
2.23.0