[libvirt] [PATCH 5/5] util: vircgroupv2: don't error out if enabling controller fails
Currently CPU controller cannot be enabled if there is any real-time
task running and is assigned to non-root cgroup which is the case on
several distributions with graphical environment.
Instead of erroring out treat it as the controller is not available.
Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com>
---
src/util/vircgroupv2.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/src/util/vircgroupv2.c b/src/util/vircgroupv2.c
index 6eeebe2230..9cc64d64d2 100644
--- a/src/util/vircgroupv2.c
+++ b/src/util/vircgroupv2.c
@@ -425,8 +425,13 @@ virCgroupV2MakeGroup(virCgroupPtr parent ATTRIBUTE_UNUSED,
if (i == VIR_CGROUP_CONTROLLER_CPUACCT)
continue;
- if (virCgroupV2EnableController(parent, i) < 0)
- return -1;
+ if (virCgroupV2EnableController(parent, i) < 0) {
+ virResetLastError();
+ VIR_DEBUG("failed to enable '%s' controller,
skipping",
+ virCgroupV2ControllerTypeToString(i));
+ group->unified.controllers &= ~(1 << i);
+ continue;
+ }
}
}
}
--
2.21.0