podman cgroup enhancement

currently, setting any sort of resource limit in a pod does nothing. With the newly refactored creation process in c/common, podman ca now set resources at a pod level
meaning that resource related flags can now be exposed to podman pod create.

cgroupfs and systemd are both supported with varying completion. cgroupfs is a much simpler process and one that is virtually complete for all resource types, the flags now just need to be added. systemd on the other hand
has to be handeled via the dbus api meaning that the limits need to be passed as recognized properties to systemd. The properties added so far are the ones that podman pod create supports as well as `cpuset-mems` as this will
be the next flag I work on.

Signed-off-by: Charlie Doern <cdoern@redhat.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/test/system/200-pod.bats b/test/system/200-pod.bats
index 404ad67ec..f597c0e0a 100644
--- a/test/system/200-pod.bats
+++ b/test/system/200-pod.bats
@@ -472,4 +472,30 @@ spec:
     run_podman pod rm $name-pod
 }
 
+@test "pod resource limits" {
+    skip_if_remote "resource limits only implemented on non-remote"
+    if is_rootless; then
+        skip "only meaningful for rootful"
+    fi
+
+    local name1="resources1"
+    run_podman --cgroup-manager=systemd pod create --name=$name1 --cpus=5
+    run_podman  --cgroup-manager=systemd pod start $name1
+    run_podman pod inspect --format '{{.CgroupPath}}' $name1
+    local path1="$output"
+    local actual1=$(< /sys/fs/cgroup/$path1/cpu.max)
+    is "$actual1" "500000 100000" "resource limits set properly"
+    run_podman pod --cgroup-manager=systemd rm -f $name1
+
+    local name2="resources2"
+    run_podman --cgroup-manager=cgroupfs pod create --cpus=5 --name=$name2
+    run_podman --cgroup-manager=cgroupfs pod start $name2
+    run_podman pod inspect --format '{{.CgroupPath}}' $name2
+    local path2="$output"
+    local actual2=$(< /sys/fs/cgroup/$path2/cpu.max)
+    is "$actual2" "500000 100000" "resource limits set properly"
+    run_podman --cgroup-manager=cgroupfs pod rm $name2
+
+}
+
 # vim: filetype=sh