Warn if podman stop timeout expires that sigkill was sent

Also fix podman man page to appropriately note that we run
with log-level warn.

Note: the Warning message will not come to podman-remote.
It would be difficult to plumb, and not really worth the effort.

Fixes: containers#11854

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

docs/source/markdown/podman.1.md

@@ -82,7 +82,7 @@ Remote connections use local containers.conf for default.
 
 #### **--log-level**=*level*
 
-Log messages above specified level: debug, info, warn, error (default), fatal or panic (default: "error")
+Log messages above specified level: debug, info, warn, error (default), fatal or panic (default: "warn")
 
 #### **--namespace**=*namespace*
 

libpod/oci_conmon_linux.go

@@ -441,7 +441,7 @@ func (r *ConmonOCIRuntime) StopContainer(ctr *Container, timeout uint, all bool)
 		}
 
 		if err := waitContainerStop(ctr, time.Duration(timeout)*time.Second); err != nil {
-			logrus.Infof("Timed out stopping container %s, resorting to SIGKILL: %v", ctr.ID(), err)
+			logrus.Warnf("Timed out stopping container %s, resorting to SIGKILL: %v", ctr.ID(), err)
 		} else {
 			// No error, the container is dead
 			return nil

test/e2e/stop_test.go

@@ -181,6 +181,18 @@ var _ = Describe("Podman stop", func() {
 		Expect(strings.TrimSpace(finalCtrs.OutputToString())).To(Equal(""))
 	})
 
+	It("podman stop container --timeout Warning", func() {
+		SkipIfRemote("warning will happen only on server side")
+		session := podmanTest.Podman([]string{"run", "-d", "--name", "test5", ALPINE, "sleep", "100"})
+		session.WaitWithDefaultTimeout()
+		Expect(session).Should(Exit(0))
+		session = podmanTest.Podman([]string{"stop", "--timeout", "1", "test5"})
+		session.WaitWithDefaultTimeout()
+		Expect(session).Should(Exit(0))
+		warning := session.ErrorToString()
+		Expect(warning).To(ContainSubstring("Timed out stopping container"))
+	})
+
 	It("podman stop latest containers", func() {
 		SkipIfRemote("--latest flag n/a")
 		session := podmanTest.RunTopContainer("test1")