fix volume ls filter driver

Signed-off-by: allencloud <allen.sun@daocloud.io>

daemon/list.go

@@ -623,7 +623,7 @@ func (daemon *Daemon) filterVolumes(vols []volume.Volume, filter filters.Args) (
 			}
 		}
 		if filter.Include("driver") {
-			if !filter.Match("driver", vol.DriverName()) {
+			if !filter.ExactMatch("driver", vol.DriverName()) {
 				continue
 			}
 		}

docs/reference/commandline/volume_ls.md

@@ -76,9 +76,9 @@ local               rosemary
 
 ### driver
 
-The `driver` filter matches on all or part of a volume's driver name.
+The `driver` filter matches volumes based on their driver.
 
-The following filter matches all volumes with a driver name containing the `local` string.
+The following example matches volumes that are created with the `local` driver:
 
 ```bash
 $ docker volume ls -f driver=local

integration-cli/docker_cli_volume_test.go

@@ -184,19 +184,6 @@ func (s *DockerSuite) TestVolumeCLILsFilterDangling(c *check.C) {
 	c.Assert(out, check.Not(checker.Contains), "testnotinuse1\n", check.Commentf("expected volume 'testnotinuse1' in output"))
 	c.Assert(out, checker.Contains, "testisinuse1\n", check.Commentf("execpeted volume 'testisinuse1' in output"))
 	c.Assert(out, checker.Contains, "testisinuse2\n", check.Commentf("expected volume 'testisinuse2' in output"))
-
-	out, _ = dockerCmd(c, "volume", "ls", "--filter", "driver=invalidDriver")
-	outArr := strings.Split(strings.TrimSpace(out), "\n")
-	c.Assert(len(outArr), check.Equals, 1, check.Commentf("%s\n", out))
-
-	out, _ = dockerCmd(c, "volume", "ls", "--filter", "driver=local")
-	outArr = strings.Split(strings.TrimSpace(out), "\n")
-	c.Assert(len(outArr), check.Equals, 4, check.Commentf("\n%s", out))
-
-	out, _ = dockerCmd(c, "volume", "ls", "--filter", "driver=loc")
-	outArr = strings.Split(strings.TrimSpace(out), "\n")
-	c.Assert(len(outArr), check.Equals, 4, check.Commentf("\n%s", out))
-
 }
 
 func (s *DockerSuite) TestVolumeCLILsErrorWithInvalidFilterName(c *check.C) {
@@ -377,6 +364,37 @@ func (s *DockerSuite) TestVolumeCLILsFilterLabels(c *check.C) {
 	c.Assert(len(outArr), check.Equals, 1, check.Commentf("\n%s", out))
 }
 
+func (s *DockerSuite) TestVolumeCLILsFilterDrivers(c *check.C) {
+	// using default volume driver local to create volumes
+	testVol1 := "testvol-1"
+	out, _, err := dockerCmdWithError("volume", "create", testVol1)
+	c.Assert(err, check.IsNil)
+
+	testVol2 := "testvol-2"
+	out, _, err = dockerCmdWithError("volume", "create", testVol2)
+	c.Assert(err, check.IsNil)
+
+	// filter with driver=local
+	out, _ = dockerCmd(c, "volume", "ls", "--filter", "driver=local")
+	c.Assert(out, checker.Contains, "testvol-1\n", check.Commentf("expected volume 'testvol-1' in output"))
+	c.Assert(out, checker.Contains, "testvol-2\n", check.Commentf("expected volume 'testvol-2' in output"))
+
+	// filter with driver=invaliddriver
+	out, _ = dockerCmd(c, "volume", "ls", "--filter", "driver=invaliddriver")
+	outArr := strings.Split(strings.TrimSpace(out), "\n")
+	c.Assert(len(outArr), check.Equals, 1, check.Commentf("\n%s", out))
+
+	// filter with driver=loca
+	out, _ = dockerCmd(c, "volume", "ls", "--filter", "driver=loca")
+	outArr = strings.Split(strings.TrimSpace(out), "\n")
+	c.Assert(len(outArr), check.Equals, 1, check.Commentf("\n%s", out))
+
+	// filter with driver=
+	out, _ = dockerCmd(c, "volume", "ls", "--filter", "driver=")
+	outArr = strings.Split(strings.TrimSpace(out), "\n")
+	c.Assert(len(outArr), check.Equals, 1, check.Commentf("\n%s", out))
+}
+
 func (s *DockerSuite) TestVolumeCLIRmForceUsage(c *check.C) {
 	out, _ := dockerCmd(c, "volume", "create")
 	id := strings.TrimSpace(out)