standardize Device usage

- always control devices through the Device class
- add checks on devices
- store all used devices instead of mounted one only
- filter device by transport to keep iSCSI devices only

Author: plaffitt

example/main.go

@@ -13,7 +13,6 @@ import (
 var (
 	portals   = flag.String("portals", "192.168.1.112:3260", "Comma delimited.  Eg: 1.1.1.1,2.2.2.2")
 	iqn       = flag.String("iqn", "iqn.2010-10.org.openstack:volume-95739000-1557-44f8-9f40-e9d29fe6ec47", "")
-	multipath = flag.Bool("multipath", false, "")
 	username  = flag.String("username", "3aX7EEf3CEgvESQG75qh", "")
 	password  = flag.String("password", "eJBDC7Bt7WE3XFDq", "")
 	lun       = flag.Int("lun", 1, "")
@@ -41,7 +40,7 @@ func main() {
 
 	// You can utilize the iscsiadm calls directly if you wish, but by creating a Connector
 	// you can simplify interactions to simple calls like "Connect" and "Disconnect"
-	c := iscsi.Connector{
+	c := &iscsi.Connector{
 		// Our example uses chap
 		AuthType: "chap",
 		// List of targets must be >= 1 (>1 signals multipath/mpio)
@@ -55,8 +54,6 @@ func main() {
 			SecretsType: "chap"},
 		// Lun is the lun number the devices uses for exports
 		Lun: int32(*lun),
-		// Multipath indicates that we want to configure this connection as a multipath device
-		Multipath: *multipath,
 		// Number of times we check for device path, waiting for CheckInterval seconds inbetween each check (defaults to 10 if omitted)
 		RetryCount: 11,
 		// CheckInterval is the time in seconds to wait inbetween device path checks when logging in to a target
@@ -71,11 +68,6 @@ func main() {
 		os.Exit(1)
 	}
 
-	if path == "" {
-		log.Printf("Failed to connect, didn't receive a path, but also no error!")
-		os.Exit(1)
-	}
-
 	log.Printf("Connected device at path: %s\n", path)
 	time.Sleep(3 * time.Second)