version bump, README update

README.md

@@ -6,7 +6,13 @@ Support iocage jails, so they can coexist.
 Gocage is meant to be a complete jail management tool with network, snapshots, jail cloning support and a web interface. This is the hypothetic future.  
 Gocage can handle multiple datastores, so you can have jails on HDD storage and jails on SSD storage.  
 
-
+From v0.33b, due to multi ZFS pool support, gocage is no longer 100% compatible with iocage.  
+Zfs datasets now should be specified with the ZFS pool. e.g. :  
+<code>
+Config.Jail_zfs = 1
+Config.Jail_zfs_dataset = myzfspool/poudriere
+Config.Jail_zfs_mountpoint = none
+</code>
 
 List jails
 ----------

cmd/root.go

@@ -14,7 +14,7 @@ import (
 )
 
 const (
-	gVersion = "0.33a"
+	gVersion = "0.33b"
 	
 	// TODO : Get from $jail_zpool/defaults.json
 	MIN_DYN_DEVFS_RULESET = 1000
@@ -518,10 +518,8 @@ func WriteConfigToDisk(jailName string, changeauto bool, forceWrite bool) {
 					fmt.Printf("ERROR marshaling config: %s\n", err.Error())
 				}
 				
-				fmt.Printf("DEBUG: Will write config to disk, with content:\n")
-				fmt.Printf(string(marshaled))
-				
-				
+				//fmt.Printf("DEBUG: Will write config to disk, with content:\n")
+				//fmt.Printf(string(marshaled))
 				
 				if os.WriteFile(j.ConfigPath, []byte(marshaled), 0644); err != nil {
 					fmt.Printf("Error writing config file %s: %v\n", j.ConfigPath, err)

cmd/start.go

@@ -190,24 +190,26 @@ func prepareJailedZfsDatasets(jail *Jail) error {
 		}
 		for _, d := range strings.Split(jail.Config.Jail_zfs_dataset, " ") {
 			// Check if dataset exist, create if necessary
-			cmd := fmt.Sprintf("zfs get -H creation %s/%s", jail.Zpool, d)
+			// Support jailing datasets on differents pools : dataset should be specified with pool name
+			cmd := fmt.Sprintf("zfs get -H creation %s", d)
 			out, err := executeCommand(cmd)
 			if err != nil {
 				if strings.HasSuffix(out, "dataset does not exist") {
-					cmd = fmt.Sprintf("zfs create -o compression=lz4 -o mountpoint=none %s/%s", jail.Zpool, d)
+			        // Support jailing datasets on differents pools : dataset should be specified with pool name
+					cmd = fmt.Sprintf("zfs create -o compression=lz4 -o mountpoint=none %s", d)
 					_, err = executeCommand(cmd)
 					if err != nil {
-						return errors.New(fmt.Sprintf("Error creating dataset %s/%s: %s", jail.Zpool, d, err.Error()))
+						return errors.New(fmt.Sprintf("Error creating dataset %s: %s", d, err.Error()))
 					}
 				} else {
 					return errors.New(fmt.Sprintf("Error getting zfs dataset %s: %s", d, err.Error()))
 				}
 			}
 
-			cmd = fmt.Sprintf("zfs set jailed=on %s/%s", jail.Zpool, d)
+			cmd = fmt.Sprintf("zfs set jailed=on %s", d)
 			out, err = executeCommand(cmd)
 			if err != nil {
-				return errors.New(fmt.Sprintf("Error executing \"zfs set jailed=on %s/%s\": %s", jail.Zpool, d, err.Error()))
+				return errors.New(fmt.Sprintf("Error executing \"zfs set jailed=on %s\": %s", d, err.Error()))
 			}
 		}
 	}
@@ -218,27 +220,27 @@ func jailZfsDatasets(jail *Jail) error {
 	if jail.Config.Jail_zfs > 0 {
 		for _, d := range strings.Split(jail.Config.Jail_zfs_dataset, " ") {
 			// Jail dataset
-			cmd := fmt.Sprintf("zfs jail %d %s/%s", jail.JID, jail.Zpool, d)
+			// Support jailing datasets on differents pools : dataset should be specified with pool name
+			cmd := fmt.Sprintf("zfs jail %d %s", jail.JID, d)
 			out, err := executeCommand(cmd)
 			if err != nil {
 				return errors.New(fmt.Sprintf("Error jailling zfs dataset %s: %v: out", d, err, out))
 			}
 			
 			// Mount from inside jail if mountpoint is set
-			cmd = fmt.Sprintf("zfs get -H -o value mountpoint %s/%s", jail.Zpool, d)
+			cmd = fmt.Sprintf("zfs get -H -o value mountpoint %s", d)
 			out, err = executeCommand(cmd)
 			if err != nil {
-				return errors.New(fmt.Sprintf("Error getting zfs dataset %s/%s mountpoint: %v: %s", jail.Zpool, d, err, out))
+				return errors.New(fmt.Sprintf("Error getting zfs dataset %s mountpoint: %v: %s", d, err, out))
 			}
 			if len(out) > 0 && out != "-" && (false == strings.EqualFold(out, "none")) {
-				//cmd = fmt.Sprintf("zfs mount %s/%s", jail.Zpool, d)
-				cmd = fmt.Sprintf("zfs mount -a")
+				// Should we "mount -a" ? cmd = fmt.Sprintf("zfs mount -a")
+				cmd = fmt.Sprintf("zfs mount %s", d)
 				out, err = executeCommandInJail(jail, cmd)
 				if err != nil {
 					// If already mounted, continue processing
 					if ! strings.HasSuffix(out, "filesystem already mounted\n") {
-						//return errors.New(fmt.Sprintf("Error mounting zfs dataset %s/%s: %v: %s", jail.Zpool, d, err, out))
-						return errors.New(fmt.Sprintf("Error executing \"zfs mount -a\" from inside jail: %v: %s", err, out))
+						return errors.New(fmt.Sprintf("Error mounting zfs dataset %s from inside jail: %v: %s", d, err, out))
 					}
 				}
 			}
@@ -1011,7 +1013,7 @@ func generateResolvConf(jail *Jail) error {
 		for _, l := range strings.Split(jail.Config.Resolver, ";") {
 			f.WriteString(fmt.Sprintf("%s\n", l))
 		}
-	} else if jail.Config.Resolver == "none" {
+	} else if jail.Config.Resolver == "none" || jail.Config.Resolver == "/etc/resolv.conf" {
 		read, err := ioutil.ReadFile("/etc/resolv.conf")
 		if err != nil {
 			return fmt.Errorf("Error opening /etc/resolv.conf: %v", err)

cmd/stop.go

@@ -50,10 +50,10 @@ func umountAndUnjailZFS(jail *Jail) error {
 
 	for _, zd := range ds {
 		// 1. Get dataset and childs
-		cmd := fmt.Sprintf("zfs list -H -r -o name -S name %s/%s", jail.Zpool, zd)
+		cmd := fmt.Sprintf("zfs list -H -r -o name -S name %s", zd)
 		out, err := executeCommand(cmd)
 		if err != nil {
-			fmt.Printf(fmt.Sprintf("ERROR listing dataset %s/%s\n", jail.Zpool, zd))
+			fmt.Printf(fmt.Sprintf("ERROR listing dataset %s\n", zd))
 			os.Exit(1)
 		}
 		for _, c := range strings.Split(out, "\n") {
@@ -71,10 +71,10 @@ func umountAndUnjailZFS(jail *Jail) error {
 	}
 
 	// 2. Unjail dataset from the host
-	cmd := fmt.Sprintf("zfs unjail %s %s/%s", jail.InternalName, jail.Zpool, ds[len(ds)-1])
+	cmd := fmt.Sprintf("zfs unjail %s %s", jail.InternalName, ds[len(ds)-1])
 	_, err := executeCommand(cmd)
 	if err != nil {
-		fmt.Printf("ERROR unjailing %s/%s: %s\n", jail.Zpool, ds[len(ds)-1], err.Error())
+		fmt.Printf("ERROR unjailing %s: %s\n", ds[len(ds)-1], err.Error())
 		return err
 	}