fix daemon 's host flag

cmd/daemon.go

@@ -23,13 +23,15 @@ import (
 	"strings"
 	"syscall"
 
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+
 	"github.com/gostor/gotgt/pkg/apiserver"
 	"github.com/gostor/gotgt/pkg/config"
 	_ "github.com/gostor/gotgt/pkg/port/iscsit"
 	"github.com/gostor/gotgt/pkg/scsi"
 	_ "github.com/gostor/gotgt/pkg/scsi/backingstore"
-	log "github.com/sirupsen/logrus"
-	"github.com/spf13/cobra"
 )
 
 func newDaemonCommand() *cobra.Command {
@@ -41,7 +43,11 @@ func newDaemonCommand() *cobra.Command {
 		Use:   "daemon",
 		Short: "Setup a daemon",
 		Long:  `Setup the Gotgt's daemon`,
+		PreRun: func(cmd *cobra.Command, args []string) {
+			viper.BindPFlags(cmd.Flags())
+		},
 		RunE: func(cmd *cobra.Command, args []string) error {
+			host = viper.GetString("host")
 			return createDaemon(host, driver, logLevel, blockMultipleHosts)
 		},
 	}

pkg/port/iscsit/iscsid.go

@@ -339,7 +339,7 @@ func (s *ISCSITargetDriver) rxHandler(conn *iscsiConnection) {
 			log.Debug("rx handler: IOSTATE_RX_BHS")
 			length, err = conn.readData(buf)
 			if err != nil {
-				log.Error("read BHS failed:", err)
+				log.Error("read BHS failed: ", err)
 				conn.state = CONN_STATE_CLOSE
 				return
 			}

pkg/scsi/backingstore/common.go

@@ -21,10 +21,11 @@ import (
 	"io"
 	"os"
 
+	log "github.com/sirupsen/logrus"
+
 	"github.com/gostor/gotgt/pkg/api"
 	"github.com/gostor/gotgt/pkg/scsi"
 	"github.com/gostor/gotgt/pkg/util"
-	log "github.com/sirupsen/logrus"
 )
 
 const (
@@ -51,13 +52,10 @@ func new() (api.BackingStore, error) {
 }
 
 func (bs *FileBackingStore) Open(dev *api.SCSILu, path string) error {
+	var mode os.FileMode
 
-	var (
+	finfo, err := os.Stat(path)
-		mode  os.FileMode
+	if err != nil {
-		finfo os.FileInfo
-	)
-
-	if finfo, err := os.Stat(path); err != nil {
 		return err
 	} else {
 		// determine file type
@@ -75,6 +73,9 @@ func (bs *FileBackingStore) Open(dev *api.SCSILu, path string) error {
 			}
 			bs.DataSize = uint64(pos)
 		} else {
+			if finfo == nil {
+				log.Infof("finfo is nil")
+			}
 			bs.DataSize = uint64(finfo.Size())
 		}
 	}