working

weed/command/mount.go

@@ -26,6 +26,8 @@ type MountOptions struct {
 	uidMap             *string
 	gidMap             *string
 	readOnly           *bool
+	debug              *bool
+	debugPort          *int
 }
 
 var (
@@ -57,6 +59,8 @@ func init() {
 	mountOptions.uidMap = cmdMount.Flag.String("map.uid", "", "map local uid to uid on filer, comma-separated <local_uid>:<filer_uid>")
 	mountOptions.gidMap = cmdMount.Flag.String("map.gid", "", "map local gid to gid on filer, comma-separated <local_gid>:<filer_gid>")
 	mountOptions.readOnly = cmdMount.Flag.Bool("readOnly", false, "read only")
+	mountOptions.debug = cmdMount.Flag.Bool("debug", false, "serves runtime profiling data, e.g., http://localhost:<debug.port>/debug/pprof/goroutine?debug=2")
+	mountOptions.debugPort = cmdMount.Flag.Int("debug.port", 6061, "http port for debugging")
 
 	mountCpuProfile = cmdMount.Flag.String("cpuprofile", "", "cpu profile output file")
 	mountMemProfile = cmdMount.Flag.String("memprofile", "", "memory profile output file")

weed/command/mount_std.go

@@ -6,6 +6,7 @@ package command
 import (
 	"context"
 	"fmt"
+	"net/http"
 	"os"
 	"os/user"
 	"path"
@@ -34,6 +35,10 @@ import (
 
 func runMount(cmd *Command, args []string) bool {
 
+	if *mountOptions.debug {
+		go http.ListenAndServe(fmt.Sprintf(":%d", *mountOptions.debugPort), nil)
+	}
+
 	grace.SetupProfiling(*mountCpuProfile, *mountMemProfile)
 	if *mountReadRetryTime < time.Second {
 		*mountReadRetryTime = time.Second