[shell] add admin noLock for balance (#6209)

add admin noLock for balance

weed/shell/commands.go

@@ -35,6 +35,7 @@ type CommandEnv struct {
 	MasterClient *wdclient.MasterClient
 	option       *ShellOptions
 	locker       *exclusive_locks.ExclusiveLocker
+	noLock       bool
 }
 
 func NewCommandEnv(options *ShellOptions) *CommandEnv {
@@ -42,6 +43,7 @@ func NewCommandEnv(options *ShellOptions) *CommandEnv {
 		env:          make(map[string]string),
 		MasterClient: wdclient.NewMasterClient(options.GrpcDialOption, *options.FilerGroup, pb.AdminShellClient, "", "", "", *pb.ServerAddresses(*options.Masters).ToServiceDiscovery()),
 		option:       options,
+		noLock:       false,
 	}
 	ce.locker = exclusive_locks.NewExclusiveLocker(ce.MasterClient, "shell")
 	return ce
@@ -79,6 +81,9 @@ func (ce *CommandEnv) isLocked() bool {
 	if ce == nil {
 		return true
 	}
+	if ce.noLock {
+		return false
+	}
 	return ce.locker.IsLocked()
 }