improve worm support (#5983)

* improve worm support

Signed-off-by: lou <alex1988@outlook.com>

* worm mode in filer

Signed-off-by: lou <alex1988@outlook.com>

* update after review

Signed-off-by: lou <alex1988@outlook.com>

* update after review

Signed-off-by: lou <alex1988@outlook.com>

* move to fs configure

Signed-off-by: lou <alex1988@outlook.com>

* remove flag

Signed-off-by: lou <alex1988@outlook.com>

* update after review

Signed-off-by: lou <alex1988@outlook.com>

* support worm hardlink

Signed-off-by: lou <alex1988@outlook.com>

* update after review

Signed-off-by: lou <alex1988@outlook.com>

* typo

Signed-off-by: lou <alex1988@outlook.com>

* sync filer conf

Signed-off-by: lou <alex1988@outlook.com>

---------

Signed-off-by: lou <alex1988@outlook.com>

weed/shell/command_fs_configure.go

@@ -56,6 +56,7 @@ func (c *commandFsConfigure) Do(args []string, commandEnv *CommandEnv, writer io
 	diskType := fsConfigureCommand.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	fsync := fsConfigureCommand.Bool("fsync", false, "fsync for the writes")
 	isReadOnly := fsConfigureCommand.Bool("readOnly", false, "disable writes")
+	worm := fsConfigureCommand.Bool("worm", false, "worm mode, If true, a file can only be changed once, after which it becomes readonly and undeletable, see https://en.wikipedia.org/wiki/Write_once_read_many")
 	maxFileNameLength := fsConfigureCommand.Uint("maxFileNameLength", 0, "file name length limits in bytes for compatibility with Unix-based systems")
 	dataCenter := fsConfigureCommand.String("dataCenter", "", "assign writes to this dataCenter")
 	rack := fsConfigureCommand.String("rack", "", "assign writes to this rack")
@@ -87,6 +88,7 @@ func (c *commandFsConfigure) Do(args []string, commandEnv *CommandEnv, writer io
 			DataCenter:        *dataCenter,
 			Rack:              *rack,
 			DataNode:          *dataNode,
+			Worm:              *worm,
 		}
 
 		// check collection