Updates procedure for xfs.

kubernetes/resize-lvm-pv.md

@@ -17,7 +17,7 @@ Then on each node:
 ls -lat $PATH
 ... /mnt/small/vol_4 -> /dev/data-1/small-4
 lvextend -L 7G /dev/data-1/small-4
-resize2fs /dev/data-1/small-4
+fsadm resize /dev/data-1/small-4
 ```
 
 And voila!