Add commands to modify vm cpu limits

pages/02.linux/xcp-ng/xe-cli/default.en.md

@@ -1,15 +1,36 @@
 ---
-title: 'xe CLI'
+title: "xe CLI"
 visible: true
 ---
 
 [toc]
+
 ## VM Operations
+
 Show running VMs  
 `# xe vm-list --multiple power-state=running`
 
 Poweroff all VMs currently running  
 `# xe vm-shutdown --multiple power-state=running`
 
+Start VM  
+`# xe vm-start uuid=<vm uuid>`
+
 ## Snapshot management
-*TODO*  
+
+_TODO_
+
+## VM Limits
+
+Check current limits  
+`# xe vm-param-get uuid=<vm uuid> param-name=<parameter>`
+
+Parameters:
+
+```
+VCPUs-max: Maximum number of CPU cores
+VCPUs-at-startup: Number of CPU cores initially assigned
+```
+
+Set Limits  
+`# xe vm-param-set uuid=<vm uuid> <parameter>=<value>`