Here are some xm and virsh commands for creating, managing, and troubleshooting xen virtual machines.

Staring and Stopping VMs

  • xm create     – Create a domain based on config file
  • xm destroy    – Terminate a domain immediately
  • xm pause      – Pause execution of a domain
  • xm reboot     – Reboot a domain
  • xm shutdown – Shutdown a domain
  • xm save       – Save a domain state to restore later
  • xm restore    – Restore a domain from a saved state

Status monitoring

  • xm uptime        – Displays uptime for a domain
  • xm top            – Monitors a host and its domains in real time
  • xm list             – Displays domain information
  • xm info            – Displays host information
  • xm vcpu-list     – Lists domain virtual processors
  • xm network-list – List virtual network interfaces for a domain.
  • virsh nodeinfo   – Gives basic information about the node.
  • virsh cpuinfo

Troubleshooting

  • xm console     – Attaches to a domain console
  • xm dump-core – Dumps core of a specific domain
  • xm dmesg       – Reads and/or clears the xend daemon’s message buffer
  • xm log            – Gives Xend log
  • virsh dominfo   – Returns basic information about the domain
  • virsh dumpxml  – Gives domain informations as an XML.

Performance tuning

  • xm mem-max – Sets the maximum amount of memory for a domain
  • xm mem-set  – Sets the current memory usage for a domain
  • xm vcpu-set  – Sets the number of active processors for a domain

Other commands

  • xm rename   – Renames a domain
  • xm sysrq      – Sends a system request to a domain
  • xm block-list – Lists virtual block devices for a domain
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