[CentOS-virt] Virsh shutdown all command?

From: "Neil Aggarwal", Thursday, November 12, 2009 5:34 PM

> Is there a command in virsh to shutdown all domains?
> I can do one at a time, but that is untenable for a large
> number of domains.

  I use a script to shutdown my domains.  I am not always happy with 
stopping the service, which is supposed to have the effect of stopping the 
virtual machines.  I use xm and do other things, including rebooting my MS 
Windows XP VM's on a schedule, but here's the piece that just does a 
shutdown on running VM's.  I'm sure my script isn't very efficient and I'd 
appreciate any polite, constructive suggestions.  Also, since I've pulled it 
out of a script and modified it on the fly for virsh, there might be bugs.

  The debug environment var is use for verbosity.  The fake environment 
variable is used for 'faking' the run.  Setting both while debugging might 
be a good idea unless you are using a test system without any production 
virtual machines.

----------
#!/bin/bash
# file: /usr/local/sbin/vm-shutdown
# Description: shutdown active virtual machines

# Get list of active virtual machines
vmList="`virsh list | (
    while read vmID vmName vmStatus
     do
      if [ -n "$vmName" -a "$vmName" != "Name" -a "$vmName" != "Domain-0" ]
       then
        [ -z "$vmList" ] && vmList="$vmName" || vmList="$vmList $vmName"
      fi
    done
    echo $vmList )`"

# check there are some active VM's
if [ -n "$vmList" ]; then
# Shutdown VM's with verification
  for vmName in $vmList
   do
#  send initial request
    [ -n "$debug" ] && echo -n "Attempting to shutdown $vmName "
    [ -z "$fake" ] && virsh shutdown $vmName
# wait a limited time for the VM to be not running
    count=300
    while ( virsh list | grep $vmName >/dev/null ) && [ count -gt 0 ]
     do
      sleep 1
      let count=count-1
      [ -n "$debug" ] && echo -n "."
    done
# report current status
    ( virsh list | grep $vmName >/dev/null ) && echo " failed!" || echo " 
down."
# if still running, destroy it
    if ( virsh list | grep $vmName >/dev/null )
     then
      [ -n "$debug" ] && echo -n "Attempting to destroy $vmName "
      [ -z "$fake" ] && virsh destroy $vmName
# wait a limited time for the VM to be not running
      count=60
      while ( virsh list | grep $vmName >/dev/null ) && [ count -gt 0 ]
       do
        sleep 1
        let count=count-1
        [ -n "$debug" ] && echo -n "."
      done
# report current status
    ( virsh list | grep $vmName >/dev/null ) && echo " failed!" || echo " 
down."
    fi
fi
----------
over engineering and over analysing for 3 decades...
or is it over analysing and over engineering...