Red Hat ENTERPRISE LINUX 5 - VIRTUALIZATION GUIDE Guide d'installation Page 230

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Create the following script inside the virtual machine to log date and hostname during the migration.
This script performs I/O tasks on the guest's file system.
#!/bin/bash
while true
do
touch /var/tmp/$$.log
echo `hostname` >> /var/tmp/$$.log
echo `date` >> /var/tmp/$$.log
cat /var/tmp/$$.log
df /var/tmp
ls -l /var/tmp/$$.log
sleep 3
done
Remember, that script is only for testing purposes and unnecessary for a live migration in a
production environment.
Verify the virtual machine is running on et-virt08 before we try to migrate it to et-virt07:
[et-virt08 ~]# virsh list
Id Name State
----------------------------------
Domain-0 running
testvm1 blocked
Initiate a live migration to et-virt07. You can add the time command to see how long the
migration takes:
[et-virt08 ~]# xm migrate --live testvm1 et-virt07
run the script inside the guest:
# ./doit
dhcp78-218.lab.boston.redhat.com
Fri Jan 12 02:26:27 EST 2007
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
2983664 2043120 786536 73% /
-rw-r--r-- 1 root root 62 Jan 12 02:26 /var/tmp/2279.log
dhcp78-218.lab.boston.redhat.com
Fri Jan 12 02:26:27 EST 2007
dhcp78-218.lab.boston.redhat.com
Fri Jan 12 02:26:30 EST 2007
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
2983664 2043120 786536 73% /
-rw-r--r-- 1 root root 124 Jan 12 02:26 /var/tmp/2279.log
dhcp78-218.lab.boston.redhat.com
Fri Jan 12 02:26:27 EST 2007
dhcp78-218.lab.boston.redhat.com
Fri Jan 12 02:26:30 EST 2007
dhcp78-218.lab.boston.redhat.com
Fri Jan 12 02:26:33 EST 2007
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
2983664 2043120 786536 73% /
-rw-r--r-- 1 root root 186 Jan 12 02:26 /var/tmp/2279.log
Fri Jan 12 02:26:45 EST 2007
dhcp78-218.lab.boston.redhat.com
Fri Jan 12 02:26:48 EST 2007
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