Re: [libvirt] boot time delay for domains?
On Wed, Dec 22, 2010 at 13:32, Harald Dunkel <harald.dunkel(a)aixigo.de> wrote:
Is there a global "boot time delay" configuration
parameter
to make sure that the autostart domains are not started all
in parallel at boot time?
AFAIK there is no such option.
Any helpful comment would be highly appreciated.
in domain XML you can change <emulator> tag and point to your script,
which will start domain after some random delay
e.g. something like this:
<domain type='kvm'>
<name>test</name>
...
<devices>
<emulator>/usr/bin/local/qemu-kvm-with-random-delay</emulator>
<devices>
</domain>
# cat > /usr/bin/local/qemu-kvm-with-random-delay
#!/bin/bash
# delay running of virtual machine by 0-9 seconds
sleep $(( $RANDOM % 10 ))
exec /usr/bin/qemu-kvm $*
^D
You can also detect if domain is started by libvirtd autostart feature or not.
it could be enough that you will check if [ -f
/var/lock/subsys/libvirtd ]. But I've not tested.
If you'll have some solution share with us, please.
--
Pawel