[one-users] [Help] How to reboot a VM when the VM crashes?

[Hutson Betts]

To force a hypervisor-level restart, the following command should
suffice:
onevm restart [VMID]

As per the documentation:
"restart: Forces the hypervisor boot action of a VM stuck in UNKNOWN or
BOOT state."

You can reference the diagram on:
http://opennebula.org/documentation:rel3.0:vm_guide_2
Which shows several transitional lines marked "restart".

Here's output after I 'restarted' a VM in the UNKNOWN state. I copied
only those lines mentioning my VM (VMID=20):
Thu Dec 22 12:31:23 2011 [DiM][D]: Restarting VM 20
Thu Dec 22 12:31:25 2011 [ReM][D]: VirtualMachinePoolInfo method invoked
Thu Dec 22 12:31:25 2011 [AuM][D]: Message received: LOG I 13696
ExitCode: 0
...
Thu Dec 22 12:31:26 2011 [VMM][D]: Message received: DEPLOY SUCCESS 20
one-20
...
Thu Dec 22 12:31:28 2011 [HKM][D]: Message received: EXECUTE SUCCESS 20
firewall

-- 
Hutson Betts
Computer Science and Engineering
Texas A&M University


On Fri, 2011-12-23 at 01:46 +0800, cat fa wrote:
> Could you tell me how to force a hypervisor-level restart ?
> 
> 2011/12/22 Hutson Betts <hut101 at tamu.edu>
> 
> > Actually, the SHUTDOWN command, for both OCCI and ONE, is equivalent to
> > pressing the power button on a computer, and once it's off, taking the
> > hard drive and smashing it with a hammer.
> >
> > SHUTDOWN deletes the disk image, and transitions the VM to the DONE
> > state. I would like to keep a VM, and it's files around, after I've
> > issued a shutdown command.
> >
> > It's only after requesting DELETE that I would want the VM to be
> > completely removed.
> >
> > As for the restart, you are correct. You can only force a
> > hypervisor-level restart if the VM is in either the BOOT state or
> > UNKNOWN state.
> >
> > --
> > Hutson Betts
> > Computer Science and Engineering
> > Texas A&M University
> >
> >
> > On Thu, 2011-12-22 at 12:10 +0800, cat fa wrote:
> > > There is an equivalent to a power button(SHUTDOWN), but there is no
> > > equivalent to a reset button.
> > >
> > > 2011/12/22 Hutson Betts <hut101 at tamu.edu>
> > >
> > > > Wait, this implies that there is no equivalent to a power button or
> > > > reset button on the front of a computer? Wouldn't this should be a
> > > > necessity of every VM management tool.
> > > >
> > > > As it stands, I can suspend/resume VMs, or I can (shutdown|cancel) VMs
> > > > into a deleted state. However, there is no way to shutdown (Analogous
> > to
> > > > powered-off) a VM (External to the VM) and resume it later without loss
> > > > of data.
> > > >
> > > > In:
> > > > http://opennebula.org/_detail/documentation:rel3.0:states-complete.png
> > > > There should probably be a (restart) from [running] -> [boot].
> > > > Probably would be a hard-reset.
> > > >
> > > >
> > > > --
> > > > Hutson Betts
> > > > Computer Science and Engineering
> > > > Texas A&M University
> > > >
> > > >
> > > > On Wed, 2011-12-21 at 12:42 +0100, richard -rw- weinberger wrote:
> > > > > 2011/12/20 Carlos Martín Sánchez <cmartin at opennebula.org>:
> > > > > > Hi,
> > > > > >
> > > > > > You can use the 'onevm restart' command, see [1] for more
> > information
> > > > on the
> > > > > > VM life-cycle.
> > > > > >
> > > > >
> > > > > As cat fa already pointed out this is not going to work.
> > > > > A reset command would be really nice to have.
> > > > >
> > > > > Reset should remove the virtual machine from the hyperviser and
> > > > > restart it without
> > > > > removing and recreating it in OpenNebula.
> > > > >
> > > >
> > > > _______________________________________________
> > > > Users mailing list
> > > > Users at lists.opennebula.org
> > > > http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
> > > >
> > > >
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> >
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> >
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