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From Nguyen Anh Tu <ng.t...@gmail.com>
Subject Re: About XAPI task queue
Date Tue, 21 May 2013 17:30:44 GMT
Perfect, Chiradeep. Exactly what i'm looking for. How about xapi queue?
Could u send me more information about it

Thanks :-)

Sent from my GT-N7000
On 22 May 2013 00:19, "Chiradeep Vittal" <Chiradeep.Vittal@citrix.com>
wrote:

> Also
> http://docs.vmd.citrix.com/XenServer/4.0.1/sdk/ch04.html#id2538486
>
>
> On 5/21/13 10:12 AM, "Chiradeep Vittal" <Chiradeep.Vittal@citrix.com>
> wrote:
>
> >Are you looking for information on how XAPI does async processing?
> >http://wiki.xen.org/wiki/VM_Startup
> >
> >http://wiki.xen.org/wiki/XAPI_Dispatch
> >
> >
> >On 5/21/13 1:52 AM, "Nguyen Anh Tu" <ng.tuna@gmail.com> wrote:
> >
> >>no one can explain it for me?
> >>
> >>
> >>2013/5/10 Nguyen Anh Tu <ng.tuna@gmail.com>
> >>
> >>> Hi forks,
> >>>
> >>> I'm working on CS + XCP. I have a question:
> >>>
> >>> When starting VM, Async job "startvm" is sent to XCP Host via xapi.
> >>>Then
> >>> we have to wait until xapi task responses.  This code here:
> >>>
> >>>     void startVM(Connection conn, Host host, VM vm, String vmName)
> >>>throws
> >>> XmlRpcException {
> >>>         Task task = null;
> >>>         try {
> >>>            * task = vm.startOnAsync(conn, host, false, true);*
> >>>             try {
> >>>                 //poll every 1 seconds , timeout after 10 minutes
> >>>                 *waitForTask(conn, task, 1000, 10 * 60 * 1000);*
> >>>                 *checkForSuccess(conn, task);*
> >>>             } catch (Types.HandleInvalid e) {
> >>>                 if (vm.getPowerState(conn) ==
> >>>Types.VmPowerState.RUNNING) {
> >>>                     task = null;
> >>>                     return;
> >>>                 }
> >>>                 throw new CloudRuntimeException("Shutdown VM catch
> >>> HandleInvalid and VM is not in RUNNING state");
> >>>             }
> >>>         } catch (XenAPIException e) {
> >>>             String msg = "Unable to start VM(" + vmName + ") on host("
> >>>+
> >>> _host.uuid +") due to " + e.toString();
> >>>             s_logger.warn(msg, e);
> >>>             throw new CloudRuntimeException(msg);
> >>>         }finally {
> >>>             if( task != null) {
> >>>                 try {
> >>>                     task.destroy(conn);
> >>>                 } catch (Exception e1) {
> >>>                     s_logger.debug("unable to destroy task(" +
> >>> task.toString() + ") on host(" + _host.uuid +") due to " +
> >>>e1.toString());
> >>>                 }
> >>>             }
> >>>         }
> >>>     }
> >>>
> >>> Can you explain how xapi task work? How xapi queue work? When its task
> >>> responses?
> >>>
> >>> Thanks,
> >>>
> >>> --
> >>>
> >>> N.g.U.y.e.N.A.n.H.t.U
> >>>
> >>
> >>
> >>
> >>--
> >>
> >>N.g.U.y.e.N.A.n.H.t.U
> >
>
>

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