I see...so, in case, for example, this API call is being executed in
multiple places at the same time, we are making sure we send the commands
to the VM in a serial fashion.
On Mon, Jul 14, 2014 at 4:09 PM, Kelven Yang <kelven.y...@citrix.com> wrote:
> Mike,
>
> This is related to serializing activities to the VM. When VM has multiple
> disks and volume-semantic API could create situations that there exist
> multiple volume operations happening at the same time on the same VM.
>
> Kelven
>
> On 7/14/14, 2:23 PM, "Mike Tutkowski" <mike.tutkow...@solidfire.com>
> wrote:
>
> >Hi,
> >
> >I have a question about this logic (related to resizing a volume):
> >
> > AsyncJobExecutionContext jobContext =
> >AsyncJobExecutionContext.getCurrentExecutionContext();
> >
> >
> > if (!VmJobEnabled.value() ||
> >jobContext.isJobDispatchedBy(VmWorkConstants.VM_WORK_JOB_DISPATCHER)) {
> >
> > // avoid re-entrance
> >
> >
> > VmWorkJobVO placeHolder = null;
> >
> >
> > if (VmJobEnabled.value()) {
> >
> > placeHolder = createPlaceHolderWork(userVm.getId());
> >
> > }
> >
> >
> > try {
> >
> > return orchestrateResizeVolume(volume.getId(),
> >currentSize, newSize,
> >
> > newDiskOffering != null ?
> >cmd.getNewDiskOfferingId() : null, shrinkOk);
> >
> > } finally {
> >
> > if (VmJobEnabled.value()) {
> >
> > _workJobDao.expunge(placeHolder.getId());
> >
> > }
> >
> > }
> >
> >
> > } else {
> >
> > Outcome<Volume> outcome =
> >resizeVolumeThroughJobQueue(userVm.getId(), volume.getId(), currentSize,
> >newSize,
> >
> > newDiskOffering != null ?
> >cmd.getNewDiskOfferingId() : null, shrinkOk);
> >
> >
> >Why would one resize the volume via the job queue versus the other path?
> >
> >Thanks!
> >--
> >*Mike Tutkowski*
> >*Senior CloudStack Developer, SolidFire Inc.*
> >e: mike.tutkow...@solidfire.com
> >o: 303.746.7302
> >Advancing the way the world uses the cloud
> ><http://solidfire.com/solution/overview/?video=play>* *
>
>
--
*Mike Tutkowski*
*Senior CloudStack Developer, SolidFire Inc.*
e: mike.tutkow...@solidfire.com
o: 303.746.7302
Advancing the way the world uses the cloud
<http://solidfire.com/solution/overview/?video=play>*™*
