Hi again all I've just noticed that the snapshot status appears not to update.
Consider the code below: --- api.vms.get(VM_NAME).snapshots.add(params.Snapshot(description=SNAPSHOT_NAME, vm=api.vms.get(VM_NAME), persist_memorystate=True)) # Wait for snapshot to finish snap = api.vms.get(name=VM_NAME).snapshots.list()[-1] while (snap.get_snapshot_status() == 'locked'): print "Waiting for snapshot creation to finish (status is %s)" % snap.get_snapshot_status() --- What I find is that even though the WebUI reports the snapshot is created, snap.get_snapshot_status() still reports 'locked'. I'm using RHEV 3.5.7 with RHEL-H 7.1 hosts with vdsm-4.16.30-1.el7ev.x86_64. Am I misunderstanding how this works or have I found a bug? Thanks On Fri, Jan 15, 2016 at 6:04 PM, Juan Hernández <[email protected]> wrote: > On 01/15/2016 05:23 AM, Colin Coe wrote: > > Hi all > > > > I've written a Python script to take nightly snapshots of VMs which are > > kept for x days. After x days the snapshot is deleted. > > > > I can't work out how to wait for the snapshot deletion to complete. I > > know how to do it for creating the snapshot but I've not been able to > > get it right for the deletion. > > > > > > > api.vms.get(VM_NAME).snapshots.add(params.Snapshot(description=SNAPSHOT_NAME, > > vm=api.vms.get(VM_NAME), persist_memorystate=True)) > > while api.vms.get(VM_NAME).status.state == 'image_locked': > > sleep(1) > > > > Any ideas? > > > > Thanks > > > > CC > > > > > > The more reliable way to wait till the snapshot is effectively deleted > is just to try to get it, and finish when the result is "None": > > snapshot.delete() > > while vm.snapshots.get(id=snapshot.get_id()) is not None: > sleep(1) > > Alternatively you can use the return of the delete operation. It returns > an "Action" object, that contains a reference to the job that was > started to delete the snapshot. The XML representation looks like this: > > <action> > <job href="/api/jobs/f6e4279a-a8e1-44a3-86db-d53336b0eb5a" > id="f6e4279a-a8e1-44a3-86db-d53336b0eb5a"/> > <status> > <state>complete</state> > </status> > </action> > > As you can see that contains a link to the job. With the Python SDK you > can use it as follows: > > # Get the id of the job: > action = snapshot.delete() > job_id = action.get_job().get_id() > > # Wait till the job is finished: > while api.jobs.get(id=job_id).get_status().get_state() != 'FINISHED': > time.sleep(1) > > This is less reliable, because actions may or may not return a job, and > that depends on how the action is implemented in the engine, and there > is no backwards compatibility guarantee for that. A minor change in the > engine may result in the job not being returned. > > So my suggestion is to use the simple loop to check if the snapshot exists. > > -- > Dirección Comercial: C/Jose Bardasano Baos, 9, Edif. Gorbea 3, planta > 3ºD, 28016 Madrid, Spain > Inscrita en el Reg. Mercantil de Madrid – C.I.F. B82657941 - Red Hat S.L. >
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