Re: [Users] Unable to get latest resource status
Hi Alex, On 04/28/2012 06:19 AM, Alex Jia wrote: On 04/27/2012 11:30 PM, Juan Hernandez wrote: On 04/27/2012 05:27 PM, Alex Jia wrote: Although I haven't try it, I think you're right, I should refresh VM in loop body. Let me know what is the result in your environment. I have tried it and indeed works well for me. In addition, as I said, it will be convenient if we have wait_for_status function like before. I will look into it. I would greatly appreciate if you can open a bug to request and track it. It's okay for me, I want to know I need to file a fedora bug? which component? because I'm doing these on RHEL6.2. it's not a bug, since we using RESTful api, you get resource representation which is holding vm metadata relevant only for the given moment, if you want to poll this vm for the status change, you'll have to retrieve it on each iteration. not relevant to vm execution, but we also have /sync execution mode/ (mostly on storage related actions, see our user guide [1]), so you can block action till it get accomplished on server side. [1] http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Virtualization/3.0/html/REST_API_Guide/ -- Michael Pasternak RedHat, ENG-Virtualization RD ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [Users] Unable to get latest resource status
Hi Michael, Thanks for your reply, yeah, it's not a bug, I mean whether we may support wait_for_status function in ovirt-engine-sdk like python-rhev, as I said, it will be more convenient for users. so it should be RFE. In addition, I know this user guide, however, I think I need to see it carefully again. Thanks, Alex - Original Message - From: Michael Pasternak mpast...@redhat.com To: Alex Jia a...@redhat.com Cc: Juan Hernandez juan.hernan...@redhat.com, users@ovirt.org, Rita Wu r...@redhat.com, Itamar Heim ih...@redhat.com Sent: Saturday, April 28, 2012 7:21:59 PM Subject: Re: [Users] Unable to get latest resource status Hi Alex, On 04/28/2012 06:19 AM, Alex Jia wrote: On 04/27/2012 11:30 PM, Juan Hernandez wrote: On 04/27/2012 05:27 PM, Alex Jia wrote: Although I haven't try it, I think you're right, I should refresh VM in loop body. Let me know what is the result in your environment. I have tried it and indeed works well for me. In addition, as I said, it will be convenient if we have wait_for_status function like before. I will look into it. I would greatly appreciate if you can open a bug to request and track it. It's okay for me, I want to know I need to file a fedora bug? which component? because I'm doing these on RHEL6.2. it's not a bug, since we using RESTful api, you get resource representation which is holding vm metadata relevant only for the given moment, if you want to poll this vm for the status change, you'll have to retrieve it on each iteration. not relevant to vm execution, but we also have /sync execution mode/ (mostly on storage related actions, see our user guide [1]), so you can block action till it get accomplished on server side. [1] http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Virtualization/3.0/html/REST_API_Guide/ -- Michael Pasternak RedHat, ENG-Virtualization RD ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [Users] Unable to get latest resource status
On 04/26/2012 05:49 PM, Alex Jia wrote: I built ovirt-engine-sdk rpm based on git repo 'http://gerrit.ovirt.org/p/ovirt-engine-sdk.git', then the ovirt-engine-sdk works well for me, I can get resource information from Ovirt/RHEVM(3.0) on the rhel6.2. The only question is I can't get latest resource status when I changed VM from 'suspended' to 'up' status, the api.vms.get(vm_name).status.state is always 'suspended' status, I can get a correct VM status unless I reconnect Ovirt/RHEVM, it's not convenient for users, I remember there are reload and wait_for_status method in old python binding API of RHEV(python-rhev), the wait_for_status method will reload resource then get current resource status, however, I haven't found similar method in ovirt-engine-sdk. Are you sure you are calling api.vms.get(vm_name) each time? Or are you doing something like this: vm = api.vms.get(vm_name) while vm.status.state == suspended: sleep(10) If you are doing that the vm information is retrieved only once, not each time. If this is the case try something like this: while api.vms.get(VM_NAME).status.state == suspended: sleep(1) Can you share that snippet of code so that I can try to reproduce it? -- 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. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [Users] Unable to get latest resource status
On 04/26/2012 05:49 PM, Alex Jia wrote: I built ovirt-engine-sdk rpm based on git repo 'http://gerrit.ovirt.org/p/ovirt-engine-sdk.git', then the ovirt-engine-sdk works well for me, I can get resource information from Ovirt/RHEVM(3.0) on the rhel6.2. The only question is I can't get latest resource status when I changed VM from 'suspended' to 'up' status, the api.vms.get(vm_name).status.state is always 'suspended' status, I can get a correct VM status unless I reconnect Ovirt/RHEVM, it's not convenient for users, I remember there are reload and wait_for_status method in old python binding API of RHEV(python-rhev), the wait_for_status method will reload resource then get current resource status, however, I haven't found similar method in ovirt-engine-sdk. Are you sure you are calling api.vms.get(vm_name) each time? Or are you doing something like this: vm = api.vms.get(vm_name) while vm.status.state == suspended: sleep(10) If you are doing that the vm information is retrieved only once, not each time. If this is the case try something like this: while api.vms.get(VM_NAME).status.state == suspended: sleep(1) Can you share that snippet of code so that I can try to reproduce it? ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [Users] Unable to get latest resource status
On 04/27/2012 04:06 PM, Juan Hernandez wrote:
On 04/26/2012 05:49 PM, Alex Jia wrote:
I built ovirt-engine-sdk rpm based on git repo
'http://gerrit.ovirt.org/p/ovirt-engine-sdk.git',
then the ovirt-engine-sdk works well for me, I can get resource information
from Ovirt/RHEVM(3.0)
on the rhel6.2.
The only question is I can't get latest resource status when I changed VM from
'suspended' to 'up'
status, the api.vms.get(vm_name).status.state is always 'suspended' status, I
can get a correct
VM status unless I reconnect Ovirt/RHEVM, it's not convenient for users, I
remember there are reload
and wait_for_status method in old python binding API of RHEV(python-rhev), the
wait_for_status method
will reload resource then get current resource status, however, I haven't found
similar method in
ovirt-engine-sdk.
Are you sure you are calling api.vms.get(vm_name) each time? Or are you
doing something like this:
vm = api.vms.get(vm_name)
while vm.status.state == suspended:
sleep(10)
Yeah, I put 'api.vms.get(vm_name)' in a loop body like above codes.
If you are doing that the vm information is retrieved only once, not
each time. If this is the case try something like this:
while api.vms.get(VM_NAME).status.state == suspended:
sleep(1)
Can you share that snippet of code so that I can try to reproduce it?
Okay, I will list my snippet of code in here, you may replace 'logging'
with 'print' then remove
useless '()' if need. thanks.
snip
import time, logging
from ovirtsdk.api import API
from ovirtsdk.xml import params
class RHEV(object):
RHEV class
def __init__(self, url, username, password):
try:
self.api = API(url, username, password)
except Exception as e:
logging.error('could not connect: %s\n' % str(e))
else:
logging.info('success: RHEV manager could be reached OK\n')
def vm_start(self, vm_name):
try:
vm = self.api.vms.get(vm_name)
if vm.status.state != 'up':
logging.info('Starting VM')
vm.start()
logging.info('Waiting for VM to reach Up status')
while vm.status.state != 'up':
time.sleep(1)
else:
logging.debug('VM already up')
except Exception as e:
logging.error('Failed to start VM:\n%s' % str(e))
def vm_suspend(self, vm_name):
vm = self.api.vms.get(vm_name)
while vm.status.state != 'suspended':
try:
logging.info('Suspend VM')
vm.suspend()
logging.info('Waiting for VM to reach suspended status')
while vm.status.state != 'suspended':
time.sleep(1)
except Exception as e:
if e.reason == 'Bad Request' \
and 'asynchronous running tasks' in e.detail:
logging.warning('VM has asynchronous running tasks,
trying again')
time.sleep(1)
else:
logging.error('Failed to suspend VM:\n%s' % str(e))
break
def vm_resume(self, vm_name):
try:
vm = self.api.vms.get(vm_name)
if vm.status.state != 'up':
logging.info('Resume VM')
vm.start()
logging.info('Waiting for VM to resume')
while vm.status.state != 'up':
time.sleep(1)
else:
logging.debug('VM already up')
except Exception as e:
logging.error('Failed to resume VM:\n%s' % str(e))
/snip
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Re: [Users] Unable to get latest resource status
On 04/27/2012 12:06 PM, Alex Jia wrote:
On 04/27/2012 04:06 PM, Juan Hernandez wrote:
On 04/26/2012 05:49 PM, Alex Jia wrote:
I built ovirt-engine-sdk rpm based on git repo
'http://gerrit.ovirt.org/p/ovirt-engine-sdk.git',
then the ovirt-engine-sdk works well for me, I can get resource information
from Ovirt/RHEVM(3.0)
on the rhel6.2.
The only question is I can't get latest resource status when I changed VM
from 'suspended' to 'up'
status, the api.vms.get(vm_name).status.state is always 'suspended' status,
I can get a correct
VM status unless I reconnect Ovirt/RHEVM, it's not convenient for users, I
remember there are reload
and wait_for_status method in old python binding API of RHEV(python-rhev),
the wait_for_status method
will reload resource then get current resource status, however, I haven't
found similar method in
ovirt-engine-sdk.
Are you sure you are calling api.vms.get(vm_name) each time? Or are you
doing something like this:
vm = api.vms.get(vm_name)
while vm.status.state == suspended:
sleep(10)
Yeah, I put 'api.vms.get(vm_name)' in a loop body like above codes.
If you are doing that the vm information is retrieved only once, not
each time. If this is the case try something like this:
while api.vms.get(VM_NAME).status.state == suspended:
sleep(1)
Can you share that snippet of code so that I can try to reproduce it?
Okay, I will list my snippet of code in here, you may replace 'logging'
with 'print' then remove
useless '()' if need. thanks.
snip
import time, logging
from ovirtsdk.api import API
from ovirtsdk.xml import params
class RHEV(object):
RHEV class
def __init__(self, url, username, password):
try:
self.api = API(url, username, password)
except Exception as e:
logging.error('could not connect: %s\n' % str(e))
else:
logging.info('success: RHEV manager could be reached OK\n')
def vm_start(self, vm_name):
try:
vm = self.api.vms.get(vm_name)
if vm.status.state != 'up':
logging.info('Starting VM')
vm.start()
logging.info('Waiting for VM to reach Up status')
while vm.status.state != 'up':
I think that the problem is with the line above. The VM object that you
get with self.api.vms.get(vm_name) is not automatically refreshed, you
have to refresh it before each iteration calling the api.vms.get(...)
method again:
while api.vms.get(vm_name).status.state != 'up':
Can you try that?
time.sleep(1)
else:
logging.debug('VM already up')
except Exception as e:
logging.error('Failed to start VM:\n%s' % str(e))
def vm_suspend(self, vm_name):
vm = self.api.vms.get(vm_name)
while vm.status.state != 'suspended':
try:
logging.info('Suspend VM')
vm.suspend()
logging.info('Waiting for VM to reach suspended status')
while vm.status.state != 'suspended':
Same here ^.
time.sleep(1)
except Exception as e:
if e.reason == 'Bad Request' \
and 'asynchronous running tasks' in e.detail:
logging.warning('VM has asynchronous running tasks,
trying again')
time.sleep(1)
else:
logging.error('Failed to suspend VM:\n%s' % str(e))
break
def vm_resume(self, vm_name):
try:
vm = self.api.vms.get(vm_name)
if vm.status.state != 'up':
logging.info('Resume VM')
vm.start()
logging.info('Waiting for VM to resume')
while vm.status.state != 'up':
Same here ^.
time.sleep(1)
else:
logging.debug('VM already up')
except Exception as e:
logging.error('Failed to resume VM:\n%s' % str(e))
/snip
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Re: [Users] Unable to get latest resource status
Hi Juan,
Although I haven't try it, I think you're right, I should refresh VM
in loop body.
In addition, as I said, it will be convenient if we have wait_for_status
function like before.
Thanks,
Alex
- Original Message -
From: Juan Hernandez juan.hernan...@redhat.com
To: Alex Jia a...@redhat.com
Cc: users@ovirt.org, Rita Wu r...@redhat.com
Sent: Friday, April 27, 2012 8:17:05 PM
Subject: Re: [Users] Unable to get latest resource status
On 04/27/2012 12:06 PM, Alex Jia wrote:
On 04/27/2012 04:06 PM, Juan Hernandez wrote:
On 04/26/2012 05:49 PM, Alex Jia wrote:
I built ovirt-engine-sdk rpm based on git repo
'http://gerrit.ovirt.org/p/ovirt-engine-sdk.git',
then the ovirt-engine-sdk works well for me, I can get resource information
from Ovirt/RHEVM(3.0)
on the rhel6.2.
The only question is I can't get latest resource status when I changed VM
from 'suspended' to 'up'
status, the api.vms.get(vm_name).status.state is always 'suspended' status,
I can get a correct
VM status unless I reconnect Ovirt/RHEVM, it's not convenient for users, I
remember there are reload
and wait_for_status method in old python binding API of RHEV(python-rhev),
the wait_for_status method
will reload resource then get current resource status, however, I haven't
found similar method in
ovirt-engine-sdk.
Are you sure you are calling api.vms.get(vm_name) each time? Or are you
doing something like this:
vm = api.vms.get(vm_name)
while vm.status.state == suspended:
sleep(10)
Yeah, I put 'api.vms.get(vm_name)' in a loop body like above codes.
If you are doing that the vm information is retrieved only once, not
each time. If this is the case try something like this:
while api.vms.get(VM_NAME).status.state == suspended:
sleep(1)
Can you share that snippet of code so that I can try to reproduce it?
Okay, I will list my snippet of code in here, you may replace 'logging'
with 'print' then remove
useless '()' if need. thanks.
snip
import time, logging
from ovirtsdk.api import API
from ovirtsdk.xml import params
class RHEV(object):
RHEV class
def __init__(self, url, username, password):
try:
self.api = API(url, username, password)
except Exception as e:
logging.error('could not connect: %s\n' % str(e))
else:
logging.info('success: RHEV manager could be reached OK\n')
def vm_start(self, vm_name):
try:
vm = self.api.vms.get(vm_name)
if vm.status.state != 'up':
logging.info('Starting VM')
vm.start()
logging.info('Waiting for VM to reach Up status')
while vm.status.state != 'up':
I think that the problem is with the line above. The VM object that you
get with self.api.vms.get(vm_name) is not automatically refreshed, you
have to refresh it before each iteration calling the api.vms.get(...)
method again:
while api.vms.get(vm_name).status.state != 'up':
Can you try that?
time.sleep(1)
else:
logging.debug('VM already up')
except Exception as e:
logging.error('Failed to start VM:\n%s' % str(e))
def vm_suspend(self, vm_name):
vm = self.api.vms.get(vm_name)
while vm.status.state != 'suspended':
try:
logging.info('Suspend VM')
vm.suspend()
logging.info('Waiting for VM to reach suspended status')
while vm.status.state != 'suspended':
Same here ^.
time.sleep(1)
except Exception as e:
if e.reason == 'Bad Request' \
and 'asynchronous running tasks' in e.detail:
logging.warning('VM has asynchronous running tasks,
trying again')
time.sleep(1)
else:
logging.error('Failed to suspend VM:\n%s' % str(e))
break
def vm_resume(self, vm_name):
try:
vm = self.api.vms.get(vm_name)
if vm.status.state != 'up':
logging.info('Resume VM')
vm.start()
logging.info('Waiting for VM to resume')
while vm.status.state != 'up':
Same here ^.
time.sleep(1)
else:
logging.debug('VM already up')
except Exception as e:
logging.error('Failed to resume VM:\n%s' % str(e))
/snip
___
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Re: [Users] Unable to get latest resource status
On 04/27/2012 05:27 PM, Alex Jia wrote:
Although I haven't try it, I think you're right, I should refresh VM
in loop body.
Let me know what is the result in your environment.
In addition, as I said, it will be convenient if we have wait_for_status
function like before.
I will look into it. I would greatly appreciate if you can open a bug to
request and track it.
- Original Message -
From: Juan Hernandez juan.hernan...@redhat.com
To: Alex Jia a...@redhat.com
Cc: users@ovirt.org, Rita Wu r...@redhat.com
Sent: Friday, April 27, 2012 8:17:05 PM
Subject: Re: [Users] Unable to get latest resource status
On 04/27/2012 12:06 PM, Alex Jia wrote:
On 04/27/2012 04:06 PM, Juan Hernandez wrote:
On 04/26/2012 05:49 PM, Alex Jia wrote:
I built ovirt-engine-sdk rpm based on git repo
'http://gerrit.ovirt.org/p/ovirt-engine-sdk.git',
then the ovirt-engine-sdk works well for me, I can get resource
information from Ovirt/RHEVM(3.0)
on the rhel6.2.
The only question is I can't get latest resource status when I changed VM
from 'suspended' to 'up'
status, the api.vms.get(vm_name).status.state is always 'suspended'
status, I can get a correct
VM status unless I reconnect Ovirt/RHEVM, it's not convenient for users, I
remember there are reload
and wait_for_status method in old python binding API of RHEV(python-rhev),
the wait_for_status method
will reload resource then get current resource status, however, I haven't
found similar method in
ovirt-engine-sdk.
Are you sure you are calling api.vms.get(vm_name) each time? Or are you
doing something like this:
vm = api.vms.get(vm_name)
while vm.status.state == suspended:
sleep(10)
Yeah, I put 'api.vms.get(vm_name)' in a loop body like above codes.
If you are doing that the vm information is retrieved only once, not
each time. If this is the case try something like this:
while api.vms.get(VM_NAME).status.state == suspended:
sleep(1)
Can you share that snippet of code so that I can try to reproduce it?
Okay, I will list my snippet of code in here, you may replace 'logging'
with 'print' then remove
useless '()' if need. thanks.
snip
import time, logging
from ovirtsdk.api import API
from ovirtsdk.xml import params
class RHEV(object):
RHEV class
def __init__(self, url, username, password):
try:
self.api = API(url, username, password)
except Exception as e:
logging.error('could not connect: %s\n' % str(e))
else:
logging.info('success: RHEV manager could be reached OK\n')
def vm_start(self, vm_name):
try:
vm = self.api.vms.get(vm_name)
if vm.status.state != 'up':
logging.info('Starting VM')
vm.start()
logging.info('Waiting for VM to reach Up status')
while vm.status.state != 'up':
I think that the problem is with the line above. The VM object that you
get with self.api.vms.get(vm_name) is not automatically refreshed, you
have to refresh it before each iteration calling the api.vms.get(...)
method again:
while api.vms.get(vm_name).status.state != 'up':
Can you try that?
time.sleep(1)
else:
logging.debug('VM already up')
except Exception as e:
logging.error('Failed to start VM:\n%s' % str(e))
def vm_suspend(self, vm_name):
vm = self.api.vms.get(vm_name)
while vm.status.state != 'suspended':
try:
logging.info('Suspend VM')
vm.suspend()
logging.info('Waiting for VM to reach suspended status')
while vm.status.state != 'suspended':
Same here ^.
time.sleep(1)
except Exception as e:
if e.reason == 'Bad Request' \
and 'asynchronous running tasks' in e.detail:
logging.warning('VM has asynchronous running tasks,
trying again')
time.sleep(1)
else:
logging.error('Failed to suspend VM:\n%s' % str(e))
break
def vm_resume(self, vm_name):
try:
vm = self.api.vms.get(vm_name)
if vm.status.state != 'up':
logging.info('Resume VM')
vm.start()
logging.info('Waiting for VM to resume')
while vm.status.state != 'up':
Same here ^.
time.sleep(1)
else:
logging.debug('VM already up')
except Exception as e:
logging.error('Failed to resume VM:\n%s' % str(e))
/snip
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Re: [Users] Unable to get latest resource status
On 04/27/2012 11:30 PM, Juan Hernandez wrote:
On 04/27/2012 05:27 PM, Alex Jia wrote:
Although I haven't try it, I think you're right, I should refresh VM
in loop body.
Let me know what is the result in your environment.
I have tried it and indeed works well for me.
In addition, as I said, it will be convenient if we have wait_for_status
function like before.
I will look into it. I would greatly appreciate if you can open a bug to
request and track it.
It's okay for me, I want to know I need to file a fedora bug? which
component?
because I'm doing these on RHEL6.2.
- Original Message -
From: Juan Hernandezjuan.hernan...@redhat.com
To: Alex Jiaa...@redhat.com
Cc: users@ovirt.org, Rita Wur...@redhat.com
Sent: Friday, April 27, 2012 8:17:05 PM
Subject: Re: [Users] Unable to get latest resource status
On 04/27/2012 12:06 PM, Alex Jia wrote:
On 04/27/2012 04:06 PM, Juan Hernandez wrote:
On 04/26/2012 05:49 PM, Alex Jia wrote:
I built ovirt-engine-sdk rpm based on git repo
'http://gerrit.ovirt.org/p/ovirt-engine-sdk.git',
then the ovirt-engine-sdk works well for me, I can get resource information
from Ovirt/RHEVM(3.0)
on the rhel6.2.
The only question is I can't get latest resource status when I changed VM from
'suspended' to 'up'
status, the api.vms.get(vm_name).status.state is always 'suspended' status, I
can get a correct
VM status unless I reconnect Ovirt/RHEVM, it's not convenient for users, I
remember there are reload
and wait_for_status method in old python binding API of RHEV(python-rhev), the
wait_for_status method
will reload resource then get current resource status, however, I haven't found
similar method in
ovirt-engine-sdk.
Are you sure you are calling api.vms.get(vm_name) each time? Or are you
doing something like this:
vm = api.vms.get(vm_name)
while vm.status.state == suspended:
sleep(10)
Yeah, I put 'api.vms.get(vm_name)' in a loop body like above codes.
If you are doing that the vm information is retrieved only once, not
each time. If this is the case try something like this:
while api.vms.get(VM_NAME).status.state == suspended:
sleep(1)
Can you share that snippet of code so that I can try to reproduce it?
Okay, I will list my snippet of code in here, you may replace 'logging'
with 'print' then remove
useless '()' if need. thanks.
snip
import time, logging
from ovirtsdk.api import API
from ovirtsdk.xml import params
class RHEV(object):
RHEV class
def __init__(self, url, username, password):
try:
self.api = API(url, username, password)
except Exception as e:
logging.error('could not connect: %s\n' % str(e))
else:
logging.info('success: RHEV manager could be reached OK\n')
def vm_start(self, vm_name):
try:
vm = self.api.vms.get(vm_name)
if vm.status.state != 'up':
logging.info('Starting VM')
vm.start()
logging.info('Waiting for VM to reach Up status')
while vm.status.state != 'up':
I think that the problem is with the line above. The VM object that you
get with self.api.vms.get(vm_name) is not automatically refreshed, you
have to refresh it before each iteration calling the api.vms.get(...)
method again:
while api.vms.get(vm_name).status.state != 'up':
Can you try that?
time.sleep(1)
else:
logging.debug('VM already up')
except Exception as e:
logging.error('Failed to start VM:\n%s' % str(e))
def vm_suspend(self, vm_name):
vm = self.api.vms.get(vm_name)
while vm.status.state != 'suspended':
try:
logging.info('Suspend VM')
vm.suspend()
logging.info('Waiting for VM to reach suspended status')
while vm.status.state != 'suspended':
Same here ^.
time.sleep(1)
except Exception as e:
if e.reason == 'Bad Request' \
and 'asynchronous running tasks' in e.detail:
logging.warning('VM has asynchronous running tasks,
trying again')
time.sleep(1)
else:
logging.error('Failed to suspend VM:\n%s' % str(e))
break
def vm_resume(self, vm_name):
try:
vm = self.api.vms.get(vm_name)
if vm.status.state != 'up':
logging.info('Resume VM')
vm.start()
logging.info('Waiting for VM to resume')
while vm.status.state != 'up':
Same here ^.
time.sleep(1)
else:
logging.debug('VM already up')
except Exception as e:
logging.error('Failed to resume VM:\n%s' % str(e))
/snip
