Open Stack

Grazie di cuore, Armando!

On 01/19/2012 04:27 PM, Armando Migliaccio wrote:
> Is this what you're looking for?
>
> https://blueprints.launchpad.net/nova/+spec/disk-configuration-parity
>
> A.
>
>> -----Original Message-----
>> From: openstack-bounces+armando.migliaccio=eu.citrix.com at lists.launchpad.net
>> [mailto:openstack-
>> bounces+armando.migliaccio=eu.citrix.com at lists.launchpad.net] On Behalf Of
>> Alessio Ababilov
>> Sent: 17 January 2012 16:12
>> To: openstack at lists.launchpad.net
>> Subject: [Openstack] Is m1.tiny instance type supported for Xen?
>>
>> Hi!
>>
>> OpenStack Nova allows to run instances with local_gb = 0 for m1.tiny
>> instance type if libvirt is used. As I see, m1.tiny is not supported
>> when using Xen. Am I right?
>>
>> I think it would be better to unify behavior for different backends.
>>
>> Here are code examples.
>>
>> Generic code allows local_gb == 0 (nova/compute/manager.py):
>>
>>               # NOTE(jk0): Since libvirt uses local_gb as a secondary
>> drive, we
>>               # need to handle potential situations where local_gb is 0.
>> This is
>>               # the default for m1.tiny.
>>               if allowed_size_gb == 0:
>>
>> Libvirt backend handles m1.tiny in special way
>> (nova/virt/libvirt/connection.py):
>>
>>           if inst_type['name'] == 'm1.tiny' or suffix == '.rescue':
>>               size = None
>>
>> Xen backend just checks the size (nova/virt/xenapi/vm_utils.py)
>>
>>       @classmethod
>>       def _check_vdi_size(cls, context, session, instance, vdi_uuid):
>>           size_bytes = cls._get_vdi_chain_size(context, session, vdi_uuid)
>>
>>           # FIXME(jk0): this was copied directly from compute.manager.py,
>> let's
>>           # refactor this to a common area
>>           instance_type_id = instance['instance_type_id']
>>           instance_type = db.instance_type_get(context,
>>                   instance_type_id)
>>           allowed_size_gb = instance_type['local_gb']
>>           allowed_size_bytes = allowed_size_gb * 1024 * 1024 * 1024
>>
>>           LOG.debug(_("image_size_bytes=%(size_bytes)d, allowed_size_bytes="
>>                       "%(allowed_size_bytes)d") % locals())
>>
>>           if size_bytes>  allowed_size_bytes:
>>               LOG.info(_("Image size %(size_bytes)d exceeded"
>>                          " instance_type allowed size "
>>                          "%(allowed_size_bytes)d")
>>                          % locals())
>>               raise exception.ImageTooLarge()
>>
>> --
>> Alessio Ababilov
>> Software Engineer
>> Grid Dynamics
>>
>>
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-- 
Alessio Ababilov
Software Engineer
Grid Dynamics