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        <style type="text/css">p { margin-bottom: 0.25cm; line-heighHow does an instance
with flavor m1.nano (disk = 0, RAM =64) has disk.usage >0 ?
</style><p style="margin-bottom: 0cm; line-height: 100%">Hi Folks,</p><p style="margin-bottom: 0cm; line-height: 100%"><br></p><p style="margin-bottom: 0cm; line-height: 100%">I have installed
devstack kilo version of OpenStack and created an instance on it with
flavor <b>“m1.nano”</b> that gives a disk of 0 to your instance.
</p><p style="margin-bottom: 0cm; line-height: 100%">But while checking
disk usage of the instance using <b>“disk.usage”</b> meter it
gives the output to be greater than 0 so how is it possible ?
</p><p style="margin-bottom: 0cm; line-height: 100%"><br>
</p>
<p style="margin-bottom: 0cm; line-height: 100%"><b>stack@abhishek:/opt/stack/ceilometer$
nova show e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa
</b></p>
<p style="margin-bottom: 0cm; line-height: 100%">+--------------------------------------+----------------------------------------------------------------+
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| Property          
                  | Value                                            
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">+--------------------------------------+----------------------------------------------------------------+
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| OS-DCF:diskConfig 
                  | AUTO                                             
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
OS-EXT-AZ:availability_zone          | nova                          
                                |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
OS-EXT-SRV-ATTR:host                 | tcs-HP-Compaq-Elite-8300-SFF  
                                |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
OS-EXT-SRV-ATTR:hypervisor_hostname  | tcs-HP-Compaq-Elite-8300-SFF  
                                |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
OS-EXT-SRV-ATTR:instance_name        | instance-00000002             
                                |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
OS-EXT-STS:power_state               | 1                             
                                |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
OS-EXT-STS:task_state                | -                             
                                |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
OS-EXT-STS:vm_state                  | active                        
                                |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
OS-SRV-USG:launched_at               | 2015-09-10T05:24:19.000000    
                                |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
OS-SRV-USG:terminated_at             | -                             
                                |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| accessIPv4        
                  |                                                  
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| accessIPv6        
                  |                                                  
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| config_drive      
                  | True                                             
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| created           
                  | 2015-09-10T05:24:10Z                             
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| flavor            
                  | m1.nano (42)                                     
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| hostId            
                  |
4a3e03e0a89fbf3790a1b1cd59b1b10acbaad6aa31a4361996d52440       |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| id                
                  | e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa             
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| image             
                  | cirros-0.3.2-x86_64-uec
(221c46b3-9619-485e-8f60-0e1a363fc0e5) |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| key_name          
                  | -                                                
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| metadata          
                  | {}                                               
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| name              
                  | vmssasa                                          
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
os-extended-volumes:volumes_attached | []                            
                                |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| progress          
                  | 0                                                
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| public network    
                  | 172.24.4.4                                       
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| security_groups   
                  | default                                          
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| status            
                  | ACTIVE                                           
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| tenant_id         
                  | 5f4f5ee531a441d7bb3830529e611c7d                 
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| updated           
                  | 2015-09-10T05:24:19Z                             
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| user_id           
                  | d04b218204414a1891646735befd449c                 
             |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">+--------------------------------------+----------------------------------------------------------------+
</p>
<p style="margin-bottom: 0cm; line-height: 100%"><br>
</p>
<p style="margin-bottom: 0cm; line-height: 100%"><br>
</p>
<p style="margin-bottom: 0cm; line-height: 100%"><br>
</p><b>stack@abhishek:/opt/stack/ceilometer$
nova flavor-show m1.nano
</b>
<p style="margin-bottom: 0cm; line-height: 100%">+----------------------------+---------+
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| Property          
        | Value   |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">+----------------------------+---------+
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
OS-FLV-DISABLED:disabled   | False   |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
OS-FLV-EXT-DATA:ephemeral  | 0       |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| disk              
        | 0       |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| extra_specs       
        | {}      |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| id                
        | 42      |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| name              
        | m1.nano |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
os-flavor-access:is_public | True    |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| ram               
        | 64      |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| rxtx_factor       
        | 1.0     |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| swap              
        |         |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| vcpus             
        | 1       |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">+----------------------------+---------+
</p>
<p style="margin-bottom: 0cm; line-height: 100%"><br>
</p>
<p style="margin-bottom: 0cm; line-height: 100%"><b>stack@abhishek:/opt/stack/ceilometer$
ceilometer sample-list -m 'cpu_util' -q
"resource_id=e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa"</b></p>
<p style="margin-bottom: 0cm; line-height: 100%">+--------------------------------------+------------+-------+------------+------+---------------------+
</p>
<p style="margin-bottom: 0cm; line-height: 100%">| Resource ID       
                  | Name       | Type  | Volume     | Unit |
Timestamp           |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">+--------------------------------------+------------+-------+------------+------+---------------------+
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa | disk.usage | gauge |
11112448.0 | B    | 2015-09-10T10:30:54 |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa | disk.usage | gauge |
11112448.0 | B    | 2015-09-10T10:20:54 |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa | disk.usage | gauge |
11112448.0 | B    | 2015-09-10T10:10:54 |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa | disk.usage | gauge |
11112448.0 | B    | 2015-09-10T10:00:54 |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa | disk.usage | gauge |
11112448.0 | B    | 2015-09-10T09:48:25 |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa | disk.usage | gauge |
11112448.0 | B    | 2015-09-10T09:38:25 |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa | disk.usage | gauge |
11112448.0 | B    | 2015-09-10T09:21:42 |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa | disk.usage | gauge |
11112448.0 | B    | 2015-09-10T09:11:42 |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa | disk.usage | gauge |
11112448.0 | B    | 2015-09-10T09:01:42 |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa | disk.usage | gauge |
11112448.0 | B    | 2015-09-10T08:51:42 |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa | disk.usage | gauge |
11112448.0 | B    | 2015-09-10T08:41:42 |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa | disk.usage | gauge |
11112448.0 | B    | 2015-09-10T08:31:42 |
</p>
<p style="margin-bottom: 0cm; line-height: 100%">|
e3fd6b56-25df-4498-aa9d-8d9af3dfb4fa | disk.usage | gauge |
11112448.0 | B    | 2015-09-10T08:21:42 |
</p>
<p style="margin-bottom: 0cm; line-height: 100%"><br>
</p>
<p style="margin-bottom: 0cm; line-height: 100%"><br>
</p>
<p style="margin-bottom: 0cm; line-height: 100%">+--------------------------------------+------------+-------+------------+------+---------------------+
</p>
<p style="margin-bottom: 0cm; line-height: 100%"><br>
</p>

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