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[Joseph Suh <jsuh@xxxxxxx>]

Heng,

Does scheduler log show any error message or complaints?

Thanks,

Joseph

----
(w) 703-248-6160
(f) 703-812-3712
http://www.east.isi.edu/~jsuh

Information Sciences Institute
University of Southern California
3811 N. Fairfax Drive Suite 200
Arlington, VA, 22203, USA


----- Original Message -----
From: "Heng Xu" <shouhengzhang.xu@xxxxxxxxxxxxxxxx>
To: openstack@xxxxxxxxxxxxxxxxxxx
Sent: Thursday, August 2, 2012 10:57:53 AM
Subject: [Openstack] Cannot pass hint to Nova Scheduler



Hi folks: 
I am new to openstack, I am current trying to test the json filter, I changed my /etc/nova/nova.conf as follow 

scheduler_driver=nova. 
scheduler.multi.MultiScheduler 
compute_scheduler_driver=nova.scheduler.filter_scheduler.FilterScheduler 
volume_scheduler_driver=nova.scheduler.chance.ChanceScheduler 
scheduler_available_filters=nova.scheduler.filters.standard_filters 
scheduler_default_filters=JsonFilter 
least_cost_functions=nova.scheduler.least_cost.compute_fill_first_cost_fn 
compute_fill_first_cost_fn_weight=-1.0 

so I can use the json filter 
however, when I was using it, if I boot a vm without any --hint to the scheduler, then the vm started fine, but if I use 

nova --debug boot --image 827d564a-e636-4fc4-a376- 
d36f7ebe1747 --flavor 1 --hint query=['>=','$free_ram_mb',1024] server1 

my vm started with error, and the following were output from the command above 

+----------------------------- 
--------+--------------------------------------+ 
| Property | Value | 
+-------------------------------------+--------------------------------------+ 
| OS-DCF:diskConfig | MANUAL | 
| OS-EXT-SRV-ATTR:host | None | 
| OS-EXT-SRV-ATTR:hypervisor_hostname | None | 
| OS-EXT-SRV-ATTR:instance_name | instance-0000002b | 
| OS-EXT-STS:power_state | 0 | 
| OS-EXT-STS:task_state | scheduling | 
| OS-EXT-STS:vm_state | error | 
| accessIPv4 | | 
| accessIPv6 | | 
| adminPass | dKvrsv4MZtfc | 
| config_drive | | 
| created | 2012-08-02T14:25:10Z | 
| flavor | m1.tiny | 
| hostId | | 
| id | 9d4a5855-3c69-40ba-b50d-3a2aa6a92edc | 
| image | cirros-0.3.0-x86_64-uec | 
| key_name | | 
| metadata | {} | 
| name | server1 | 
| progress | 0 | 
| status | BUILD | 
| tenant_id | d99ffa1b0c43455ab8dbbd81cf4380a7 | 
| updated | 2012-08-02T14:25:10Z | 
| user_id | d5e02f1810a44575b99a147f94507da1 | 
+-------------------------------------+--------------------------------------+ 

as you can see, the vm is in error, this also happens whenever I need to pass a hint to the scheduler, as in samehostfilter and differenthostfilter, 

Does anyone know what's going on, thanks in advance. 
Heng 


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