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Hi,  Dilip

Maybe you can check if the capacity_filter is working in volume creation process, and see why it choose the pool which don’t have space.

Thanks
Wang Hao
发件人: Dilip Sunkum Manjunath [mailto:Dilip.SunkumManjunath at toshiba-tsip.com]
发送时间: 2016年2月2日 9:49
收件人: openstack at lists.openstack.org
抄送: 'itzdilip at gmail.com'
主题: [Openstack] [CINDER] Scheduler Support for pools issue, not picking free pools

Hi all,


Use Case :

Step 1

*  I have multiple backend pools,

*  Updated the get_volume_stats() method to hold the pools information returned from storage API’s

Sample log :

[{'pool_name': '0', 'total_capacity_gb': 838, 'QoS_support': False, 'thick_provisioning_support': True, 'reserved_percentage': 1, 'consistencygroup_support': False, 'thin_provisioning_support': True, 'free_capacity_gb': 83.79999999999995}, {'pool_name': '1', 'total_capacity_gb': 1126, 'QoS_support': False, 'thick_provisioning_support': True, 'reserved_percentage': 1, 'consistencygroup_support': False, 'thin_provisioning_support': True, 'free_capacity_gb': 67.56000000000017}]


Step 2



*         In Create volume method am reading the pool information as storage api need pool info(on which pool in need to create)

*         Like pool_id = volume_utils.extract_host(volume['host'], level='pool') by making use of below import


from cinder.volume import utils as volume_utils

Problem am facing is:

                                                The scheduler is not always picking the free pool which has space, it returns the pool which don’t have space.
                                                I came to know when I printed the volume['host'] and above pool id.


Is there anything else I must do? Please suggest.



Thanks
Dilip





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