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On 12/11/2017 12:37 AM, 李杰 wrote:
>   Hi,all:
>          Now I boot a volume-backed instance,and set" 
> block_device_allocate_retries=120 " ,but the result is still is volume 
> did not finish being created.Can you give me some advice?Help in 
> troubleshooting this issue will be appreciated.
> 
> 

Have you traced where the time is being spent? Is it in creating the 
volume on the Cinder side? Does the volume eventually get created or 
does it fail to create?

Do you have the image cache enabled on the cinder-volume host?

-- 

Thanks,

Matt