I just hit this problem in a lab environment with every openstack component virtualised in VMs on one baremetal machine. It's a low performance environment. I put block_device_allocate_retries = 300 and block_device_allocate_retries_interval = 3 and it worked for me.
I just hit this problem in a lab environment with every openstack component virtualised in VMs on one baremetal machine. It's a low performance environment. I put block_device_ allocate_ retries = 300 and block_device_ allocate_ retries_ interval = 3 and it worked for me.