Boto ec2创建磁盘需要很长时间才能创建 - Python

Question

我正在编写关于使用 boto 在 EC2 中创建、附加、分离和销毁 EBS 卷的概念证明：

import time
import ec2.boto

conn = boto.ec2.connect_to_region("us-west-2",
            aws_access_key_id=AWS_ACCESS_KEY,
            aws_secret_access_key=AWS_SECRET_KEY)

reservation = conn.run_instances(
                'ami-1fa78f2f',
                instance_type='m3.medium')

instance = reservation.instances[0]
instance.add_tag('Name', 'volume_test')


while instance.state != 'running':
        time.sleep(10)
        instance.update() # Updates Instance metadata
        print 'Instance state: ', instance.state

print "attempting to attach volume"
vol = conn.create_volume(10, instance.placement)
while vol.status != 'available':
        print 'Vol state: ', vol.status
        time.sleep(20)

vol.attach(instance.id, '/dev/sdh')

这是一个 10GBv 的卷，但它永远不会脱离“正在创建”状态：

# python test.py 
Instance state:  pending
Instance state:  pending
Instance state:  running
attempting to attach volume
Vol state:  creating
Vol state:  creating
Vol state:  creating
Vol state:  creating
Vol state:  creating
Vol state:  creating
Vol state:  creating
Vol state:  creating
Vol state:  creating

是我做错了什么，还是 EC2 太慢而无法创建卷？

Answer 1

您没有更新循环内的音量。试试这个。

print "attempting to attach volume"
vol = conn.create_volume(10, instance.placement)
while vol.status != 'available':
    print 'Vol state: ', vol.status
    time.sleep(20)
    vol.update()