Hi Rickard,
Thanks for the response, that helps make the distinction clear. What I'm
still blocked on is getting the root vol to be increased.
The source image boots from /dev/xvda(1). When I specify /dev/xvda as the
device in ami_block_device_mappings
This builder config:
"builders": [{
"type": "amazon-ebs",
"communicator": "ssh",
"ssh_pty": "true",
"access_key": "{{user `aws_access_key`}}",
"secret_key": "{{user `aws_secret_key`}}",
"region": "eu-west-1",
"source_ami": "ami-88e60ff1",
"instance_type": "t2.nano",
"ssh_username": "admin",
"ami_name": "jenkins-slave-stretch{{timestamp}}",
"encrypt_boot": true,
"ami_block_device_mappings": [ {
"device_name": "/dev/xvda",
"volume_size": 42,
"volume_type": "gp2",
"encrypted": true,
"delete_on_termination": true
} ]
}],
It fails with the error:
Error creating AMI: InvalidBlockDeviceMapping: The device 'xvda' is used in
more than one block-device mapping
If I specify a different device id then I end up with an additional disk on
the image:
This builder config:
"builders": [{
"type": "amazon-ebs",
"communicator": "ssh",
"ssh_pty": "true",
"access_key": "{{user `aws_access_key`}}",
"secret_key": "{{user `aws_secret_key`}}",
"region": "eu-west-1",
"source_ami": "ami-88e60ff1",
"instance_type": "t2.nano",
"ssh_username": "admin",
"ami_name": "jenkins-slave-stretch{{timestamp}}",
"encrypt_boot": true,
"ami_block_device_mappings": [ {
"device_name": "/dev/xvdb",
"volume_size": 42,
"volume_type": "gp2",
"encrypted": true,
"delete_on_termination": true
} ]
}],
Ends up like this:
<https://lh3.googleusercontent.com/-OT3hgV71Yss/WZbMNPDGB8I/AAAAAAAAAAM/x33FVVEfRXYnK1cvKo_8oy039ZLgWGfUgCLcBGAs/s1600/Screen%2BShot%2B2017-08-18%2Bat%2B11.53.49.png>
So I've so-far failed to extend the root volume of the ami produced by
packer. What am I doing wrong?
Thanks again!
Rich
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