The action ModifyVolume is not valid for this web service.

[maheshb-cuelogic]

I am using modify_volume method to update volume. But when I hit the method it throws an error Fog::Compute::AWS::Error: InvalidAction => The action ModifyVolume is not valid for this web service..

irb(main):006:0> connection.modify_volume('volumeId', {'Size'=> 9})

Fog::Compute::AWS::Error: InvalidAction => The action ModifyVolume is not valid for this web service.

from /home/.gem/ruby/2.1.0/gems/excon-0.55.0/lib/excon/middlewares/expects.rb:7:in `response_call'

from /home/.gem/ruby/2.1.0/gems/excon-0.55.0/lib/excon/middlewares/response_parser.rb:9:in `response_call'

from /home/.gem/ruby/2.1.0/gems/excon-0.55.0/lib/excon/connection.rb:388:in `response'

from /home/.gem/ruby/2.1.0/gems/excon-0.55.0/lib/excon/connection.rb:252:in `request'

from /home/.gem/ruby/2.1.0/gems/fog-xml-0.1.3/lib/fog/xml/sax_parser_connection.rb:35:in `request'

from /home/.gem/ruby/2.1.0/gems/fog-xml-0.1.3/lib/fog/xml/connection.rb:7:in `request'

from /api/lib/fog/aws/compute.rb:528:in `_request'

from /api/lib/fog/aws/compute.rb:523:in `request'

Doing through CLI(works fine):

$ aws ec2 modify-volume --region ap-south-1 --volume-id vol-xxxxxxxxxxxxxxxx --size 5

{
    "VolumeModification": {
        "TargetSize": 5, 
        "TargetVolumeType": "gp2", 
        "ModificationState": "modifying", 
        "VolumeId": "vol-xxxxxxxxxxxxxxxx", 
        "TargetIops": 100, 
        "StartTime": "2017-05-03T15:21:01.444Z", 
        "Progress": 0, 
        "OriginalVolumeType": "gp2", 
        "OriginalIops": 100, 
        "OriginalSize": 4
    }
}

[geemus]

@ehowe I believe you added this, any insights into what might be going wrong?

[ehowe]

The required API version is 2016-11-15 which I did update at some point (seems that it was with a different commit than when I added this), but that is the error that you would get if you were using an old API version. @maheshb-cuelogic are you explicitly passing in an API version by chance?

[geemus]

@ehowe ah, yeah that makes sense. Thanks for the update.

@maheshb-cuelogic you may want to ensure you have the latest fog-aws also, as it may be you have a version with the new method, but not the new API version (since they didn't occur at the same time).

[chanakyacool]

@ehowe , @geemus

• I too believe that the api_version when triggered modify_volume could be older than 2016-11-15 , i;e it would be 2014-10-01
• if the version has been explicitly changed or fog/aws/compute.rb has different version than 2016-11-15 , please update the files to latest version and try again
• @maheshb-cuelogic , please confirm and close if it works

[maheshb-cuelogic]

Thanks guys. It was version issue. I am closing it.

[geemus]

@maheshb-cuelogic thanks for the update, glad it's working for you.