[Starcluster] InvalidInstanceID.NotFound on Disk Creation

[Justin Riley]

Hi Austin,

Yes the VolumeCreator class shuts down all instances in the @sc-volumecreator security group after successful creation of a volume by default. If you run two volume creator sessions at the same time they will attempt to use the same host. Whichever finishes first will shutdown the instance (unless you tell it not to) which breaks things for the other session. If you want to run two volume creator sessions at the same time you should pass the --no-shutdown option to the createvolume command or use shutdown_instance=False in the VolumeCreator class's constructor if you're using the class directly. After the volumes have been created successfully you can run the following command to shut down the volume host instance(s):

$ starcluster stop volumecreator

Hope that helps,

~Justin
________________________________________
From: starcluster-bounces at MIT.EDU [starcluster-bounces at MIT.EDU] On Behalf Of Austin Godber [godber at uberhip.com]
Sent: Sunday, August 22, 2010 7:55 PM
To: starcluster at mit.edu
Subject: [Starcluster] InvalidInstanceID.NotFound on Disk Creation

Has anyone else seen an InvalidInstanceID error when creating a disk?

I got the following error when creating a disk:

volume.py:186 - ERROR - exception thrown: EC2ResponseError: 400 Bad Request
<?xml version="1.0"?>
<Response><Errors><Error><Code>InvalidInstanceID.NotFound</Code><Message>The
instance ID 'i-913c54fb' does not
exist</Message></Error></Errors><RequestID>XXXXXX</RequestID></Response>

The instance definitely started since I see it as terminated in my AWS
console.  Oh, I bet I know what happened.  I was actually creating TWO
disks at the same time.  I bet that disk creation shuts down all
instances in the @sc-volumecreator group.  And when the first one was
killed, the second one was killed along with it.

Austin
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