func detachVolumes(client *ec2.EC2, attachParams []storage.VolumeAttachmentParams) ([]error, error) {
results := make([]error, len(attachParams))
for i, params := range attachParams {
_, err := client.DetachVolume(params.VolumeId, string(params.InstanceId), "", false)
// Process aws specific error information.
if err != nil {
if ec2Err, ok := err.(*ec2.Error); ok {
switch ec2Err.Code {
// attachment not found means this volume is already detached.
case attachmentNotFound:
err = nil
}
}
}
if err != nil {
results[i] = errors.Annotatef(
err, "detaching %v from %v", params.Volume, params.Machine,
)
}
}
return results, nil
}