Comment 3 for bug 1056122

For euca-describe-instances, if a instance is attached to volume, but attach_time filed is NULL, then '-' is appended to attach-time XML attribute.
Eg:
<ebs><status>in-use</status><deleteOnTermination>false</deleteOnTermination><volumeId>29</volumeId><attachTime>-</attachTime></ebs>

Can we replace '-' to ''(0 length string).