Inconsistent error while creating instances

[Gaurav Aradhye]

Hi,

I am getting following error while creating instances through test cases.
The error is not reproducible each time, but the typical scenario is while
creating two or more instances consecutively.

Error info says "*Bootloader.Bad_error*"

The error is produced for each available host, eventually adding that host
to "Avoid Set" and finally it fails to create the instance because every
host is in avoid set and the management log gives exception -
"InsufficientServerCapacityException".

Has anybody encountered this error before? It will be great if someone can
provide directions on this.

*Error details:*
*
*
WARN [xen.resource.CitrixResourceBase] (DirectAgent-155:null) Unable to
start i-553-469-QA due to
com.cloud.utils.exception.CloudRuntimeException: Unable to start
VM(i-553-469-QA) on host(35d9b483-9a19-4a91-a0a6-bfe138e79db4) due to Task
failed! Task record:
                 uuid: 9e350b27-f9a5-30c0-bad8-d23bc7f80568
           nameLabel: Async.VM.start_on
     nameDescription:
   allowedOperations: []
   currentOperations: {}
             created: Sun May 12 17:58:14 PDT 2013
            finished: Sun May 12 17:58:19 PDT 2013
              status: failure
          residentOn: com.xensource.xenapi.Host@5848f813
            progress: 1.0
                type: <none/>
              result:
           errorInfo: [INTERNAL_ERROR, xenopsd internal error: VM =
1110c003-1d45-5ab5-226f-952aa95630a0; domid = 393; Bootloader.Bad_error
Traceback (most rece
nt call last):
  File "/usr/bin/pygrub", line 900, in ?
    fs = fsimage.open(file, part_offs[0], bootfsoptions)
IOError: [Errno 95] Operation not supported
]
         otherConfig: {}
           subtaskOf: com.xensource.xenapi.Task@aaf13f6f
            subtasks: []


Regards,
Gaurav Aradhye