Thursday, January 10, 2013

"An unknown error occurred" may occur when backing up to tape on a server with the HP Server Management Agents Software installed.


Problem


"An unknown error occurred" may occur when backing up to tape on a server with the HP Server Management Agents Software and/or HP StorageWorks Managements Software installed.

Error


0xe00084f4 - An unknown error has occurred
 
Completed status: Failed
Final error: 0xe00084f4 - An unknown error has occurred.
Final error category: System Errors
For additional information regarding this error refer to link V-79-57344-34036
UMI code :V-79-57344-34029

Cause


The SCSISTAT_QUEUE_FULL error is often caused by a conflict with the HP Insight Server Management Agent software or the HP StorageWorks VDS Hardware Providers for MSA Disk Arrays software.  This condition can be confirmed by running TRACER.EXE and performing a SCSI trace on the failing hardware.  See related documents for more information on how to use TRACER.EXE.

The following SCSISTAT_QUEUE_FULL error will be seen on a WRITE6 command (Figure 1):
 
Figure 1
 

 
The STATUS_DEVICE_NOT_CONNECTED error may also be caused as the Driver Result (Figure 2):

Figure 2


When getting the STATUS_DEVICE_NOT_CONNECTED error, the Device error 1167 is reported in the adamm.log.
Note: The SCSI trace in the adamm.log does not report the Driver Result.

[7832] 11/12/12 00:18:44.225 DeviceIo: 04:07:00:00 - Device error 1167 on "\\.\Tape0", SCSI cmd 4d, 1 total errors
[3312] 11/12/12 00:19:50.400 PvlDrive::DisableAccess() - ReserveDevice failed, offline device
       Drive = 1023 "TapeDRV1"
       ERROR = 0x0000001F (ERROR_GEN_FAILURE)
[3312] 11/12/12 00:19:50.400 PvlDrive::UpdateOnlineState()
       Drive = 1023 "TapeDRV1"
       ERROR = The device is offline!
 ...
SCSI: ==========================================================================
SCSI: CDB 04:07:00:00 Start 00:18:44.225 End 00:18:44.225 Duration 0.000000
SCSI: Function                                SRB_FUNCTION_EXECUTE_SCSI
SCSI:
 
SCSI: Raw CDB
SCSI: 4D 00 71 00 00 00 00 00 24 00                   M.q.....$.
SCSI:
 
SCSI: CDB Operation                           LOG_SENSE
SCSI:  LUN                                    0
SCSI:  PPC                                    False
SCSI:  SP                                     False
SCSI:  Parameter pointer                      0
SCSI:  Alloc length                           36
SCSI:  Control                                0x00
SCSI: Data
SCSI: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
SCSI: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
SCSI:
 
SCSI:
 
SCSI: Capture dropped 2838409 events
SCSI: Capture dropped 6059 events
SCSI: Capture dropped 3314492 events
[3312] 11/12/12 00:19:50.697 End dump of device SCSI history
 


Solution



1.  Install the latest version of HP Insight Agents and test another backup.

 
2.  If the server is Windows 2003, upgrade to the latest StorPort driver. 
 
Link: http://support.microsoft.com/kb/932755. Try the backup again. 
 

3.  Run the StorageWorks Library and Tape Tools (L&TT) and run a 100GB backup test.
 
 
A. Download and install the latest version of L&TT -  http://www.hp.com/support/tapetools 
 
B. Stop the Backup Exec services. 
 
C. Insert a scratch tape into the drive.  ****Important! This needs to be a scratch tape as the HP L&TT test will overwrite the data on the tape.
 
D. Select the drive that you want to test under the "By Product" tab. 
 
E. Click on the TEST icon at the top of the window.
 
F. Drill down to READ/WRITE test in the TEST GROUP FIELD.
 
G. Click on the Options button.
 
H. The Options window will open. You can double click on the "Amount of data written/read in each phase" and change the amount of data to the 100 GB.
 

The L&TT test will now write 100GB of test data to the drive. If this test fails, then contact HP Technical Support for further troubleshooting. 


4. Increase BusyRetryCount and test another backup.
Please refer to TECH163202 to increase BusyRetryCount.


5. Disable the HP Management Agents.

 
Go to Control Panel > HP Management Agents, select the Services tab, then move SCSI Information to the Inactive Agents column.  Retry the backup job. 
 
If it still fails, try moving the performance monitor agent to the disabled column and try the backup again. 


6. Disable the following HP services, and reboot the server and test another backup.  

   -  HP Insight Server Agents
   -  HP Insight Storage Agents
   -  HP Insight Foundation Agents
   -  HP WMI Storage Providers service

NOTE: Not all Four services may be present. Only disable what is listed above as these services conflict with the symantec drivers which are updated for tape drives.

7.  Uninstall the HP StorageWorks VDS Hardware Providers for MSA Disk Arrays software and test another backup. 
This software is installed on HP Storage Servers by default. This software may not be listed in Control Panel > Uninstall a program. Please contact HP Technical Support to uninstall this program.

8.  Uninstall the HP Insight Manager software
 and test another backup. 

9. If there is any third party backup software which is not in use may block the tape device and may cause conflict. Uninstall and test another backup.

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