Servers running the FSA Agent may bluescreen when backup jobs are performed using VSS
| Article:TECH172517 | | | Created: 2011-10-24 | | | Updated: 2012-06-20 | | | Article URL http://www.symantec.com/docs/TECH172517 |
Problem
Bluescreens may occur intermittently on servers running the FSA Agent when these servers are being backed up by a backup application using Microsoft Volume Shadow Copy Service (VSS).
Error
A crash dump analysis in Microsoft WINDBG shows the following.
SYMBOL_NAME: evmf!EvWorkerGetDosVolumeName+323
FOLLOWUP_NAME: MachineOwner
MODULE_NAME: evmf
IMAGE_NAME: evmf.sys
DEBUG_FLR_IMAGE_TIMESTAMP: 4e0c4fcd
STACK_COMMAND: .cxr 0xfffff88002b16110 ; kb
FAILURE_BUCKET_ID: X64_0x7E_evmf!EvWorkerGetDosVolumeName+323
BUCKET_ID: X64_0x7E_evmf!EvWorkerGetDosVolumeName+323
Solution
This issue has been addressed in the following release:
Enterprise Vault 9.0.4
http://www.symantec.com/docs/TECH147785
Note: This registry value is already present in Enterprise Vault 10.0 and as such the root cause of the issue is resolved in this version.
Workaround:
1. Open the registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\EvFilter on the affected File Server
2. Right click in the right pane and select "New -> DWORD value" Enter the name as "IncrementVPBCount" and set the value as "1"
3. Restart the machine.
Alternatively, modify the backup application so that VSS is not used in the backup job.
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| Source | ETrack |
| Value | 2591882 |
Article URL http://www.symantec.com/docs/TECH172517
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