We have recently upgraded the Veeam Backup & Replication to version 9.5 Update 4 and we got trouble on backing windows 2012 Hyper-V cluster VMs.The error was related “application-aware processing may fail with the error “The system cannot find the file specified”.”
Error
Processing “VMName” Error: The system cannot find the file specified. Failed to open file [\\?\GLOBALROOT\Device\CSV{e72144ea-ef3e-475b-88b9-733771799784}\VMNAME\Snapshots\F68A0FFE-F6AC-4605-9B55-B80DB89098B3.xml] in readonly mode. Failed to open file [\\?\GLOBALROOT\Device\CSV{e72144ea-ef3e-475b-88b9-733771799784}\VMNAME\Snapshots\F68A0FFE-F6AC-4605-9B55-B80DB89098B3.xml] for reading.
Cause
This issue is caused by the snapshot path in the VM ‘s configuration being different from the actual path on a file system in terms of symbols capitalization. You can confirm this by comparing paths in bold in the Task.<VM NAME>.<VM UUID>.log file:
[22.01.2019 19:39:09] <28> Info [AP] (65e8) output: <snapshots>
[22.01.2019 19:39:09] <28> Info [AP] (65e8) output: <data_root type=”string”>C:\Temp\<VM name></data_root>
[22.01.2019 19:39:09] <28> Info [AP] (65e8) output: <list>
[22.01.2019 19:39:09] <28> Info [AP] (65e8) output: <size type=”integer”>0</size>
[22.01.2019 19:39:09] <28> Info [AP] (65e8) output: </list>
[22.01.2019 19:39:09] <28> Info [AP] (65e8) output: </snapshots>
[22.01.2019 19:39:09] <11> Info [AP] (65e8) command: ‘file2text\n\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy16\temp\<VM NAME>\Snapshots\<VM UUID>.xml\n2097152\n’
[22.01.2019 19:39:10] <10> Info [ReconnectableSocket] Stop confirmation was sent on [c1d84e94-b09b-4039-a8dc-4973e12934fc].
[22.01.2019 19:39:10] <23> Error [AP] (65e8) error: The system cannot find the file specified.
[22.01.2019 19:39:10] <23> Error Failed to open file [\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy16\temp\<VM NAME>\Snapshots\<VM UUID>.xml] in readonly mode.
Solution
There are two methods for correcting this issue depending on your preference:
Change the snapshot path in VM configuration manually
Install a hotfix for Veeam Backup & Replication 9.5 Update 4 (build 9.5.4.2615):
N0te:- Ensure that all jobs are in a stopped state before procceding this step
Conclusion
We have followed the steps mentioned on the Veeam KB and the issue fixed.
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