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Clustered VM backup error Call RPC Function FcWriteFileEx ehe requested resource is in use

  • February 19, 2022
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Using backup and replication v11 backup job of one vm in a Hyper-v cluster. I get the error 

2/18/2022 4:47:49 PM :: Failed to pre-process the job Error: Failed to call RPC function 'FcWriteFileEx': The requested resource is in use. Failed to flush file buffers. File: [E:\Backups\Backup Job\Backup Job.vbm_1_tmp].  

 

Then this error

2/18/2022 4:47:50 PM :: Error: Failed to call RPC function 'FcWriteFileEx': The requested resource is in use. Failed to flush file buffers. File: [E:\Backups\Backup Job\Backup Job.vbm_1_tmp].  
 

Best answer by MicoolPaul

Hi,

 

Something else is touching your file at the same time, most likely antivirus, make sure all AV products (even good old Windows Defender) are configured according to: https://www.veeam.com/kb1999

 

I can see the disk is being referenced by a local drive letter so it shouldn’t be any issues with accessing a network device, but if you have got a volume being presented with a local disk that is actually network storage (thinking iSCSI/FC storage) then you may be over-saturating the network and need to reduce task concurrency or cap the maximum MBps being written to the disk.

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MicoolPaul
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  • 2364 comments
  • Answer
  • February 19, 2022

Hi,

 

Something else is touching your file at the same time, most likely antivirus, make sure all AV products (even good old Windows Defender) are configured according to: https://www.veeam.com/kb1999

 

I can see the disk is being referenced by a local drive letter so it shouldn’t be any issues with accessing a network device, but if you have got a volume being presented with a local disk that is actually network storage (thinking iSCSI/FC storage) then you may be over-saturating the network and need to reduce task concurrency or cap the maximum MBps being written to the disk.


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