Discussions specific to the Microsoft Hyper-V hypervisor
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cgeorge
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Full Name: Carol George
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Failed to prepare for backup Another shadow copy creation is

Post by cgeorge » Jun 01, 2018 7:15 am

We recently started using our hyper v cluster (4 host) windows 2012 r2.
I setup a test backup with 4 vm's to use an off-host server.
Why does it try to create vss hardware provider snapshot for eacht vm on our storage.
And why do I also receive this issue for 2 of my 4 vm's that I triy to backup

Code: Select all

Failed to create snapshot HP 3PAR VSS Provider on hv-dco01-vbpxy (mode: Crash consistent) Details: 
Failed to prepare for backup Another shadow copy creation is already in progress. 
Wait a few moments and try again. --tr:Failed to create VSS snapshot. --tr:Failed to perform pre-backup tasks.
Retrying snapshot creation attempt (Failed to prepare for backup Another shadow copy creation is already in progress. 
Wait a few moments and try again. --tr:Failed to create VSS snapshot. --tr:Failed to perform pre-backup tasks.)

Vitaliy S.
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Full Name: Vitaliy Safarov
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Re: Failed to prepare for backup Another shadow copy creatio

Post by Vitaliy S. » Jun 06, 2018 4:22 pm

Hello Carol,

To investigate the issue deeper, you need to contact our technical support team. As regards, multiple snapshots for VMs being backed up, then where do these VMs reside on? Are they located on the same hyper-v host or on different ones?

Thank you!

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