i have a Hyper-v 2012 R2 Cluster with 4 Nodes and a Red Hat 7.3 VM.
I want backup the the Red Hat 7.3 VM in Hyper-V child partion snapshot mode. But it failed all time with this error:
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Failed to create snapshot (Microsoft CSV Shadow Copy Provider) (mode: Hyper-V child partition snapshot) Details: Writer 'Microsoft Hyper-V VSS Writer' is failed at 'VSS_WS_FAILED_AT_PREPARE_SNAPSHOT'.
The writer experienced a non-transient error. If the backup process is retried,
the error is likely to reoccur.
--tr:Failed to verify writers state.
--tr:Failed to perform pre-backup tasks.
So i try the backup in Brash consistent mode it work fine.
I have CentOS 7 and update it to 7.3 with manual installed LIS. Here the Backup work fine on a other 2012 R2 Cluster in Hyper-V child partition snapshot mode.
Have someone a Idea or a similarly problem?