Question

POC with errors in some Hyper-V CSV VMs


HI,

We are doing a POC on client with all instalation parameters OK. There are 3 CSV volumes and on volume02 with 104TB all VM backup failed with this error:

 

Failed to create snapshot (Microsoft CSV Shadow Copy Provider) (mode: Crash consistent) Details: Unknown status of async operation
Vss error: '0x80042306'

 

Only with this CSV Volume.

Does anyone have any idea?

Thanks
Weberth Moreira


3 comments

Userlevel 7
Badge +6

Don't use Hyper-V much but found these two things that might help -

https://ajmckean.com/veeam-failed-to-prepare-hyper-v-guests-for-volume-snapshot/

https://www.veeam.com/kb1846

 

Userlevel 5
Badge

If this is happening only for one volume probably is something related to create the volume shadow copy for this volume.

Try create manually and see if works: https://www.veeam.com/kb1980

Userlevel 7
Badge +3

Alternatively, you can run the following in an elevated command prompt:

vssadmin list providers

This will display if any of the writers are in an error status

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