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
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/
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
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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