Hyper-V backups may fail with volsnap errors

SUMMARY

Hyper-V backups may fail with volsnap errors.

ISSUE

Hyper-V backups may fail with volsnap errors. 

RESOLUTION

To resolve this issue, upgrade your appliance to version 10.3 or later. 

CAUSE

Two issues may contribute to the above symptoms:

  1. The Hyper-V Virtual Disk can grow larger than the expected maximum size.
  2. Failure to ignore incremental data preceding VHD or VHDX files for a particular vdisk in the backup group. 

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