Qubes OS release

4.1.0-rc3

Brief summary

Sporadic but majority failed restores (or corrupted backups) on 4.1x installations. Any size backup, small or large. Using Btrfs. Restoring on same version of Qubes, same and different systems.
Will restore AppVM but contain no data. Will display an error but conclude with "Finished successfully!", when it has not.

Only one reference to the same issue from 2017 found here https://groups.google.com/g/qubes-users/c/0i7RfWhoCxU

Backups and data do appear to restore successfully if running qvm-backup-restore --ignore-size-limit via dom0.

Forum issue discussion here - https://forum.qubes-os.org/t/backups-are-corrupted-on-restore/8446

Steps to reproduce

Create a backup and restore it.

Expected behavior

Successful restore containing all data with no errors.

Actual behavior

Restores empty AppVM containing no data, and errors contained in the output.

Unable to extract files, unexpected EOF in archive tar, retrieved data backup size exceed expected size