# Repair and Rebuild database fails: Unexpected difference in fileset

**URL:** https://forum.duplicati.com/t/repair-and-rebuild-database-fails-unexpected-difference-in-fileset/5959
**Category:** Support
**Created:** [January 10, 2019, 10:22am UTC](https://forum.duplicati.com/t/repair-and-rebuild-database-fails-unexpected-difference-in-fileset/5959 "2019-01-10T10:22:55Z")
**Posts on this page:** 1
**Showing post:** 10

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### Author: ![ts678](https://forum.duplicati.com/letter_avatar_proxy/v4/letter/t/8491ac/32.png) [@ts678](https://forum.duplicati.com/u/ts678)
#### Post date: [January 22, 2019, 1:40pm UTC](https://forum.duplicati.com/t/repair-and-rebuild-database-fails-unexpected-difference-in-fileset/5959/10 "2019-01-22T13:40:34Z")

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I probably should have requested --snapshot-policy=required instead of `on` because `on` keeps going with a warning, if snapshot can’t be done. If you’re sure a warning didn’t happen, then unfortunately it might come down to trimming the backup to not backup the area that’s causing the problem, which might require using [–log-file](https://duplicati.readthedocs.io/en/latest/06-advanced-options/#log-file) to see the line after the one in the summary. Possibly About --\> Show log --\> Live --\> Error will do.

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