I’ve been running into issues trying to run a restore on our Staging Discourse instance. Staging is running v2.4.0.beta1 +36 . Any idea where the breakdown might be or where to look? Thanks in advance! Below is the end of the log output: [2019-07-16 20:08:12] ALTER TABLE [2019-07-16 20:08:12] ALTER…

Discourse keeps a backup schema so it can roll back when a restore goes bad. You can go into your Postgres and issue drop schema backup cascade; If you don’t know how to do that you shouldn’t probably be doing it.

I did on the old server. Restoring I got the same error [2026-01-16 13:45:52] EXCEPTION: 3 posts are not remapped to new S3 upload URL. S3 migration failed for db ‘default’. [2026-01-16 13:45:52] /var/www/discourse/lib/file_store/to_s3_migration.rb:132:in `raise_or_log’

[imagen] Saiano: This check gave me 0 errors Well. Darn. Not sure what else to tell you. Did the good find your uploads? I’d probably just use the --pause switch and stop the restore before it does that check. I’d do what Richard said.

I’m not sure about your exact situation but you might simply want to turn off s3 uploads, make the backup, restore, and turn it on again. This has saved me many times.

So, I have to turn off this options, correct? [image]

Correct. uncheck “enable s3 uploads” backup / download upload / restore check “enable s3 uploads”

[imagen] RGJ: Correct. uncheck “enable s3 uploads” backup / download upload / restore check “enable s3 uploads” While checking “enable s3 uploads” I got an error [IMG_8462]

I don’t speak Italian when it’s not about food… maybe you can do us all a favor and copy/paste it into Google Translate :slight_smile:

[imagen] RGJ: I don’t speak Italian when it’s not about food… maybe you can do us all a favor and copy/paste it into Google Translate :slight_smile: Sorry Enable S3 uploads Stores uploads on Amazon S3 disk space. IMPORTANT: requires valid S3 credentials to be provided (both the access key I…

I assume you already did it in app.yml then. Are (new) uploads working correctly? If so, then there is no issue.

[imagen] RGJ: I assume you already did it in app.yml then. Are (new) uploads working correctly? If so, then there is no issue. In app.yml I have s3 configured, correct. So, what I have to do to safely backup and restore without checking uploads? Simply uncheck “enable s3 uploads” doesn’t w…

Proceso de restauración cancelado en el paso de migración de cargas a S3

Soporte

Saiano (Saiano) 24 Enero, 2026 15:43 52

Muchas gracias, funciona.

Tema		Respuestas	Vistas
Restore failed at "EXCEPTION: x of y uploads are not migrated to S3. S3 migration failed for db 'default'." Self-hosting	4	1128	10 Junio 2022
Restore from backup fails due to S3 migration Support	8	1331	10 Septiembre 2019
Restore to New Host Support	13	668	15 Enero 2026
Intended path to migrate S3 to local Self-hosting uploads , s3	5	888	13 Mayo 2023
Unable to migrate to S3, therefore unable to restore from backup Self-hosting	2	1236	9 Marzo 2022

Proceso de restauración cancelado en el paso de migración de cargas a S3

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