TheJoJo

Solved in the Unraid Discord! Thanks. Explanation below in case anyone comes across this looking for the solution:

As of this past month, my backups seem to be failing. No issues prior to now. Debug Log saying "No space left on device" but my array has about 500GB free, so I'm not sure where that's coming from. Any insight is appreciated! The backup is .You can find the normal log at: /tmp/appdata.backup/ab.log You can find the debug log at: /tmp/appdata.backup/ab.debug.log You are currently viewing the debug log! [02.04.2026 13:38:08][ℹ️][Main] 👋 WELCOME TO APPDATA.BACKUP!! :D [02.04.2026 13:38:08][debug][Main] plugin-version: 2026.03.13 [02.04.2026 13:38:08][debug][Main] unraid-version: Array ( [version] => 7.0.1 ) [02.04.2026 13:38:08][debug][Main] Not executing script: Not set! [02.04.2026 13:38:08][ℹ️][Main] Backing up from: /mnt/user/appdata, /mnt/cache/appdata [02.04.2026 13:38:08][ℹ️][Main] Backing up to: /mnt/user/backups/app_data_backups/ab_20260402_133808 [02.04.2026 13:38:08][debug][Main] PHP-ERROR occured! 2 / mkdir(): No space left on device /usr/local/emhttp/plugins/appdata.backup/scripts/backup.php:80 [02.04.2026 13:38:08][❌][Main] Cannot create destination folder! [02.04.2026 13:38:08][ℹ️][Main] Checking retention... [02.04.2026 13:38:08][debug][Main] toKeep after slicing: Array ( [0] => /mnt/user/backups/app_data_backups/ab_20260325_020001-failed [1] => /mnt/user/backups/app_data_backups/ab_20260324_020001 [2] => /mnt/user/backups/app_data_backups/ab_20260323_020001 ) [02.04.2026 13:38:08][debug][Main] Delete backups older than 20260326_133808 [02.04.2026 13:38:08][debug][Main] Cannot create date from ab_20260325_020001-failed [02.04.2026 13:38:08][debug][Main] Discarding /mnt/user/backups/app_data_backups/ab_20260324_020001, because its newer or already in toKeep [02.04.2026 13:38:08][debug][Main] Discarding /mnt/user/backups/app_data_backups/ab_20260323_020001, because its newer or already in toKeep [02.04.2026 13:38:08][debug][Main] Resulting toKeep: /mnt/user/backups/app_data_backups/ab_20260325_020001-failed, /mnt/user/backups/app_data_backups/ab_20260324_020001, /mnt/user/backups/app_data_backups/ab_20260323_020001, /mnt/user/backups/app_data_backups/ab_20260325_020001-failed [02.04.2026 13:38:08][debug][Main] Resulting deletion list: [02.04.2026 13:38:08][ℹ️][Main] DONE! Thanks for using this plugin and have a safe day ;) [02.04.2026 13:38:08][ℹ️][Main] ❤️ [02.04.2026 13:38:09][debug][Main] PHP-ERROR occured! 2 / copy(/mnt/user/backups/app_data_backups/ab_20260402_133808/backup.log): Failed to open stream: No such file or directory /usr/local/emhttp/plugins/appdata.backup/scripts/backup.php:384 [02.04.2026 13:38:09][debug][Main] PHP-ERROR occured! 2 / copy(/mnt/user/backups/app_data_backups/ab_20260402_133808/config.json): Failed to open stream: No such file or directory /usr/local/emhttp/plugins/appdata.backup/scripts/backup.php:385 [02.04.2026 13:38:09][debug][Main] Not executing script: Not set!