| Ticket Hash: | 5e10420e8de26a086cd0f532643bedbfa94921e0 | ||
| Title: | Free-list corruption in incremental-vacuum mode | ||
| Status: | Fixed | Type: | Code_Defect |
| Severity: | Severe | Priority: | Immediate |
| Subsystem: | Unknown | Resolution: | Fixed |
| Last Modified: |
2010-08-23 17:08:42 14.87 years ago |
Created: |
2010-08-23 15:35:09 14.87 years ago |
| Version Found In: | 3.7.1 | ||
| Description: | ||||
Running an incremental vacuum can result in free-list corruption in an obscure case. The case is hit if the incremental vacuum code attempts to extract the second of two empty free-list trunk pages (trunk pages with no references to free-list leaves), and the page extracted is not the last trunk page in the free-list. Running integrity-check after this occurs produces output similar to: <verbatim> *** in database main *** Main freelist: invalid page number 258 Page 6 is never used Page 7 is never used Page 8 is never used Page 9 is never used Page 10 is never used Page 11 is never used Page 12 is never used Page 13 is never used ... </verbatim> This problem first appeared in 3.6.16. <hr><i>drh added on 2010-08-23 17:08:42:</i><br> Fixed by check-in [255f1eefa373153942c67b18b22177933657911d] | ||||