問題文
The root filesystem filled up overnight on a logging host. The operator deleted a large log file, but the free space did not increase. What explains this?
選択肢
- A process still holds the deleted file open, so the space is not released until that process closes the descriptor or is restarted.
- The log rotation configuration re-created the file at its previous size.
- The reserved block percentage absorbs the freed space, because reserved blocks are replenished from any newly freed space before the free count is updated, and the reserve must be reduced with the filesystem tuning tool to see the space.
- The filesystem needs a consistency check before the freed blocks are counted, so the space appears after the next check, and a scheduled check at the next boot shows the full amount recovered.