Where is the journal on the Extended file system?

Question

Where exactly is the journal on the EXT3/EXT4 file system, ive searched around and cant find a good answer.

Answer 1

To the best of my knowledge, it is a regular file controlled by an inode, but the inode does not have a directory entry. If you do tune2fs -l /dev/$ext3partition it will mention the "Journal inode" -- usually it seems to be number 8. You should be able to use debugfs to get more details.