Problem enabling journaling in order to resize partitions on an external drive (Mac)
Note that if you do:

diskutil disableJournal disk1s2


and you get:

An error occurred journaling the file system: The underlying task reported failure on exit (-69860)


the journaling is in fact disabled. The error is bogus. Eject and remount, and you'll see journaling is now off. Does knowing this help you?