Yet I managed to trash ODM on our RS/6000 cluster in 1992 or so, so that the metadata AIX had was inconsistent with the quorum of binary metadata stored on special partition tables on disks. Had to low-level format the disks and start over (the 857MB SCSI disks about as expensive as a compact car).
What's perhaps unknown to many is that the Linux volume manager was/is a straight clone of AIX's, with IBM terminology like logical volumes, physical volumes, and so on (the terminology itself being an extension of IBM's naming scheme on z/OS aka MVS, eg "logical/physical partition" for VMs with reserved channel bandwidth etc). Whereas FreeBSD's vinum was a clone of Veritas (in vinum veritas).
:) ah, spotted the Latin teacher! yeah no it was entirely my fault to mis-/non-decline vinum; though "in vinum" (in + accusative) actually has a valid use as well and not just in medieval Latin, like in "put the truth into the wine" which actually is as good a word-play for vinum the volume manager as "in vino veritas"
What's perhaps unknown to many is that the Linux volume manager was/is a straight clone of AIX's, with IBM terminology like logical volumes, physical volumes, and so on (the terminology itself being an extension of IBM's naming scheme on z/OS aka MVS, eg "logical/physical partition" for VMs with reserved channel bandwidth etc). Whereas FreeBSD's vinum was a clone of Veritas (in vinum veritas).