OS X Lion diskutil commands (documented and hidden)

strings `which diskutil` | grep Usage

Usage:  diskutil coreStorage list
Usage:  diskutil coreStorage info[rmation] [-plist]
Usage:  diskutil coreStorage convert
Usage:  diskutil coreStorage revert
Usage:  diskutil coreStorage create lvgName
Usage:  diskutil coreStorage delete lvgUUID
Usage:  diskutil coreStorage addDisk lvgUUID NewMemberDeviceName
Usage:  diskutil coreStorage removeDisk pvUUID
Usage:  diskutil coreStorage deleteVolume lvUUID
Usage:  diskutil coreStorage resizeVolume lvUUID size
Usage:  diskutil coreStorage resizeDisk pvUUID size
Usage:  diskutil coreStorage resizeStack lvUUID size
Usage:  diskutil coreStorage unlockVolume lvUUID
Usage:  diskutil coreStorage changeVolumePassphrase|passwd lvUUID
Usage:  diskutil coreStorage createVolume lvgUUID type name size
Usage:  diskutil enableJournal MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil disableJournal [force] MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil moveJournal internal MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil moveJournal external
Usage:  diskutil verifyVolume MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil repairVolume MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil verifyDisk MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil repairDisk MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil verifyPermissions [-plist] MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil repairPermissions [-plist] MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil resetUserPermissions MountPoint|DiskIdentifier|DeviceNode UID
Usage:  diskutil listUsers MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil info[rmation] [-plist]
Usage:  diskutil list [-plist] [MountPoint|DiskIdentifier|DeviceNode]
Usage:  diskutil listFilesystems [-plist]
Usage:  diskutil activity
Usage:   diskutil mount [readOnly] [-mountPoint Path] DiskIdentifier|DeviceNode
Usage:   diskutil mountDisk DiskIdentifier|DeviceNode
Usage:   diskutil u[n]mount [force] MountPoint|DiskIdentifier|DeviceNode
Usage:   diskutil u[n]mountDisk [force] MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil eject MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil rename[Volume] MountPoint|DiskIdentifier|DeviceNode newName
Usage:  diskutil enableOwnership MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil disableOwnership MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil eraseDisk format name [[APM]Format|[MBR]Format|[GPT]Format]
Usage:  diskutil eraseVolume format name MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil reformat MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil eraseOptical [quick] MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil zeroDisk MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil randomDisk [times] MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil secureErase [freespace] level MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil partitionDisk MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil mergePartitions [force] format name
Usage:  diskutil splitPartition MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil resizeVolume MountPoint|DiskIdentifier|DeviceNode size
Usage:  diskutil appleRAID create mirror|stripe|concat setName
Usage:  diskutil appleRAID delete
Usage:  diskutil appleRAID list [RAIDSetUUID]
Usage:  diskutil appleRAID enable mirror|concat MountPoint|DiskIdentifier|DeviceNode
Usage:  diskutil appleRAID repairMirror
Usage:  diskutil appleRAID update key value
Usage:  diskutil appleRAID add member|spare
Usage:  diskutil appleRAID remove MemberDeviceName|MemberUUID