Querying partitionmananger --help does not document any verbose mode. Even gparted --help is not implemented. I wish I could use any --verbose mode without more esoteric thingy like using ltrace, because unless checking their sources one can not know if they resort only on libparted or some operations are performed using system commands, hence not being traced.
I don't know nesting strace on ltrace or vice-versa... I guess that would be a lot of standard output?
How to learn what gparted, partitionmanager... libcalls or fdisk, parted... commands are wrapping? I want to learn to use parted and fdisk in order not to need to rely on GUI interfaces such as gparted or partitionmanager, as I currently more or less know how to use the lvm suite of operations but not the more arcane fdisk and parted, but I guess it should help a lot watching actual examples of parted, fdisk and libparted being invoked by the user use of, for instance, gparted.