ldminfo
Code updated to compile and work on x86_64 Linux and Cygwin tested on 2TB drives and test images from libldm see: https://github.com/mdbooth/libldm/blob/master/test/data/ldm-data.tar.xz
The LDM driver is in the kernel and not included here
The kernel LDM driver prints some warnings on certain dyanmic (LDM) disks The errors may be safe to ignore and hopefully ldminfo can help troubleshoot.
I am not an expert in LDM disks but these tools have help with troubleshooting Windows dynamic disks.
ldmutil is another utility and includes a utility for creating sparse LDM disk images https://github.com/jpmorrison/ldm (forked from flatcap)
John Paul