Image Datastore does not support transfer mode: ssh

Have accidentally found the way how to solve that:

  1. Create qcow2 storage
  2. Change TM_MAD from qcow2 to shared -> extra attributes related to ssh will be added.
  3. Change TM_MAD back to qcow2

This sequence will create following attributes:
CLONE_TARGET_SSH = SYSTEM
DISK_TYPE_SSH = FILE
LN_TARGET_SSH = SYSTEM
TM_MAD_SYSTEM = ssh

Exactly same approach should be made when creating storage for ‘Raw Device Mapping’ (for other storage backends probably too).
Described issues reproduced on testing system also.
Could be that 5.8.0 version contains bug related to storage (some default values are not set). Would be nice that support could add their comments regarding that.