1. A particular image processing apparatus which is included in a virtual device that is constructed of a plurality of real image processing apparatuses and can cooperatively utilize functions of the plurality of real image processing apparatuses, the particular image processing apparatus comprising: a determination unit configured to determine, by referring to virtual job configuration information, whether to acquire a content log on the particular image processing apparatus, in performing a virtual job including image forming processing which is processed by cooperatively using the functions of the plurality of real image processing apparatuses included in the virtual device; and an acquisition unit configured to acquire the content log of the virtual job if the determination unit determines that the particular image processing apparatus is to acquire the content log, wherein the acquisition unit acquires the content log of the virtual job according to a status of a storage area for the content log in another image processing apparatus included in the virtual device when an error has occurred in said another image processing apparatus, even if the determination unit does not determine that the particular image processing apparatus is to acquire the content log, and wherein the content log is historical information including attribute information of the virtual job and image data processed based on the virtual job or extracted data from the image data.