I'm having the same issue. I have 2 fresh drives, added them to drivepool, then started copying files to the new Drivepool drive. Server crashed mid-way, don't understand if because of drivepool or not, then I launched drivepool again and left it on overnight, when I woke up it said starting service (7 hours), and it got in eventually. Now I stopped the service and re-started it, it shows me 12 minutes into waiting. I followed Q2299585B, but still no luck, might need to re-install it.