[ovirt-users] unable to put ovirt host in maintenance

Hello I'm trying to put one of my ovirt host ( whcih is also the ovirt-engine) into maintenance mode but i receive this error: Error while executing action: Cannot switch Host OvirtHome to Maintenance mode. Image transfer is in progress for the following (5) disks: b6338adf-a43b-4051-9bc0-7bb436876b5e, b8aa8ac8-e4bf-4a31-bd6f-02a33e04f8c6, f8548d7b-40c4-4d1e-9b21-8d4aa4966fff, 3626520b-ba03-452a-833f-4e4d48215047, 4b3242d0-73f6-46c5-99ac-9bac86b4ab41 Please wait for the operations to complete and try again I start does transfert from command line ans they failed, how can i delete the reference to those from the linux command line ? My ovirt version is the 4.3 (latest one) I'm running it on centos 7.6 with latest update Hope someone can help me ! Best regards stephane