I've got an iSCSI volume. Replication flag is cleared. There's no iSCSI connection. There's no replication task with that volume. There's no snapshot and no backup.
Sorry, I didn't see the iSCSI target where this volume was part of.
(The GUI isn't really good to use. To many subframes, information is spread over all menues :-(
But you did get an answer in few min. Anyway maybe we should add a popup that once you move the mouse over the grayed X there should be a note stating to check the following if your intentions are to remove the LV.