12d5dc3baSKonrad Rzeszutek WilkWhat: /sys/module/xen_blkfront/parameters/max 22d5dc3baSKonrad Rzeszutek WilkDate: June 2013 32d5dc3baSKonrad Rzeszutek WilkKernelVersion: 3.11 42d5dc3baSKonrad Rzeszutek WilkContact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 52d5dc3baSKonrad Rzeszutek WilkDescription: 62d5dc3baSKonrad Rzeszutek Wilk Maximum number of segments that the frontend will negotiate 72d5dc3baSKonrad Rzeszutek Wilk with the backend for indirect descriptors. The default value 82d5dc3baSKonrad Rzeszutek Wilk is 32 - higher value means more potential throughput but more 92d5dc3baSKonrad Rzeszutek Wilk memory usage. The backend picks the minimum of the frontend 102d5dc3baSKonrad Rzeszutek Wilk and its default backend value. 11*74a85247SSeongJae Park 12*74a85247SSeongJae ParkWhat: /sys/module/xen_blkfront/parameters/feature_persistent 13*74a85247SSeongJae ParkDate: September 2020 14*74a85247SSeongJae ParkKernelVersion: 5.10 15*74a85247SSeongJae ParkContact: SeongJae Park <sjpark@amazon.de> 16*74a85247SSeongJae ParkDescription: 17*74a85247SSeongJae Park Whether to enable the persistent grants feature or not. Note 18*74a85247SSeongJae Park that this option only takes effect on newly created frontends. 19*74a85247SSeongJae Park The default is Y (enable). 20