1What: /sys/module/xen_blkfront/parameters/max_indirect_segments 2Date: June 2013 3KernelVersion: 3.11 4Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 5Description: 6 Maximum number of segments that the frontend will negotiate 7 with the backend for indirect descriptors. The default value 8 is 32 - higher value means more potential throughput but more 9 memory usage. The backend picks the minimum of the frontend 10 and its default backend value. 11 12What: /sys/module/xen_blkfront/parameters/feature_persistent 13Date: September 2020 14KernelVersion: 5.10 15Contact: SeongJae Park <sj@kernel.org> 16Description: 17 Whether to enable the persistent grants feature or not. Note 18 that this option only takes effect on newly created frontends. 19 The default is Y (enable). 20