Hi Robert, There is no feature called "Multiple SGL in one NVMe capsule". The NVMe over Fabrics specification allows a controller to advertise how many SGL descriptors it supports using the MSDBD Identify field: "Maximum SGL Data Block Descriptors (MSDBD): This field indicates the maximum number of (Keyed) SGL Data Block descriptors that a host is allowed to place in a capsule. A value of 0h indicates no limit." Setting this value to 1 is perfectly valid. Similarly a host is free to chose any number of SGL descriptors between 0 (only for command that don't transfer data) to the limit imposed by the controller using the MSDBD field. There are no plans to support a MSDBD value larger than 1 in the Linux NVMe target, and there are no plans to ever submit commands with multiple SGLs from the host driver either. Cheers, Christoph -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
