Block layer SG support v4
modulename: bsg.ko
configname: CONFIG_BLK_DEV_BSG
Linux Kernel Configuration
└─>Enable the block layer
└─>Block layer SG support v4
In linux kernel since version 2.6.23 (release Date: 2007-10-09)
Saying Y here will enable generic SG (SCSI generic) v4 support
for any block device.
Unlike SG v3 (aka block/scsi_ioctl.c drivers/scsi/sg.c), SG v4
can handle complicated SCSI commands: tagged variable length cdbs
with bidirectional data transfers and generic request/response
protocols (e.g. Task Management Functions and SMP in Serial
Attached SCSI).
This option is required by recent UDEV versions to properly
access device serial numbers, etc.
If unsure, say Y.
for any block device.
Unlike SG v3 (aka block/scsi_ioctl.c drivers/scsi/sg.c), SG v4
can handle complicated SCSI commands: tagged variable length cdbs
with bidirectional data transfers and generic request/response
protocols (e.g. Task Management Functions and SMP in Serial
Attached SCSI).
This option is required by recent UDEV versions to properly
access device serial numbers, etc.
If unsure, say Y.