> > This patch adds the kernel module ib_srpt, which is a SCSI RDMA Protocol (SRP) > target implementation. This driver uses the InfiniBand stack and the SCST core. > > It is a high performance driver capable of handling 600K+ 4K random write > IOPS by a single target as well as 2.5+ GB/s sequential throughput over > a single QDR IB port. > > This driver was originally developed by Vu Pham (Mellanox) and has been > optimized by Bart Van Assche. > > Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx> > Signed-off-by: Vladislav Bolkhovitin <vst@xxxxxxxx> > Cc: Vu Pham <vu@xxxxxxxxxxxx> > Cc: Roland Dreier <rdreier@xxxxxxxxx> > Cc: David Dillow <dillowda@xxxxxxxx> > --- > Documentation/scst/README.srpt | 112 ++ > drivers/scst/Kconfig | 1 + > drivers/scst/Makefile | 2 +- > drivers/scst/srpt/Kconfig | 12 + > drivers/scst/srpt/Makefile | 1 + > drivers/scst/srpt/ib_dm_mad.h | 139 ++ > drivers/scst/srpt/ib_srpt.c | 3613 > ++++++++++++++++++++++++++++++++++++++++ > drivers/scst/srpt/ib_srpt.h | 352 ++++ > 8 files changed, 4231 insertions(+), 1 deletions(-) > create mode 100644 Documentation/scst/README.srpt > create mode 100644 drivers/scst/srpt/Kconfig > create mode 100644 drivers/scst/srpt/Makefile > create mode 100644 drivers/scst/srpt/ib_dm_mad.h > create mode 100644 drivers/scst/srpt/ib_srpt.c > create mode 100644 drivers/scst/srpt/ib_srpt.h > > diff --git a/Documentation/scst/README.srpt > b/Documentation/scst/README.srpt > new file mode 100644 > index 0000000..6f8b3ca > --- /dev/null > +++ b/Documentation/scst/README.srpt > @@ -0,0 +1,112 @@ > +SCSI RDMA Protocol (SRP) Target driver for Linux > +================================================= > + > +The SRP Target driver is designed to work directly on top of the > +OpenFabrics OFED-1.x software stack (http://www.openfabrics.org) or > +the Infiniband drivers in the Linux kernel tree > +(http://www.kernel.org). The SRP target driver also interfaces with > +the generic SCSI target mid-level driver called SCST > +(http://scst.sourceforge.net). > + > +How-to run > +----------- > + > +A. On srp target machine > +1. Please refer to SCST's README for loading scst driver and its > +dev_handlers drivers (scst_disk, scst_vdisk block or file IO mode, > nullio, ...) > + > +Example 1: working with real back-end scsi disks > +a. modprobe scst > +b. modprobe scst_disk > +c. cat /proc/scsi_tgt/scsi_tgt > + > +ibstor00:~ # cat /proc/scsi_tgt/scsi_tgt > +Device (host:ch:id:lun or name) Device handler > +0:0:0:0 dev_disk > +4:0:0:0 dev_disk > +5:0:0:0 dev_disk > +6:0:0:0 dev_disk > +7:0:0:0 dev_disk > + > +Now you want to exclude the first scsi disk and expose the last 4 scsi disks > as > +IB/SRP luns for I/O > +echo "add 4:0:0:0 0" >/proc/scsi_tgt/groups/Default/devices > +echo "add 5:0:0:0 1" >/proc/scsi_tgt/groups/Default/devices > +echo "add 6:0:0:0 2" >/proc/scsi_tgt/groups/Default/devices > +echo "add 7:0:0:0 3" >/proc/scsi_tgt/groups/Default/devices > + > +Example 2: working with VDISK FILEIO mode (using md0 device and file 10G-file) > +a. modprobe scst > +b. modprobe scst_vdisk > +c. echo "open vdisk0 /dev/md0" > /proc/scsi_tgt/vdisk/vdisk > +d. echo "open vdisk1 /10G-file" > /proc/scsi_tgt/vdisk/vdisk > +e. echo "add vdisk0 0" >/proc/scsi_tgt/groups/Default/devices > +f. echo "add vdisk1 1" >/proc/scsi_tgt/groups/Default/devices > + > +Example 3: working with VDISK BLOCKIO mode (using md0 device, sda, and > cciss/c1d0) > +a. modprobe scst > +b. modprobe scst_vdisk > +c. echo "open vdisk0 /dev/md0 BLOCKIO" > /proc/scsi_tgt/vdisk/vdisk > +d. echo "open vdisk1 /dev/sda BLOCKIO" > /proc/scsi_tgt/vdisk/vdisk > +e. echo "open vdisk2 /dev/cciss/c1d0 BLOCKIO" > /proc/scsi_tgt/vdisk/vdisk > +f. echo "add vdisk0 0" >/proc/scsi_tgt/groups/Default/devices > +g. echo "add vdisk1 1" >/proc/scsi_tgt/groups/Default/devices > +h. echo "add vdisk2 2" >/proc/scsi_tgt/groups/Default/devices > + [Jack] This README looks should update to new sysfs interface too. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
