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102 lines
3.1 KiB
Plaintext
102 lines
3.1 KiB
Plaintext
SCSI RDMA Protocol (SRP) Target driver for Linux
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=================================================
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Introduction
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------------
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The SRP target driver has been designed to work on top of the Linux
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InfiniBand kernel drivers. While all recent Linux distributions
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include recent versions of the InfiniBand drivers, the only way to
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obtain the latest available InfiniBand drivers is by installing the
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OFED software stack.
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The OFED stack is distributed by the OpenFabrics Alliance (OFA). The
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mission of the OpenFabrics Alliance is to is to develop, distribute
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and promote a unified, transport-independent, open-source software
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stack for RDMA-capable fabrics and networks, including InfiniBand and
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Ethernet.
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Note: because during OFED installation the distro-provided InfiniBand
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kernel drivers are replaced, doing so voids the support contract
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offered by your Linux distributor.
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Please follow the instructions below carefully. Skipping a step may
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result in kernel modules that fail to load, a kernel oops or even a
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system that does no longer boot.
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Verifying the kernel version
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----------------------------
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Before installing the OFED distribution, it is very important to check
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the OFED release notes. Each OFED distribution has been tested
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carefully, but only against the kernel versions specified in
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docs/OFED_release_notes.txt (you can find this document in the OFED
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distribution). Make sure that you are using a supported kernel / OFED
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combination. As an example, if you want to use OFED 1.5.1 on an Ubuntu
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system, you will have to start with replacing the Ubuntu kernel by a
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kernel from kernel.org since OFED 1.5.1 has not been tested on any
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Ubuntu kernel.
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Compiling SRP against OFED
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--------------------------
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Make sure that all necessary packages needed for kernel compilation
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have been installed (kernel headers, gcc, binutils, ...).
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Unload any loaded InfiniBand drivers:
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/etc/init.d/opensmd stop
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/etc/init.d/openibd stop
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Remove any distro-provided InfiniBand drivers:
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rm -rf /lib/modules/$(uname -r)/kernel/drivers/infiniband
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rm -rf /lib/modules/$(uname -r)/kernel/drivers/net/mlx4
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Next, download and install the OFED package. Make sure to disable
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OFED's SRP target driver (srpt=n) and to enable at least the
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kernel-ib, kernel-ib-devel and SRP tools packages. An example:
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wget http://www.openfabrics.org/downloads/OFED/ofed-1.5.1/OFED-1.5.1.tgz
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tar xzf OFED-1.5.1.tgz
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cd OFED-1.5.1
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cat <<EOF >ofed.conf
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libibverbs=y
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libibverbs-utils=y
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libmthca=y
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libmlx4=y
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libcxgb3=y
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libnes=y
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libipathverbs=y
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librdmacm=y
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librdmacm-utils=y
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mstflint=y
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ofed-docs=y
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ofed-scripts=y
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kernel-ib=y
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kernel-ib-devel=y
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ibvexdmtools=y
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qlgc_vnic_daemon=y
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core=y
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mthca=y
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mlx4=y
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mlx4_en=y
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cxgb3=y
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nes=y
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ipath=y
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ipoib=y
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opensm=y
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opensm-libs=y
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srpt=n
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srptools=y
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perftest=y
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EOF
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./install.pl -c ofed.conf
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Now continue with the installation instructions you can find in the
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SCST-SRPT README file. The Makefile included with SCST-SRPT detects
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whether OFED has been installed, and if so, compiles SCST-SRPT with
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the OFED kernel headers instead of with the regular kernel headers.
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