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Diffstat (limited to 'Documentation/target/tcm_mod_builder.txt')
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1 files changed, 0 insertions, 145 deletions
diff --git a/Documentation/target/tcm_mod_builder.txt b/Documentation/target/tcm_mod_builder.txt deleted file mode 100644 index ae22f7005540..000000000000 --- a/Documentation/target/tcm_mod_builder.txt +++ /dev/null @@ -1,145 +0,0 @@ ->>>>>>>>>> The TCM v4 fabric module script generator <<<<<<<<<< - -Greetings all, - -This document is intended to be a mini-HOWTO for using the tcm_mod_builder.py -script to generate a brand new functional TCM v4 fabric .ko module of your very own, -that once built can be immediately be loaded to start access the new TCM/ConfigFS -fabric skeleton, by simply using: - - modprobe $TCM_NEW_MOD - mkdir -p /sys/kernel/config/target/$TCM_NEW_MOD - -This script will create a new drivers/target/$TCM_NEW_MOD/, and will do the following - - *) Generate new API callers for drivers/target/target_core_fabric_configs.c logic - ->make_tpg(), ->drop_tpg(), ->make_wwn(), ->drop_wwn(). These are created - into $TCM_NEW_MOD/$TCM_NEW_MOD_configfs.c - *) Generate basic infrastructure for loading/unloading LKMs and TCM/ConfigFS fabric module - using a skeleton struct target_core_fabric_ops API template. - *) Based on user defined T10 Proto_Ident for the new fabric module being built, - the TransportID / Initiator and Target WWPN related handlers for - SPC-3 persistent reservation are automatically generated in $TCM_NEW_MOD/$TCM_NEW_MOD_fabric.c - using drivers/target/target_core_fabric_lib.c logic. - *) NOP API calls for all other Data I/O path and fabric dependent attribute logic - in $TCM_NEW_MOD/$TCM_NEW_MOD_fabric.c - -tcm_mod_builder.py depends upon the mandatory '-p $PROTO_IDENT' and '-m -$FABRIC_MOD_name' parameters, and actually running the script looks like: - -target:/mnt/sdb/lio-core-2.6.git/Documentation/target# python tcm_mod_builder.py -p iSCSI -m tcm_nab5000 -tcm_dir: /mnt/sdb/lio-core-2.6.git/Documentation/target/../../ -Set fabric_mod_name: tcm_nab5000 -Set fabric_mod_dir: -/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000 -Using proto_ident: iSCSI -Creating fabric_mod_dir: -/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000 -Writing file: -/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/tcm_nab5000_base.h -Using tcm_mod_scan_fabric_ops: -/mnt/sdb/lio-core-2.6.git/Documentation/target/../../include/target/target_core_fabric_ops.h -Writing file: -/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/tcm_nab5000_fabric.c -Writing file: -/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/tcm_nab5000_fabric.h -Writing file: -/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/tcm_nab5000_configfs.c -Writing file: -/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/Kbuild -Writing file: -/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/Kconfig -Would you like to add tcm_nab5000to drivers/target/Kbuild..? [yes,no]: yes -Would you like to add tcm_nab5000to drivers/target/Kconfig..? [yes,no]: yes - -At the end of tcm_mod_builder.py. the script will ask to add the following -line to drivers/target/Kbuild: - - obj-$(CONFIG_TCM_NAB5000) += tcm_nab5000/ - -and the same for drivers/target/Kconfig: - - source "drivers/target/tcm_nab5000/Kconfig" - -*) Run 'make menuconfig' and select the new CONFIG_TCM_NAB5000 item: - - <M> TCM_NAB5000 fabric module - -*) Build using 'make modules', once completed you will have: - -target:/mnt/sdb/lio-core-2.6.git# ls -la drivers/target/tcm_nab5000/ -total 1348 -drwxr-xr-x 2 root root 4096 2010-10-05 03:23 . -drwxr-xr-x 9 root root 4096 2010-10-05 03:22 .. --rw-r--r-- 1 root root 282 2010-10-05 03:22 Kbuild --rw-r--r-- 1 root root 171 2010-10-05 03:22 Kconfig --rw-r--r-- 1 root root 49 2010-10-05 03:23 modules.order --rw-r--r-- 1 root root 738 2010-10-05 03:22 tcm_nab5000_base.h --rw-r--r-- 1 root root 9096 2010-10-05 03:22 tcm_nab5000_configfs.c --rw-r--r-- 1 root root 191200 2010-10-05 03:23 tcm_nab5000_configfs.o --rw-r--r-- 1 root root 40504 2010-10-05 03:23 .tcm_nab5000_configfs.o.cmd --rw-r--r-- 1 root root 5414 2010-10-05 03:22 tcm_nab5000_fabric.c --rw-r--r-- 1 root root 2016 2010-10-05 03:22 tcm_nab5000_fabric.h --rw-r--r-- 1 root root 190932 2010-10-05 03:23 tcm_nab5000_fabric.o --rw-r--r-- 1 root root 40713 2010-10-05 03:23 .tcm_nab5000_fabric.o.cmd --rw-r--r-- 1 root root 401861 2010-10-05 03:23 tcm_nab5000.ko --rw-r--r-- 1 root root 265 2010-10-05 03:23 .tcm_nab5000.ko.cmd --rw-r--r-- 1 root root 459 2010-10-05 03:23 tcm_nab5000.mod.c --rw-r--r-- 1 root root 23896 2010-10-05 03:23 tcm_nab5000.mod.o --rw-r--r-- 1 root root 22655 2010-10-05 03:23 .tcm_nab5000.mod.o.cmd --rw-r--r-- 1 root root 379022 2010-10-05 03:23 tcm_nab5000.o --rw-r--r-- 1 root root 211 2010-10-05 03:23 .tcm_nab5000.o.cmd - -*) Load the new module, create a lun_0 configfs group, and add new TCM Core - IBLOCK backstore symlink to port: - -target:/mnt/sdb/lio-core-2.6.git# insmod drivers/target/tcm_nab5000.ko -target:/mnt/sdb/lio-core-2.6.git# mkdir -p /sys/kernel/config/target/nab5000/iqn.foo/tpgt_1/lun/lun_0 -target:/mnt/sdb/lio-core-2.6.git# cd /sys/kernel/config/target/nab5000/iqn.foo/tpgt_1/lun/lun_0/ -target:/sys/kernel/config/target/nab5000/iqn.foo/tpgt_1/lun/lun_0# ln -s /sys/kernel/config/target/core/iblock_0/lvm_test0 nab5000_port - -target:/sys/kernel/config/target/nab5000/iqn.foo/tpgt_1/lun/lun_0# cd - -target:/mnt/sdb/lio-core-2.6.git# tree /sys/kernel/config/target/nab5000/ -/sys/kernel/config/target/nab5000/ -|-- discovery_auth -|-- iqn.foo -| `-- tpgt_1 -| |-- acls -| |-- attrib -| |-- lun -| | `-- lun_0 -| | |-- alua_tg_pt_gp -| | |-- alua_tg_pt_offline -| | |-- alua_tg_pt_status -| | |-- alua_tg_pt_write_md -| | `-- nab5000_port -> ../../../../../../target/core/iblock_0/lvm_test0 -| |-- np -| `-- param -`-- version - -target:/mnt/sdb/lio-core-2.6.git# lsmod -Module Size Used by -tcm_nab5000 3935 4 -iscsi_target_mod 193211 0 -target_core_stgt 8090 0 -target_core_pscsi 11122 1 -target_core_file 9172 2 -target_core_iblock 9280 1 -target_core_mod 228575 31 -tcm_nab5000,iscsi_target_mod,target_core_stgt,target_core_pscsi,target_core_file,target_core_iblock -libfc 73681 0 -scsi_debug 56265 0 -scsi_tgt 8666 1 target_core_stgt -configfs 20644 2 target_core_mod - ----------------------------------------------------------------------- - -Future TODO items: - - *) Add more T10 proto_idents - *) Make tcm_mod_dump_fabric_ops() smarter and generate function pointer - defs directly from include/target/target_core_fabric_ops.h:struct target_core_fabric_ops - structure members. - -October 5th, 2010 -Nicholas A. Bellinger <nab@linux-iscsi.org> |