[PATCH 0/4] [Target_Core_Mod]: Add SPC-3 reserverationsinfrastructure

[Nicholas A. Bellinger]

Greetings all,

This series of patches adds SCSI reservation infrastructure to
Target_Core_Mod/ConfigFS for current legacy SPC-2 reservations, as well
as WIP code for adding SPC-3 compliant persistent reservations to
Target_Core_Mod.

This patch is made against lio-core-2.6.git/master
and tested on v2.6.28.  The lio-core-2.6.git tree can be found at:

http://git.kernel.org/?p=linux/kernel/git/nab/lio-core-2.6.git;a=summary

Comments apperciated.

--nab

Subject: [PATCH 1/4] [Linux/SCSI] Add support for SPC-4 CDBs referenced in Persisent Reservations Allowed/Confict Table
Subject: [PATCH 2/4] [Target_Core_Mod]: Update core code for new reservations infrastructure
Subject: [PATCH 3/4] [Target_Core_Mod] Add generic >= SPC-3 and legacy SPC-2 infrastructure
Subject: [PATCH 4/4] [Target_Core_Mod/ConfigFS] Add target/core/$HBA/$STORAGE_OBJECT/pr for T10 reservations

 drivers/lio-core/Makefile                |    1 -
 drivers/lio-core/target_core_base.h      |   36 +--
 drivers/lio-core/target_core_configfs.c  |  137 +---------
 drivers/lio-core/target_core_device.c    |    1 -
 drivers/lio-core/target_core_pr.c        |  427 ------------------------------
 drivers/lio-core/target_core_pr.h        |   25 --
 drivers/lio-core/target_core_tpg.c       |    4 +
 drivers/lio-core/target_core_transport.c |  315 ++++++++++++----------
 drivers/lio-core/target_core_transport.h |    4 +-
 include/scsi/scsi.h                      |   22 --
 10 files changed, 186 insertions(+), 786 deletions(-)

On target_core_mod module load and /sys/kernel/config/target/core configuration with
Target_Core_Mod/IBLOCK, Target_Core_Mod/pSCSI, and Target_Core_Mod/RAMDISK_MCP $STORAGE_OBJECTS:

TARGET_CORE[0]: Loading Generic Kernel Storage Engine: v3.0.0 on Linux/i686 on 2.6.28
TARGET_CORE[0]: Initialized ConfigFS Fabric Infrastructure: v1.0.0 on Linux/i686 on 2.6.28
SE_PC[1] - Registered Plugin Class: TRANSPORT
PLUGIN_TRANSPORT[1] - pscsi registered
PLUGIN_TRANSPORT[4] - iblock registered
PLUGIN_TRANSPORT[5] - rd_dr registered
PLUGIN_TRANSPORT[6] - rd_mcp registered
PLUGIN_TRANSPORT[7] - fileio registered
SE_PC[2] - Registered Plugin Class: OBJ
PLUGIN_OBJ[1] - dev registered
Target_Core_ConfigFS: Located se_plugin: cfa41090 plugin_name: iblock hba_type: 4 plugin_dep_id: 0
CORE_HBA[0] - Linux-iSCSI.org iBlock HBA Driver v3.0 on Generic Target Core Stack v3.0.0
CORE_HBA[0] - Attached iBlock HBA: 0 to Generic Target Core TCQ Depth: 512
CORE_HBA[0] - Attached HBA to Generic Target Core
IBLOCK: Allocated ib_dev for lvm_test0
Target_Core_ConfigFS: Allocated se_subsystem_dev_t: cfa40000 se_dev_su_ptr: c8c74400
IBLOCK: Claiming struct block_device: cf63cf00
IBLOCK: Created bio_set() for major/minor: 254:2
iblock: Using SPC2_RESERVATIONS emulation
CORE_iBLOCK[0] - Activating Device with TCQ: 0 at Major: 254 Minor 2
  Vendor: LIO-ORG   Model: IBLOCK            Revision: v3.0
  Type:   Direct-Access                      ANSI SCSI revision: 02
T10 EVPD Unit Serial Number: 1234567890:0_254_2
T10 EVPD Page Length: 37
T10 EVPD Identifer Length: 33
T10 EVPD Identifier Association: addressed logical unit
T10 EVPD Identifier Type: T10 Vendor ID based
T10 EVPD ASCII Device Identifier: LIO-ORG IBLOCK:1234567890:0_254_2
Target_Core_ConfigFS: Registered iblock se_dev->se_dev_ptr: c7f95800 from fd
Target_Core_ConfigFS: Located se_plugin: cfa41024 plugin_name: pscsi hba_type: 1 plugin_dep_id: 0
CORE_HBA[1] - Linux-iSCSI.org Parallel SCSI HBA Driver v3.0 on Generic Target Core Stack v3.0.0
CORE_HBA[1] - MPT SPI Host
CORE_HBA[1] - Attached Parallel SCSI HBA to Generic Target Core with TCQ Depth: 127 MaxSectors: 8192
CORE_HBA[1] - Attached HBA to Generic Target Core
PSCSI: Allocated pdv: cd047160 for sdd
Target_Core_ConfigFS: Allocated se_subsystem_dev_t: cfa43800 se_dev_su_ptr: cd047160
PSCSI: Claiming cf2d8000 Major:Minor - 8:48
pscsi: Using SPC_PASSTHROUGH, no reservation emulation
CORE_PSCSI[0] - Activating Device with TCQ: 32 at Parallel SCSI Location (Channel/Target/LUN) 0/3/0
  Vendor: VMware,   Model: VMware Virtual S  Revision: 1.0 
  Type:   Direct-Access                      ANSI SCSI revision: 02
PSCSI Status Byte exception at task: ca63d000 CDB: 0x12 Result: 0x08000002
CORE_PSCSI[0] - Added TYPE_DISK for 0:3:0
Target_Core_ConfigFS: Registered pscsi se_dev->se_dev_ptr: c8f92000 from fd
Target_Core_ConfigFS: Located se_plugin: cfa410d8 plugin_name: rd_mcp hba_type: 6 plugin_dep_id: 0
CORE_HBA[2] - Linux-iSCSI.org Ramdisk HBA Driver v3.0 on Generic Target Core Stack v3.0.0
CORE_HBA[2] - Attached Ramdisk HBA: 0 to Generic Target Core TCQ Depth: 256 MaxSectors: 1024
CORE_HBA[2] - Attached HBA to Generic Target Core
Target_Core_ConfigFS: Allocated se_subsystem_dev_t: c85bf800 se_dev_su_ptr: c8fe5880
RAMDISK: Referencing Page Count: 16384
CORE_RD[0] - Built Ramdisk Device ID: 0 space of 16384 pages in 6 tables
rd_mcp: Using SPC2_RESERVATIONS emulation
CORE_RD[0] - Activating Device with TCQ: 0 at Ramdisk Device ID: 0
  Vendor: LIO-ORG   Model: RAMDISK-MCP       Revision: v3.0
  Type:   Direct-Access                      ANSI SCSI revision: 02
T10 EVPD Unit Serial Number: 1234567890:2_0
T10 EVPD Page Length: 38
T10 EVPD Identifer Length: 34
T10 EVPD Identifier Association: addressed logical unit
T10 EVPD Identifier Type: T10 Vendor ID based
T10 EVPD ASCII Device Identifier: LIO-ORG RAMDISK-MCP:1234567890:2_0
CORE_RD[0] - Added LIO MEMCPY Ramdisk Device ID: 0 of 16384 pages in 6 tables, 67108864 total bytes
Target_Core_ConfigFS: Registered se_dev->se_dev_ptr: c8f93400

<SNIP>


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