Greetings all, The princible functionality for SPC-3 compliant ALUA Logical Unit and Target Port groups is now up and running with Target_Core_Mod/ConfigFS and LIO-Target/ConfigFS. So far, you can create, change, associate ConfigFS objects and release ALUA Logical Unit and Target Port group abstractions through /sys/kernel/config/target/core/alua. Changing of alua_access_state via ConfigFS is not supported just yet, but the transition between Active/Optimized and Active/Non-Optimized should be easy enough. This patch is made against lio-core-2.6.git/master and tested on v2.6.29-rc2 x86 32-bit HVM. 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 Here is what it looks like in action so far: *) Target ConfigFS side: # Create a ALUA Logical Unit Group target:/sys/kernel/config/target/core# mkdir -p alua/lu_gps/lio_lun_group # Create two ALUA Target Port Groups target:/sys/kernel/config/target/core# mkdir -p alua/tg_pt_gps/lio_west_group target:/sys/kernel/config/target/core# mkdir -p alua/tg_pt_gps/lio_east_group target:/sys/kernel/config/target/core# tree alua/ alua/ |-- lu_gps | |-- default_lu_gp | | |-- alua_access_state | | |-- lu_gp_id | | `-- members | `-- lio_lun_group | |-- alua_access_state | |-- lu_gp_id | `-- members `-- tg_pt_gps |-- default_tg_pt_gp | |-- alua_access_state | |-- members | `-- tg_pt_gp_id |-- lio_east_group | |-- alua_access_state | |-- members | `-- tg_pt_gp_id `-- lio_west_group |-- alua_access_state |-- members `-- tg_pt_gp_id 7 directories, 15 files # Create an ALUA Logical Unit Group assocation for iblock_0/lvm_test0 to lio_lun_group target:/sys/kernel/config/target/core# echo lio_lun_group > iblock_0/lvm_test0/alua_lu_gp # Create an Target Port Group assocation for lio_west_group target:/sys/kernel/config/target/iscsi/$TARGETNAME/$TPGT/lun/lun_0# echo lio_west_group > alua_tg_pt_gp # Create an Target Port Group assocation for lio_east_group target:/sys/kernel/config/target/iscsi/$ANOTHER_TARGETNAME/$TPGT/lun/lun_0# echo lio_east_group > alua_tg_pt_gp *) From target side dmesg: Target_Core_ConfigFS: Allocated ALUA Logical Unit Group: core/alua/lu_gps/lio_lun_group, ID: 1 Target_Core_ConfigFS: Allocated ALUA Target Port Group: core/alua/tg_pt_gps/lio_west_group, ID: 1 Target_Core_ConfigFS: Allocated ALUA Target Port Group: core/alua/tg_pt_gps/lio_east_group, ID: 2 Target_Core_ConfigFS: Moving iblock_0/lvm_test0 to ALUA LU Group: core/alua/lu_gps/lio_lun_group, ID: 1 Target_Core_ConfigFS: Moving iqn.2003-01.org.linux-iscsi.target.i686:sn.cff3eedbd2fd/tpgt_1/lun_0 to ALUA Target Port Group: core/alua/tg_pt_gps/lio_east_group, ID: 2 Target_Core_ConfigFS: Moving iqn.2003-01.org.linux-iscsi.target.i686:sn.e475ed6fcdd0/tpgt_1/lun_0 to ALUA Target Port Group: core/alua/tg_pt_gps/lio_west_group, ID: 1 *) From the iSCSI Initiator side connected to LIO-Target v3.0 iSCSI Target Ports using sg3_utils: # First LIO-Target iSCSI Target port: initiator# sg_inq -v -l 16384 -p 0x83 /dev/sde VPD INQUIRY: Device Identification page inquiry cdb: 12 01 83 00 fc 00 Designation descriptor number 1, descriptor length: 58 id_type: T10 vendor identification, code_set: ASCII associated with the addressed logical unit vendor id: LIO-ORG vendor specific: IBLOCK:eEaqKo-gYF8-vnDA-jJhf-Xqzy-pjGF-G6Y50v Designation descriptor number 2, descriptor length: 8 transport: Internet SCSI (iSCSI) id_type: Relative target port, code_set: Binary associated with the target port Relative target port: 0x1 Designation descriptor number 3, descriptor length: 8 transport: Internet SCSI (iSCSI) id_type: Target port group, code_set: Binary associated with the target port Target port group: 0x1 Designation descriptor number 4, descriptor length: 8 id_type: Logical unit group, code_set: Binary associated with the addressed logical unit Logical unit group: 0x1 Designation descriptor number 5, descriptor length: 72 transport: Internet SCSI (iSCSI) id_type: SCSI name string, code_set: UTF-8 associated with the target port SCSI name string: iqn.2003-01.org.linux-iscsi.target.i686:sn.e475ed6fcdd0,t,0x0001 # Second LIO-Target iSCSI Target Port initiator# sg_inq -v -l 16384 -p 0x83 /dev/sdf VPD INQUIRY: Device Identification page inquiry cdb: 12 01 83 00 fc 00 Designation descriptor number 1, descriptor length: 58 id_type: T10 vendor identification, code_set: ASCII associated with the addressed logical unit vendor id: LIO-ORG vendor specific: IBLOCK:eEaqKo-gYF8-vnDA-jJhf-Xqzy-pjGF-G6Y50v Designation descriptor number 2, descriptor length: 8 transport: Internet SCSI (iSCSI) id_type: Relative target port, code_set: Binary associated with the target port Relative target port: 0x2 Designation descriptor number 3, descriptor length: 8 transport: Internet SCSI (iSCSI) id_type: Target port group, code_set: Binary associated with the target port Target port group: 0x2 Designation descriptor number 4, descriptor length: 8 id_type: Logical unit group, code_set: Binary associated with the addressed logical unit Logical unit group: 0x1 Designation descriptor number 5, descriptor length: 72 transport: Internet SCSI (iSCSI) id_type: SCSI name string, code_set: UTF-8 associated with the target port SCSI name string: iqn.2003-01.org.linux-iscsi.target.i686:sn.cff3eedbd2fd,t,0x0001 # REPORT_TARGET_PORT_GROUPS response data: initiator# sg_rtpg -v /dev/sde report target port groups cdb: a3 0a 00 00 00 00 00 00 04 00 00 00 Report list length = 36 Report target port groups: target port group id : 0x0 , Pref=0 target port group asymmetric access state : 0x00 T_SUP : 0, O_SUP : 0, U_SUP : 0, S_SUP : 0, AN_SUP : 1, AO_SUP : 1 status code : 0x02 vendor unique status : 0x00 target port count : 00 target port group id : 0x1 , Pref=0 target port group asymmetric access state : 0x00 T_SUP : 0, O_SUP : 0, U_SUP : 0, S_SUP : 0, AN_SUP : 1, AO_SUP : 1 status code : 0x02 vendor unique status : 0x00 target port count : 01 Relative target port ids: 0x01 target port group id : 0x2 , Pref=0 target port group asymmetric access state : 0x00 T_SUP : 0, O_SUP : 0, U_SUP : 0, S_SUP : 0, AN_SUP : 1, AO_SUP : 1 status code : 0x02 vendor unique status : 0x00 target port count : 01 Relative target port ids: 0x02 Comments folks..? --nab [PATCH 1/6] [Target_Core_Mod/ALUA]: Add support for SPC-3 Target Port and Logical Unit Groups [PATCH 2/6] [Target_Core_Mod/ALUA]: Add setup for target_core_device.c code [PATCH 3/6] [Target_Core_Mod]: Update FILEIO and RAMDISK subsystem plugins to SPC-3 revision identifer [PATCH 4/6] [Target_Core_Mod/ALUA]: Add ALUA struct kmem_caches and update EVPD 0x83 information [PATCH 5/6] [Target_Core_Mod/ConfigFS]: Add ALUA infrastructure [PATCH 6/6] [LIO-Target/ConfigFS]: Add ALUA wrapper functions to Target_Core_Mod/ALUA code >From /pub/scm/linux/kernel/git/nab/lio-core-2.6 * branch master -> FETCH_HEAD Updating 3466517..07c4589 Fast forward drivers/lio-core/iscsi_target_configfs.c | 42 +-- drivers/lio-core/target_core_alua.c | 496 +++++++++++++++++++++++---- drivers/lio-core/target_core_alua.h | 14 + drivers/lio-core/target_core_base.h | 42 +++ drivers/lio-core/target_core_configfs.c | 564 +++++++++++++++++++++++++++++- drivers/lio-core/target_core_device.c | 16 + drivers/lio-core/target_core_file.c | 2 +- drivers/lio-core/target_core_rd.c | 2 +- drivers/lio-core/target_core_transport.c | 56 +++- 9 files changed, 1113 insertions(+), 121 deletions(-) -- 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
