From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> Greetings Linux/SCSI folks, This patch series to lio-core-2.6.git/master adds support for TCM v3.x >= Persistent Reservation SPEC_I_PT=1 TransportID processing and REGISTER_AND_MOVE logic to safely function in intra-fabric mode across all available TCM fabric modules using a new set of demo-mode safe configfs dependency wrappers. This means that the exhaustive (all SPC-4 defined feature bits) Persistent Reservation support in TCM v3.x at: http://git.kernel.org/?p=linux/kernel/git/nab/lio-core-2.6.git;a=blob;f=drivers/target/target_core_pr.c;hb=HEAD is now functioning not only in multi-fabric mode (processing PR ops across multiple fabric modules), but also in intra-fabric mode (a single PR op spanning multiple fabrics) for the SPEC_I_PT=1 TransportID processing and REGISTER_AND_MOVE op cases in both explict ACL and demo-mode operation.. This patch has been tested using LIO-Target iSCSI Target Ports, TCM_Loop Virtual SAS Target Ports, and tcm_fc OpenFCoE.org Target Ports from new code in lio-core-2.6.git/tcm_fc. Below is the example usage of intra-fabric PR ops with APTPL=1 using SCSI ports from these three independent (3) fabric modules. Comments..? --nab Nicholas Bellinger (3): [TCM/PR]: Add TPG, NodeACL and MappedLUN wrappers for configfs_[un]depend_item() [TCM/PR]: Convert REGISTER_AND_MOVE use new configfs dependency wrappers [TCM/PR]: Add support for intra-fabric SPEC_I_PT=1 TransportID processing drivers/target/target_core_pr.c | 360 ++++++++++++++++++++++++++++----------- 1 files changed, 260 insertions(+), 100 deletions(-) *) Create PR registrations for iSCSI (iqn.1993-08.org.debian:01:2dadf92d0ef) and Virtual SAS (naa.60014051e4328f54) fabric from iSCSI port using SPEC_I_PT=1 and APTPL=0 sg_persist -vvv --out --device /dev/sde --register --param-rk=0 --param-sark=0x1234ffff -T 5 -X 06,00,00,00,6E,61,61,2E,36,30,30,31,34,30,35,31,65,34,33,32,38,66,35,34,00 number of tranport-ids decoded from command line (or stdin): 1 Decode given transport-ids: Transport Id of initiator: SAS address: 0x6e61612e36303031 open /dev/sde with flags=0x800 inquiry cdb: 12 00 00 00 24 00 duration=0 ms LIO-ORG IBLOCK 3.1 Peripheral device type: disk open /dev/sde with flags=0x802 Persistent Reservation Out cmd: 5f 00 05 00 00 00 00 00 34 00 Persistent Reservation Out parameters: 00 00 00 00 00 00 00 00 00 00 00 00 00 12 34 ff ff .............4.. 10 00 00 00 00 08 00 00 00 00 00 00 18 06 00 00 00 ................ 20 6e 61 61 2e 36 30 30 31 34 30 35 31 65 34 33 32 naa.60014051e432 30 38 66 35 34 8f54 duration=8 ms PR out: command (Register) successful *) Create PR Write Exclusive Registrants Only Reservation from Virtual SAS Port (naa.60014051e4328f54) sg_persist -vvv --out --reserve -d /dev/sdg --param-rk=0x1234ffff -T 5 open /dev/sdg with flags=0x800 inquiry cdb: 12 00 00 00 24 00 duration=0 ms LIO-ORG IBLOCK 3.1 Peripheral device type: disk open /dev/sdg with flags=0x802 Persistent Reservation Out cmd: 5f 01 05 00 00 00 00 00 18 00 Persistent Reservation Out parameters: 00 00 00 00 00 12 34 ff ff 00 00 00 00 00 00 00 00 .....4.......... 10 00 00 00 00 00 00 00 00 ........ duration=0 ms PR out: command (Reserve) successful *) Call REGISTER_AND_MOVE with APTPL=1 to transfer PR reservation from Virtual SAS Port (naa.60014051e4328f54) to a new registration on the FCoE Target port (20:00:50:41:4c:4f:3b:00) sg_persist -vvv --out --register-move --relative-target-port 3 -Z -d /dev/sdg --param-rk=0x1234ffff --param-sark=0xabcdffff -X 00,00,00,00,00,00,00,00,32,30,3A,30,30,3A,35,30,3A,34,31,3A,34,63,3A,34,66,3A,33,62,3A,30,30,00 number of tranport-ids decoded from command line (or stdin): 1 Decode given transport-ids: Transport Id of initiator: FCP-2 World Wide Name: 00 32 30 3a 30 30 3a 35 30 20:00:50 Transport Id of initiator: SAS address: 0x3a30300000000000 [Unexpected format code: 1] open /dev/sdg with flags=0x800 inquiry cdb: 12 00 00 00 24 00 duration=0 ms LIO-ORG IBLOCK 3.1 Peripheral device type: disk open /dev/sdg with flags=0x802 Persistent Reservation Out cmd: 5f 07 08 00 00 00 00 00 38 00 Persistent Reservation Out parameters: 00 00 00 00 00 12 34 ff ff 00 00 00 00 ab cd ff ff .....4.......... 10 00 01 00 03 00 00 00 20 00 00 00 00 00 00 00 00 ....... ........ 20 32 30 3a 30 30 3a 35 30 3a 34 31 3a 34 63 3a 34 20:00:50:41:4c:4 30 66 3a 33 62 3a 30 30 00 f:3b:00. duration=8 ms PR out: 'register and move' command successful *) Display PERSISTENT_RESERVE_IN READ_FULL_STATUS sg_persist --in -s -d /dev/sdg LIO-ORG IBLOCK 3.1 Peripheral device type: disk PR generation=0x3 Key=0x1234ffff All target ports bit clear Relative port address: 0x2 not reservation holder Transport Id of initiator: iSCSI world wide unique port id: iqn.1993-08.org.debian:01:2dadf92d0ef Key=0x1234ffff All target ports bit clear Relative port address: 0x4 not reservation holder Transport Id of initiator: SAS address: 0x60014051e4328f54 Key=0xabcdffff All target ports bit clear Relative port address: 0x3 << Reservation holder >> scope: LU_SCOPE, type: Write Exclusive, registrants only Transport Id of initiator: FCP-2 World Wide Name: 00 20 00 50 41 4c 4f 3b 00 .PALO;. *) kernel ring buffer output, note that virtual SAS ports appear as 'loopback' SPC-3 PR SPEC_I_PT: Located loopback Node: naa.60014051e4328f54 Port RTPI: 4 SPC-3 PR [iSCSI] Service Action: REGISTER Initiator Node: iqn.1993-08.org.debian:01:2dadf92d0ef SPC-3 PR [iSCSI] for SINGLE TCM Subsystem iblock Object Target Port(s) SPC-3 PR [iSCSI] SA Res Key: 0x000000001234ffff PRgeneration: 0x00000000 APTPL: 0 SPC-3 PR [iSCSI] SPEC_I_PT: Successfully registered Transport ID for Node: iqn.1993-08.org.debian:01:2dadf92d0ef Mapped LUN: 0 SPC-3 PR [loopback] Service Action: REGISTER Initiator Node: naa.60014051e4328f54 SPC-3 PR [loopback] for SINGLE TCM Subsystem iblock Object Target Port(s) SPC-3 PR [loopback] SA Res Key: 0x000000001234ffff PRgeneration: 0x00000001 APTPL: 0 SPC-3 PR [loopback] SPEC_I_PT: Successfully registered Transport ID for Node: naa.60014051e4328f54 Mapped LUN: 0 SPC-3 PR: Set APTPL Bit Deactivated for REGISTER SPC-3 PR [loopback] Service Action: RESERVE created new reservation holder TYPE: Write Exclusive Access, Registrants Only ALL_TG_PT: 0 SPC-3 PR [loopback] RESERVE Node: naa.60014051e4328f54 SPC-3 PR [fc] Extracted initiator device identifier: 20:00:50:41:4c:4f:3b:00 SPC-3 PR [fc] Service Action: REGISTER_AND_MOVE Initiator Node: 20:00:50:41:4c:4f:3b:00 SPC-3 PR [fc] for SINGLE TCM Subsystem iblock Object Target Port(s) SPC-3 PR [fc] SA Res Key: 0x00000000abcdffff PRgeneration: 0x00000002 APTPL: 1 SPC-3 PR [loopback] Service Action: implict RELEASE cleared reservation holder TYPE: Write Exclusive Access, Registrants Only ALL_TG_PT: 0 SPC-3 PR [loopback] RELEASE Node: naa.60014051e4328f54 SPC-3 PR [fc] Service Action: REGISTER_AND_MOVE created new reservation holder TYPE: Write Exclusive Access, Registrants Only on object RTPI: 3 PRGeneration: 0x00000002 SPC-3 PR Successfully moved reservation from loopback Fabric Node: naa.60014051e4328f54 -> fc Fabric Node: 20:00:50:41:4c:4f:3b:00 SPC-3 PR: Set APTPL Bit Activated for REGISTER_AND_MOVE *) lsmod output lsmod Module Size Used by tcm_loop 12593 5 tcm_fc 21107 6 libfc 71025 1 tcm_fc iscsi_target_mod 201832 54 target_core_mod 233736 92 tcm_loop,tcm_fc,iscsi_target_mod scsi_tgt 8646 1 target_core_mod configfs 20592 5 tcm_loop,tcm_fc,iscsi_target_mod,target_core_mod -- 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
