From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Greetings SCSI folks,
This is a set of patches to lio-core-2.6.git/master to add proper support for strict
iSCSI TransportID ISID processing within core TCM/PR fabric independent logic.
This allows TCM to properly handle the scenario for SPC-3 PR and legacy SPC-2 reservations
where there is a single iSCSI InitiatorName with multiple ISIDs (TransportIDs with the same
InitiatorName) connecting to a single TCM/LIO target endpoint (TargetName+TargetPortalGroupTag)
Beyond this one case, this patch also does change the default operation of TCM/PR for all
scenarios to require the use of InitiatorName+ISID TransportIDs for PR opreation for fabrics
(like iSCSI) having 'multi-value' TransportIDs containing an ISID.
There is also a patch to add a device attribute 'enforce_pr_isids' to allow matching for
PR registration created via TransportID with SPEC_I_PT=1 or REGISTER_AND_MOVE not containing
a ISID, but for fabric destination employing them (iSCSI again). Note that the changes have
been tested using iSCSI and Virtual SAS ports with REGISTER + SPEC_I_PT=1, APTPL=1 and
REGISTER_AND_MOVE between LIO-Target and TCM_Loop fabric modules.
It would be great if any folks fimilar discussion would mind to have a look at the code!
Best,
Signed-off-by: Nicholas A. Bellinger <nab@xxxxxxxxxxxxxxx>
Nicholas Bellinger (4):
[TCM/PR]: Add proper support for ISIDs in TransportID processing
[TCM/PR]: Replace usage of DEF_PR_REGISTERED with
*core_scsi3_locate_pr_reg()
[TCM/PR]: Update APTPL metadata logic for ISIDs in TransportID
processing
[TCM/ConfigFS]: Add per-device attribute 'enforce_pr_isids'
drivers/target/target_core_configfs.c | 44 +++-
drivers/target/target_core_device.c | 12 +
drivers/target/target_core_pr.c | 393 ++++++++++++++++++++++++--------
include/target/target_core_base.h | 4 +
include/target/target_core_device.h | 1 +
include/target/target_core_pr.h | 6 +-
include/target/target_core_transport.h | 3 +
7 files changed, 356 insertions(+), 107 deletions(-)
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