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| author | David Disseldorp <ddiss@suse.de> | 2018-11-07 14:11:07 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-11-22 04:10:36 +0100 |
| commit | b49d6f7885306ee636d5c1af52170f3069ccf5f7 (patch) | |
| tree | 9422920bbe4153c54af39da2e5a0c34c2413677c /drivers/scsi/libfc/fc_rport.c | |
| parent | scsi: cxgb4i: fix thermal configuration dependencies (diff) | |
| download | linux-b49d6f7885306ee636d5c1af52170f3069ccf5f7.tar.xz linux-b49d6f7885306ee636d5c1af52170f3069ccf5f7.zip | |
scsi: target: add emulate_pr backstore attr to toggle PR support
The new emulate_pr backstore attribute allows for Persistent Reservation
and SCSI2 RESERVE/RELEASE support to be completely disabled. This can be
useful for scenarios such as:
- Ensuring ATS (Compare & Write) usage on recent VMware ESXi initiators.
- Allowing clustered (e.g. tcm-user) backends to block such requests,
avoiding the multi-node reservation state propagation.
When explicitly disabled, PR and RESERVE/RELEASE requests receive Invalid
Command Operation Code response sense data.
Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/libfc/fc_rport.c')
0 files changed, 0 insertions, 0 deletions