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| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-10-04 01:06:08 +0000 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-10-04 05:41:20 +0000 |
| commit | 92404e609a2dffc55a9a22540ed48b6f0edc9c59 (patch) | |
| tree | f815d53d2611a9b0cab864fc70bcffc26c8f043b /include/target | |
| parent | e24805637d2d270d7975502e9024d473de86afdb (diff) | |
| download | linux-92404e609a2dffc55a9a22540ed48b6f0edc9c59.tar.gz | |
target: Add force_pr_aptpl device attribute
This patch adds a force_pr_aptpl device attribute used to force SPC-3 PR Activate Persistence across Target Power Loss (APTPL) operation. This makes PR metadata write-out occur during state change regardless if new PERSISTENT_RESERVE_OUT CDBs have their APTPL feature bit set. This is useful during H/A failover in active/passive setups where all PR state is being re-created on a different node, driven by configfs backend device + export layout and pre-loaded $DEV/pr/res_aptpl_metadata. Cc: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include/target')
| -rw-r--r-- | include/target/target_core_base.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index b106240d8385..23c518a0340c 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -108,6 +108,8 @@ #define DA_EMULATE_ALUA 0 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */ #define DA_ENFORCE_PR_ISIDS 1 +/* Force SPC-3 PR Activate Persistence across Target Power Loss */ +#define DA_FORCE_PR_APTPL 0 #define DA_STATUS_MAX_SECTORS_MIN 16 #define DA_STATUS_MAX_SECTORS_MAX 8192 /* By default don't report non-rotating (solid state) medium */ @@ -680,6 +682,7 @@ struct se_dev_attrib { enum target_prot_type pi_prot_type; enum target_prot_type hw_pi_prot_type; int enforce_pr_isids; + int force_pr_aptpl; int is_nonrot; int emulate_rest_reord; u32 hw_block_size; |