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authorNicholas Bellinger <nab@linux-iscsi.org>2014-10-04 05:06:08 +0400
committerNicholas Bellinger <nab@linux-iscsi.org>2014-10-04 09:41:20 +0400
commit92404e609a2dffc55a9a22540ed48b6f0edc9c59 (patch)
treef815d53d2611a9b0cab864fc70bcffc26c8f043b /include/target
parente24805637d2d270d7975502e9024d473de86afdb (diff)
downloadlinux-92404e609a2dffc55a9a22540ed48b6f0edc9c59.tar.xz
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.h3
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;