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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 /drivers/target/target_core_configfs.c | |
| parent | e24805637d2d270d7975502e9024d473de86afdb (diff) | |
| download | linux-92404e609a2dffc55a9a22540ed48b6f0edc9c59.tar.bz2 | |
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 'drivers/target/target_core_configfs.c')
| -rw-r--r-- | drivers/target/target_core_configfs.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c index 291dc711fbc3..b30fc8f53bd8 100644 --- a/drivers/target/target_core_configfs.c +++ b/drivers/target/target_core_configfs.c @@ -665,6 +665,9 @@ SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR); DEF_DEV_ATTRIB(emulate_rest_reord); SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR); +DEF_DEV_ATTRIB(force_pr_aptpl); +SE_DEV_ATTR(force_pr_aptpl, S_IRUGO | S_IWUSR); + DEF_DEV_ATTRIB_RO(hw_block_size); SE_DEV_ATTR_RO(hw_block_size); @@ -719,6 +722,7 @@ static struct configfs_attribute *target_core_dev_attrib_attrs[] = { &target_core_dev_attrib_hw_pi_prot_type.attr, &target_core_dev_attrib_pi_prot_format.attr, &target_core_dev_attrib_enforce_pr_isids.attr, + &target_core_dev_attrib_force_pr_aptpl.attr, &target_core_dev_attrib_is_nonrot.attr, &target_core_dev_attrib_emulate_rest_reord.attr, &target_core_dev_attrib_hw_block_size.attr, |