| commit | 92404e609a2dffc55a9a22540ed48b6f0edc9c59 | |
| author | Nicholas Bellinger <nab@linux-iscsi.org> | |
| Sat, 4 Oct 2014 01:06:08 +0000 (4 01:06 +0000) | ||
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | |
| Sat, 4 Oct 2014 05:41:20 +0000 (4 05:41 +0000) | ||
| tree | f815d53d2611a9b0cab864fc70bcffc26c8f043b | treesnapshot (tar.gz zip) |
| parent | e24805637d2d270d7975502e9024d473de86afdb | commitdiff |
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>
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>