[PATCH] multipath-tools: add more info for NetApp RDAC arrays

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From:
https://library.netapp.com/ecmdocs/ECMLP2439710/html/GUID-49E94674-947F-4921-A1D1-CE9B42DCBA39.html
https://library.netapp.com/ecmdocs/ECMLP2439710/html/GUID-CA17AE34-F5B2-4FF4-8FD4-4A7AA4238976.html
https://library.netapp.com/ecmdocs/ECMLP2439710/html/GUID-3DA657A9-FF4A-4237-90EC-BA8863B7431E.html

To use ALUA mode, "Automatic Load Balancing" should be enabled and
"Select operating system:" should be changed to "Linux DM-MP (Kernel 3.10 or later)".

To use RDAC mode, "Automatic Load Balancing" should be disabled and
"Select operating system:" should be changed to "Linux DM-MP (Kernel 3.9 or earlier)".


Add it to prio and hardware_handler, and to alua info.


Cc: NetApp RDAC team <ng-eseries-upstream-maintainers@xxxxxxxxxx>
Cc: Martin Wilck <mwilck@xxxxxxxx>
Cc: Benjamin Marzinski <bmarzins@xxxxxxxxxx>
Cc: Christophe Varoqui <christophe.varoqui@xxxxxxxxxxx>
Cc: DM-DEVEL ML <dm-devel@xxxxxxxxxx>
Signed-off-by: Xose Vazquez Perez <xose.vazquez@xxxxxxxxx>
---
 README.md                  | 5 +++--
 multipath/multipath.conf.5 | 8 +++++---
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index b05b1332..4e34c591 100644
--- a/README.md
+++ b/README.md
@@ -165,8 +165,9 @@ To enable ALUA, the following options should be changed:
    "LUN Affinity" and "ALUA" should be changed to "Enable", "Redundancy Type"
    must be "Active-Active".
 
-- LSI/Engenio/NetApp RDAC class, as NetApp SANtricity E/EF Series and OEM arrays:
-   "Select operating system:" should be changed to "Linux DM-MP (Kernel 3.10 or later)".
+- LSI/Engenio/NetApp RDAC class, as NetApp SANtricity E/EF Series and rebranded arrays:
+  "Automatic Load Balancing" should be enabled and "Select operating system:"
+  should be changed to "Linux DM-MP (Kernel 3.10 or later)".
 
 - NetApp ONTAP:
    To check ALUA state: "igroup show -v <igroup_name>", and to enable ALUA:
diff --git a/multipath/multipath.conf.5 b/multipath/multipath.conf.5
index acdd1ae6..58080990 100644
--- a/multipath/multipath.conf.5
+++ b/multipath/multipath.conf.5
@@ -6,7 +6,7 @@
 .\" Update the date below if you make any significant change.
 .\" ----------------------------------------------------------------------------
 .
-.TH MULTIPATH.CONF 5 2021-09-08 Linux
+.TH MULTIPATH.CONF 5 2022-08-14 Linux
 .
 .
 .\" ----------------------------------------------------------------------------
@@ -320,7 +320,8 @@ Generate the path priority for NetApp ONTAP class, and rebranded arrays.
 .I rdac
 (Hardware-dependent)
 Generate the path priority for LSI/Engenio/NetApp RDAC class as NetApp SANtricity
-E/EF Series, and rebranded arrays.
+E/EF Series and rebranded arrays, with Automatic Load Balancing disabled and
+Select operating system: Linux DM-MP (Kernel 3.9 or earlier).
 .TP
 .I hp_sw
 (Hardware-dependent)
@@ -1568,7 +1569,8 @@ with Failover Mode 1 (Passive Not Ready(PNR)).
 .I 1 rdac
 (Hardware-dependent)
 Hardware handler for LSI/Engenio/NetApp RDAC class as NetApp SANtricity E/EF
-Series, and rebranded arrays.
+Series and rebranded arrays, with Automatic Load Balancing disabled and
+Select operating system: Linux DM-MP (Kernel 3.9 or earlier).
 .TP
 .I 1 hp_sw
 (Hardware-dependent)
-- 
2.37.2

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