[dm-devel] [PATCH] multipath-tools: make IBM/XIV config work with alua and multibus

* [dm-devel] [PATCH] multipath-tools: make IBM/XIV config work with alua and multibus
@ 2021-09-24 22:27 Xose Vazquez Perez
  2021-09-28  7:36 ` Martin Wilck
  0 siblings, 1 reply; 2+ messages in thread
From: Xose Vazquez Perez @ 2021-09-24 22:27 UTC (permalink / raw)
  Cc: Xose Vazquez Perez, Martin Wilck, DM-DEVEL ML

And add recommended pgfailback value.

ALUA is supported since XIV_Gen2 and microcode 10.2.1
(All ports across all controllers in single Target Port Group)

https://www.ibm.com/support/pages/ibm-flashsystem%C2%AE-a9000-and-a9000r-hyperswap-solution-deployment-linux%C2%AE-ibm-z-systems%C2%AE
https://www.google.com/search?q=%222810XIV%22+%22path_grouping_policy%22+site%3Aibm.com

Cc: Martin Wilck <mwilck@suse.com>
Cc: Benjamin Marzinski <bmarzins@redhat.com>
Cc: Christophe Varoqui <christophe.varoqui@opensvc.com>
Cc: DM-DEVEL ML <dm-devel@redhat.com>
Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
---
 libmultipath/hwtable.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libmultipath/hwtable.c b/libmultipath/hwtable.c
index 0caac0da..72f81c60 100644
--- a/libmultipath/hwtable.c
+++ b/libmultipath/hwtable.c
@@ -712,7 +712,8 @@ static struct hwentry default_hw[] = {
 		.vendor        = "(XIV|IBM)",
 		.product       = "(NEXTRA|2810XIV)",
 		.no_path_retry = NO_PATH_RETRY_QUEUE,
-		.pgpolicy      = MULTIBUS,
+		.pgpolicy      = GROUP_BY_PRIO,
+		.pgfailback    = 15,
 	},
 	{
 		/* TMS RamSan / FlashSystem 710/720/810/820/840/900 */
-- 
2.32.0

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