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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Xose Vazquez Perez <xose.vazquez@gmail.com>
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Date: Sat, 25 Sep 2021 00:27:36 +0200
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Subject: [PATCH] multipath-tools: make IBM/XIV config work with alua and
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multibus
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And add recommended pgfailback value.
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ALUA is supported since XIV_Gen2 and microcode 10.2.1
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(All ports across all controllers in single Target Port Group)
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https://www.ibm.com/support/pages/ibm-flashsystem%C2%AE-a9000-and-a9000r-hyperswap-solution-deployment-linux%C2%AE-ibm-z-systems%C2%AE
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https://www.google.com/search?q=%222810XIV%22+%22path_grouping_policy%22+site%3Aibm.com
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Cc: Martin Wilck <mwilck@suse.com>
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Cc: Benjamin Marzinski <bmarzins@redhat.com>
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Cc: Christophe Varoqui <christophe.varoqui@opensvc.com>
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Cc: DM-DEVEL ML <dm-devel@redhat.com>
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Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
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Reviewed-by: Martin Wilck <mwilck@suse.com>
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Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
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---
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libmultipath/hwtable.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/libmultipath/hwtable.c b/libmultipath/hwtable.c
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index 0caac0da..72f81c60 100644
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--- a/libmultipath/hwtable.c
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+++ b/libmultipath/hwtable.c
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@@ -712,7 +712,8 @@ static struct hwentry default_hw[] = {
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.vendor = "(XIV|IBM)",
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.product = "(NEXTRA|2810XIV)",
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.no_path_retry = NO_PATH_RETRY_QUEUE,
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- .pgpolicy = MULTIBUS,
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+ .pgpolicy = GROUP_BY_PRIO,
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+ .pgfailback = 15,
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},
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{
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/* TMS RamSan / FlashSystem 710/720/810/820/840/900 */
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