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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: Tue, 28 Sep 2021 19:31:21 +0200
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Subject: [PATCH] multipath-tools: make EMC/Invista config work with alua and
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multibus
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Optimal Path Management (OPM) was introduced with VPLEX 5.5 to improve VPLEX
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performance. OPM uses the ALUA mechanism to spread the I/O load across VPLEX directors
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while gaining cache locality, pag #187:
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https://www.delltechnologies.com/en-us/collaterals/unauth/technical-guides-support-information/products/storage-2/docu5128.pdf
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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 7095aaf1..4e8b52ff 100644
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--- a/libmultipath/hwtable.c
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+++ b/libmultipath/hwtable.c
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@@ -350,8 +350,9 @@ static struct hwentry default_hw[] = {
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.vendor = "EMC",
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.product = "Invista",
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.bl_product = "LUNZ",
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- .pgpolicy = MULTIBUS,
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+ .pgpolicy = GROUP_BY_PRIO,
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.no_path_retry = 5,
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+ .pgfailback = -FAILBACK_IMMEDIATE,
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},
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{
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/* XtremIO */
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