[dm-devel] [PATCH] multipath-tools: make IBM/2107900 (DS8000) config work with alua and multibus
Xose Vazquez Perez
xose.vazquez at gmail.com
Tue Sep 28 16:52:10 UTC 2021
ALUA is supported since the beginning:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/scsi/device_handler/scsi_dh_alua.c?id=057ea7c9683c3d684128cced796f03c179ecf1c2#n683
... the DS8000 is an Asymmetric Logical Unit Access (ALUA) capable storage array,
pag#160(144): https://www.redbooks.ibm.com/redbooks/pdfs/sg248887.pdf
kernel log:
https://marc.info/?l=linux-scsi&m=156407413807511&q=mbox
Cc: Martin Wilck <mwilck at suse.com>
Cc: Benjamin Marzinski <bmarzins at redhat.com>
Cc: Christophe Varoqui <christophe.varoqui at opensvc.com>
Cc: DM-DEVEL ML <dm-devel at redhat.com>
Signed-off-by: Xose Vazquez Perez <xose.vazquez at gmail.com>
---
libmultipath/hwtable.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libmultipath/hwtable.c b/libmultipath/hwtable.c
index 72f81c60..f115c4f9 100644
--- a/libmultipath/hwtable.c
+++ b/libmultipath/hwtable.c
@@ -656,7 +656,8 @@ static struct hwentry default_hw[] = {
.vendor = "IBM",
.product = "^2107900",
.no_path_retry = NO_PATH_RETRY_QUEUE,
- .pgpolicy = MULTIBUS,
+ .pgpolicy = GROUP_BY_PRIO,
+ .pgfailback = -FAILBACK_IMMEDIATE,
},
{
// Storwize V5000 and V7000 lines / SAN Volume Controller (SVC) / Flex System V7000 /
--
2.32.0
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