From 6ac23b3e600b21a842b20d9e523cf2d5b92c7871 Mon Sep 17 00:00:00 2001
From: Shuhei Matsumoto <smatsumoto@nvidia.com>
Date: Mon, 10 Jan 2022 08:15:50 +0900
Subject: [PATCH] bdev/nvme: Clear I/O path cache if a path whose ns is
 optimized is restored

If a path whose namespace is optimized is restored, the corresponding
I/O path cache should be cleared and the path should be chosen as the
optimal path.

This bug was found by a system test.

Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Change-Id: Ibc3983dbff3418adb090a09df32c2a92a8910d05
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11004
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Monica Kenguva <monica.kenguva@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
---
 module/bdev/nvme/bdev_nvme.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/module/bdev/nvme/bdev_nvme.c b/module/bdev/nvme/bdev_nvme.c
index baede5894..5d9f9b72b 100644
--- a/module/bdev/nvme/bdev_nvme.c
+++ b/module/bdev/nvme/bdev_nvme.c
@@ -1222,6 +1222,8 @@ bdev_nvme_create_qpair(struct nvme_ctrlr_channel *ctrlr_ch)
 
 	ctrlr_ch->qpair = qpair;
 
+	_bdev_nvme_clear_io_path_cache(ctrlr_ch);
+
 	return 0;
 
 err: