From bf1439420524fe66af93b3ffadbbe206e4283af0 Mon Sep 17 00:00:00 2001
From: Sun Zhenyuan <sunzhenyuan@baidu.com>
Date: Tue, 11 Sep 2018 13:22:40 -0400
Subject: [PATCH] nvme: printf info after error

Change-Id: I1812f4aa46ff1f2e464f40346bd012fe1f504011
Signed-off-by: Sun Zhenyuan <sunzhenyuan@baidu.com>
Reviewed-on: https://review.gerrithub.io/425467
Reviewed-by: GangCao <gang.cao@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
---
 lib/nvme/nvme_ns_cmd.c | 2 ++
 lib/nvme/nvme_qpair.c  | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/lib/nvme/nvme_ns_cmd.c b/lib/nvme/nvme_ns_cmd.c
index 5a694ad57..9562cf5a1 100644
--- a/lib/nvme/nvme_ns_cmd.c
+++ b/lib/nvme/nvme_ns_cmd.c
@@ -443,6 +443,8 @@ _nvme_ns_cmd_rw(struct spdk_nvme_ns *ns, struct spdk_nvme_qpair *qpair,
 
 	if (io_flags & 0xFFFF) {
 		/* The bottom 16 bits must be empty */
+		SPDK_ERRLOG("io_flags 0x%x bottom 16 bits is not empty\n",
+			    io_flags);
 		return NULL;
 	}
 
diff --git a/lib/nvme/nvme_qpair.c b/lib/nvme/nvme_qpair.c
index c092649f7..9f585798e 100644
--- a/lib/nvme/nvme_qpair.c
+++ b/lib/nvme/nvme_qpair.c
@@ -451,6 +451,8 @@ nvme_qpair_init(struct spdk_nvme_qpair *qpair, uint16_t id,
 	qpair->req_buf = spdk_zmalloc(req_size_padded * num_requests, 64, NULL,
 				      SPDK_ENV_SOCKET_ID_ANY, SPDK_MALLOC_SHARE);
 	if (qpair->req_buf == NULL) {
+		SPDK_ERRLOG("no memory to allocate qpair(cntlid:0x%x sqid:%d) req_buf with %d request\n",
+			    ctrlr->cntlid, qpair->id, num_requests);
 		return -ENOMEM;
 	}