[blktests,2/3] nvme: add uuid parameter to _create_nvmet_subsystem

Commit Message

Johannes Thumshirn April 24, 2018, 4:12 p.m. UTC

Add an optional UUID parameter to _create_nvmet_subsystem().

Signed-off-by: Johannes Thumshirn <[e-mail]>
---
 common/nvme | 6 ++++++
 1 file changed, 6 insertions(+)

Patch

diff --git a/common/nvme b/common/nvme
index 506612f27297..c54b1eb8cee2 100644
--- a/common/nvme
+++ b/common/nvme
@@ -46,13 +46,19 @@  _remove_nvmet_port() {
 _create_nvmet_subsystem() {
 	local nvmet_subsystem="$1"
 	local blkdev="$2"
+	local uuid="00000000-0000-0000-0000-000000000000"
 	local nvmet_cfs="/sys/kernel/config/nvmet/"
 	local cfs_path="${nvmet_cfs}/subsystems/${nvmet_subsystem}"
 
+	if [[ $# -eq 3 ]]; then
+	    uuid="$3"
+	fi
+
 	mkdir -p "${cfs_path}"
 	echo 1 > "${cfs_path}/attr_allow_any_host"
 	mkdir "${cfs_path}/namespaces/1"
 	printf "%s" "$blkdev" > "${cfs_path}/namespaces/1/device_path"
+	printf "%s" "$uuid" > "${cfs_path}/namespaces/1/device_uuid"
 	printf 1 > "${cfs_path}/namespaces/1/enable"
 }