Use multibus policy for NetApp NVMe-FC namespace controllers.
The search logic in find_hwe() looks for vendor/product matches backwards, and
quits if a match is found. Therefore specific sub-entries of a generic entry
have to be listed below the generic ones. Therefore, pull the generic NVME
entry with ".*" product name match on top. The NetApp-specific one is put
into the NetApp section. This way, more vendor-specific exceptions for NVME
may be added later.
---
libmultipath/hwtable.c | 37 +++++++++++++++++++++++++++----------
1 file changed, 27 insertions(+), 10 deletions(-)
diff --git a/libmultipath/hwtable.c b/libmultipath/hwtable.c
index 448effe3c859..1cde60a6a41d 100644
--- a/libmultipath/hwtable.c
+++ b/libmultipath/hwtable.c
@@ -77,6 +77,20 @@
#endif
static struct hwentry default_hw[] = {
+ /*
+ * Generic NVMe devices
+ *
+ * Due to the parsing logic in find_hwe(), generic entries
+ * have to be put on top of this list, and more specific ones
+ * below.
+ */
+ {
+ .vendor = "NVME",
+ .product = ".*",
+ .uid_attribute = "ID_WWN",
+ .checker_name = NONE,
+ .retain_hwhandler = RETAIN_HWHANDLER_OFF,
+ },
/*
* Apple
*
@@ -666,6 +680,19 @@ static struct hwentry default_hw[] = {
.pgpolicy = MULTIBUS,
.no_path_retry = 24,
},
+ /*
+ * NetApp NVMe-FC namespace devices: MULTIBUS preferred
+ *
+ * The table is searched backwards, so place this after generic NVMe
+ */
+ {
+ .vendor = "NVME",
+ .product = "(NetApp |)ONTAP Controller)",
+ .uid_attribute = "ID_WWN",
+ .checker_name = NONE,
+ .pgpolicy = MULTIBUS,
+ .retain_hwhandler = RETAIN_HWHANDLER_OFF,
+ },
/*
* Nexenta
*
@@ -1133,16 +1160,6 @@ static struct hwentry default_hw[] = {
.prio_name = PRIO_ALUA,
.no_path_retry = 30,
},
- /*
- * Generic NVMe devices
- */
- {
- .vendor = "NVME",
- .product = ".*",
- .uid_attribute = "ID_WWN",
- .checker_name = NONE,
- .retain_hwhandler = RETAIN_HWHANDLER_OFF,
- },
/*
* Dot Hill Systems - Seagate Technology
*/
--
2.15.1
--
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