[ndctl PATCH v2] ndctl: complete move to "fsdax" and "devdax"

[ndctl PATCH v2] ndctl: complete move to "fsdax" and "devdax"

[Ross Zwisler]

Add on to the work started by:

commit ebb4fb605e68 ("ndctl, create-namespace: introduce "fsdax" and "devdax" modes")

and change some more user visible places to use "fsdax" and "devdax" modes
instead of "memory" and "dax", respectively.  Having multiple terms for the
same mode is confusing for users.

We will continue to accept "memory" and "dax" as parameters, but all output
and man pages will now use the updated terms.

Note that after the above referenced commit we still printed the old names
in the default 'ndctl list' output for backward compatibility with scripts.
This patch intentionally breaks that backward compatibility in favor of
avoiding confusion and using the new mode names everywhere.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
---
 Documentation/ndctl/ndctl-inject-error.txt |  2 +-
 Documentation/ndctl/ndctl-list.txt         |  6 +++---
 ndctl/namespace.c                          | 16 ++++++++--------
 util/json.c                                | 10 ++--------
 4 files changed, 14 insertions(+), 20 deletions(-)

diff --git a/Documentation/ndctl/ndctl-inject-error.txt b/Documentation/ndctl/ndctl-inject-error.txt
index 01f6c22..94c4e69 100644
--- a/Documentation/ndctl/ndctl-inject-error.txt
+++ b/Documentation/ndctl/ndctl-inject-error.txt
@@ -45,7 +45,7 @@ OPTIONS
 
 	NOTE: The offset is interpreted in different ways based on the "mode"
 	of the namespace. For "raw" mode, the offset is the base namespace
-	offset. For "memory" mode (i.e. a "pfn" namespace), the offset is
+	offset. For "fsdax" mode (i.e. a "pfn" namespace), the offset is
 	relative to the user-visible part of the namespace, and the offset
 	introduced by the kernel's metadata will be accounted for. For a
 	"sector" mode namespace (i.e. a "BTT" namespace), the offset is
diff --git a/Documentation/ndctl/ndctl-list.txt b/Documentation/ndctl/ndctl-list.txt
index 04affc4..2abc572 100644
--- a/Documentation/ndctl/ndctl-list.txt
+++ b/Documentation/ndctl/ndctl-list.txt
@@ -49,7 +49,7 @@ EXAMPLE
   "namespaces":[
     {
       "dev":"namespace0.0",
-      "mode":"memory",
+      "mode":"fsdax",
       "size":8589934592,
       "blockdev":"pmem0"
     }
@@ -132,11 +132,11 @@ include::xable-region-options.txt[]
 -X::
 --device-dax::
 	Include device-dax ("daxregion") details when a namespace is in
-	"dax" mode.
+	"devdax" mode.
 [verse]
 {
   "dev":"namespace0.0",
-  "mode":"dax",
+  "mode":"devdax",
   "size":4225761280,
   "uuid":"18ae1bbb-bb62-4efc-86df-4a5caacb5dcc",
   "daxregion":{
diff --git a/ndctl/namespace.c b/ndctl/namespace.c
index f2c5644..fe86d82 100644
--- a/ndctl/namespace.c
+++ b/ndctl/namespace.c
@@ -103,7 +103,7 @@ OPT_STRING('n', "name", &param.name, "name", \
 OPT_STRING('s', "size", &param.size, "size", \
 	"specify the namespace size in bytes (default: available capacity)"), \
 OPT_STRING('m', "mode", &param.mode, "operation-mode", \
-	"specify a mode for the namespace, 'sector', 'memory', or 'raw'"), \
+	"specify a mode for the namespace, 'sector', 'fsdax', 'devdax' or 'raw'"), \
 OPT_STRING('M', "map", &param.map, "memmap-location", \
 	"specify 'mem' or 'dev' for the location of the memmap"), \
 OPT_STRING('l', "sector-size", &param.sector_size, "lba-size", \
@@ -533,7 +533,7 @@ static int validate_namespace_options(struct ndctl_region *region,
 			 * supported a 2M default alignment when
 			 * ndctl_pfn_has_align() returns false.
 			 */
-			debug("%s not support 'align' for memory mode\n",
+			debug("%s not support 'align' for fsdax mode\n",
 					region_name);
 			return -EAGAIN;
 		} else if (p->mode == NDCTL_NS_MODE_DAX
@@ -542,7 +542,7 @@ static int validate_namespace_options(struct ndctl_region *region,
 			 * Unlike the pfn case, we require the kernel to
 			 * have 'align' support for device-dax.
 			 */
-			debug("%s not support 'align' for dax mode\n",
+			debug("%s not support 'align' for devdax mode\n",
 					region_name);
 			return -EAGAIN;
 		} else if (!param.align_default
@@ -696,7 +696,7 @@ static int validate_namespace_options(struct ndctl_region *region,
 
 		if (ndns && p->mode != NDCTL_NS_MODE_MEMORY
 			&& p->mode != NDCTL_NS_MODE_DAX) {
-			debug("%s: --map= only valid for memory mode namespace\n",
+			debug("%s: --map= only valid for fsdax mode namespace\n",
 				ndctl_namespace_get_devname(ndns));
 			return -EINVAL;
 		}
@@ -709,10 +709,10 @@ static int validate_namespace_options(struct ndctl_region *region,
 		struct ndctl_pfn *pfn = ndctl_region_get_pfn_seed(region);
 
 		if (!pfn && param.mode_default) {
-			debug("%s memory mode not available\n", region_name);
+			debug("%s fsdax mode not available\n", region_name);
 			p->mode = NDCTL_NS_MODE_RAW;
 		} else if (!pfn) {
-			error("operation failed, %s memory mode not available\n",
+			error("operation failed, %s fsdax mode not available\n",
 					region_name);
 			return -EINVAL;
 		}
@@ -723,7 +723,7 @@ static int validate_namespace_options(struct ndctl_region *region,
 		struct ndctl_dax *dax = ndctl_region_get_dax_seed(region);
 
 		if (!dax) {
-			error("operation failed, %s dax mode not available\n",
+			error("operation failed, %s devdax mode not available\n",
 					region_name);
 			return -EINVAL;
 		}
@@ -759,7 +759,7 @@ static int namespace_create(struct ndctl_region *region)
 		return rc;
 
 	if (ndctl_region_get_ro(region)) {
-		debug("%s: read-only, inelligible for namespace creation\n",
+		debug("%s: read-only, ineligible for namespace creation\n",
 			devname);
 		return -EAGAIN;
 	}
diff --git a/util/json.c b/util/json.c
index 5b4b4c3..8d65525 100644
--- a/util/json.c
+++ b/util/json.c
@@ -685,19 +685,13 @@ struct json_object *util_namespace_to_json(struct ndctl_namespace *ndns,
 			size = ndctl_pfn_get_size(pfn);
 		else /* native/static memory mode */
 			size = ndctl_namespace_get_size(ndns);
-		if (flags & UTIL_JSON_HUMAN)
-			jobj = json_object_new_string("fsdax");
-		else
-			jobj = json_object_new_string("memory");
+		jobj = json_object_new_string("fsdax");
 		break;
 	case NDCTL_NS_MODE_DAX:
 		if (!dax)
 			goto err;
 		size = ndctl_dax_get_size(dax);
-		if (flags & UTIL_JSON_HUMAN)
-			jobj = json_object_new_string("devdax");
-		else
-			jobj = json_object_new_string("dax");
+		jobj = json_object_new_string("devdax");
 		break;
 	case NDCTL_NS_MODE_SAFE:
 		if (!btt)
-- 
2.14.3

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Re: [ndctl PATCH v2] ndctl: complete move to "fsdax" and "devdax"

[Verma, Vishal L]

On Tue, 2018-04-10 at 11:09 -0600, Ross Zwisler wrote:
> Add on to the work started by:
> 
> commit ebb4fb605e68 ("ndctl, create-namespace: introduce "fsdax" and
> "devdax" modes")
> 
> and change some more user visible places to use "fsdax" and "devdax"
> modes
> instead of "memory" and "dax", respectively.  Having multiple terms for
> the
> same mode is confusing for users.
> 
> We will continue to accept "memory" and "dax" as parameters, but all
> output
> and man pages will now use the updated terms.
> 
> Note that after the above referenced commit we still printed the old
> names
> in the default 'ndctl list' output for backward compatibility with
> scripts.
> This patch intentionally breaks that backward compatibility in favor of
> avoiding confusion and using the new mode names everywhere.
> 
> Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
> ---
>  Documentation/ndctl/ndctl-inject-error.txt |  2 +-
>  Documentation/ndctl/ndctl-list.txt         |  6 +++---
>  ndctl/namespace.c                          | 16 ++++++++--------
>  util/json.c                                | 10 ++--------
>  4 files changed, 14 insertions(+), 20 deletions(-)

This also needs unit test updates to create.sh and clear.sh as they look
for 'memory'

> 
> diff --git a/Documentation/ndctl/ndctl-inject-error.txt
> b/Documentation/ndctl/ndctl-inject-error.txt
> index 01f6c22..94c4e69 100644
> --- a/Documentation/ndctl/ndctl-inject-error.txt
> +++ b/Documentation/ndctl/ndctl-inject-error.txt
> @@ -45,7 +45,7 @@ OPTIONS
>  
>  	NOTE: The offset is interpreted in different ways based on the
> "mode"
>  	of the namespace. For "raw" mode, the offset is the base
> namespace
> -	offset. For "memory" mode (i.e. a "pfn" namespace), the offset
> is
> +	offset. For "fsdax" mode (i.e. a "pfn" namespace), the offset is
>  	relative to the user-visible part of the namespace, and the
> offset
>  	introduced by the kernel's metadata will be accounted for. For a
>  	"sector" mode namespace (i.e. a "BTT" namespace), the offset is
> diff --git a/Documentation/ndctl/ndctl-list.txt
> b/Documentation/ndctl/ndctl-list.txt
> index 04affc4..2abc572 100644
> --- a/Documentation/ndctl/ndctl-list.txt
> +++ b/Documentation/ndctl/ndctl-list.txt
> @@ -49,7 +49,7 @@ EXAMPLE
>    "namespaces":[
>      {
>        "dev":"namespace0.0",
> -      "mode":"memory",
> +      "mode":"fsdax",
>        "size":8589934592,
>        "blockdev":"pmem0"
>      }
> @@ -132,11 +132,11 @@ include::xable-region-options.txt[]
>  -X::
>  --device-dax::
>  	Include device-dax ("daxregion") details when a namespace is in
> -	"dax" mode.
> +	"devdax" mode.
>  [verse]
>  {
>    "dev":"namespace0.0",
> -  "mode":"dax",
> +  "mode":"devdax",
>    "size":4225761280,
>    "uuid":"18ae1bbb-bb62-4efc-86df-4a5caacb5dcc",
>    "daxregion":{
> diff --git a/ndctl/namespace.c b/ndctl/namespace.c
> index f2c5644..fe86d82 100644
> --- a/ndctl/namespace.c
> +++ b/ndctl/namespace.c
> @@ -103,7 +103,7 @@ OPT_STRING('n', "name", &param.name, "name", \
>  OPT_STRING('s', "size", &param.size, "size", \
>  	"specify the namespace size in bytes (default: available
> capacity)"), \
>  OPT_STRING('m', "mode", &param.mode, "operation-mode", \
> -	"specify a mode for the namespace, 'sector', 'memory', or
> 'raw'"), \
> +	"specify a mode for the namespace, 'sector', 'fsdax', 'devdax'
> or 'raw'"), \
>  OPT_STRING('M', "map", &param.map, "memmap-location", \
>  	"specify 'mem' or 'dev' for the location of the memmap"), \
>  OPT_STRING('l', "sector-size", &param.sector_size, "lba-size", \
> @@ -533,7 +533,7 @@ static int validate_namespace_options(struct
> ndctl_region *region,
>  			 * supported a 2M default alignment when
>  			 * ndctl_pfn_has_align() returns false.
>  			 */
> -			debug("%s not support 'align' for memory
> mode\n",
> +			debug("%s not support 'align' for fsdax mode\n",
>  					region_name);
>  			return -EAGAIN;
>  		} else if (p->mode == NDCTL_NS_MODE_DAX
> @@ -542,7 +542,7 @@ static int validate_namespace_options(struct
> ndctl_region *region,
>  			 * Unlike the pfn case, we require the kernel to
>  			 * have 'align' support for device-dax.
>  			 */
> -			debug("%s not support 'align' for dax mode\n",
> +			debug("%s not support 'align' for devdax
> mode\n",
>  					region_name);
>  			return -EAGAIN;
>  		} else if (!param.align_default
> @@ -696,7 +696,7 @@ static int validate_namespace_options(struct
> ndctl_region *region,
>  
>  		if (ndns && p->mode != NDCTL_NS_MODE_MEMORY
>  			&& p->mode != NDCTL_NS_MODE_DAX) {
> -			debug("%s: --map= only valid for memory mode
> namespace\n",
> +			debug("%s: --map= only valid for fsdax mode
> namespace\n",
>  				ndctl_namespace_get_devname(ndns));
>  			return -EINVAL;
>  		}
> @@ -709,10 +709,10 @@ static int validate_namespace_options(struct
> ndctl_region *region,
>  		struct ndctl_pfn *pfn =
> ndctl_region_get_pfn_seed(region);
>  
>  		if (!pfn && param.mode_default) {
> -			debug("%s memory mode not available\n",
> region_name);
> +			debug("%s fsdax mode not available\n",
> region_name);
>  			p->mode = NDCTL_NS_MODE_RAW;
>  		} else if (!pfn) {
> -			error("operation failed, %s memory mode not
> available\n",
> +			error("operation failed, %s fsdax mode not
> available\n",
>  					region_name);
>  			return -EINVAL;
>  		}
> @@ -723,7 +723,7 @@ static int validate_namespace_options(struct
> ndctl_region *region,
>  		struct ndctl_dax *dax =
> ndctl_region_get_dax_seed(region);
>  
>  		if (!dax) {
> -			error("operation failed, %s dax mode not
> available\n",
> +			error("operation failed, %s devdax mode not
> available\n",
>  					region_name);
>  			return -EINVAL;
>  		}
> @@ -759,7 +759,7 @@ static int namespace_create(struct ndctl_region
> *region)
>  		return rc;
>  
>  	if (ndctl_region_get_ro(region)) {
> -		debug("%s: read-only, inelligible for namespace
> creation\n",
> +		debug("%s: read-only, ineligible for namespace
> creation\n",
>  			devname);
>  		return -EAGAIN;
>  	}
> diff --git a/util/json.c b/util/json.c
> index 5b4b4c3..8d65525 100644
> --- a/util/json.c
> +++ b/util/json.c
> @@ -685,19 +685,13 @@ struct json_object *util_namespace_to_json(struct
> ndctl_namespace *ndns,
>  			size = ndctl_pfn_get_size(pfn);
>  		else /* native/static memory mode */
>  			size = ndctl_namespace_get_size(ndns);
> -		if (flags & UTIL_JSON_HUMAN)
> -			jobj = json_object_new_string("fsdax");
> -		else
> -			jobj = json_object_new_string("memory");
> +		jobj = json_object_new_string("fsdax");
>  		break;
>  	case NDCTL_NS_MODE_DAX:
>  		if (!dax)
>  			goto err;
>  		size = ndctl_dax_get_size(dax);
> -		if (flags & UTIL_JSON_HUMAN)
> -			jobj = json_object_new_string("devdax");
> -		else
> -			jobj = json_object_new_string("dax");
> +		jobj = json_object_new_string("devdax");
>  		break;
>  	case NDCTL_NS_MODE_SAFE:
>  		if (!btt)
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[ndctl PATCH v3] ndctl: complete move to "fsdax" and "devdax"

[Ross Zwisler]

Add on to the work started by:

commit ebb4fb605e68 ("ndctl, create-namespace: introduce "fsdax" and "devdax" modes")

and change some more user visible places to use "fsdax" and "devdax" modes
instead of "memory" and "dax", respectively.  Having multiple terms for the
same mode is confusing for users.

We will continue to accept "memory" and "dax" as parameters, but all output
and man pages will now use the updated terms.

Note that after the above referenced commit we still printed the old names
in the default 'ndctl list' output for backward compatibility with scripts.
This patch intentionally breaks that backward compatibility in favor of
avoiding confusion and using the new mode names everywhere.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
---

Changes since v2:
 - Update files in the 'test' directory as well. (Vishal)

I've executed all the ndctl unit tests in an nfit_test setup and made
sure everything still passes.

---
 Documentation/ndctl/ndctl-inject-error.txt |  2 +-
 Documentation/ndctl/ndctl-list.txt         |  6 +++---
 ndctl/namespace.c                          | 16 ++++++++--------
 test/btt-pad-compat.sh                     |  2 +-
 test/clear.sh                              |  6 +++---
 test/create.sh                             |  6 +++---
 test/dax.sh                                | 12 ++++++------
 test/daxdev-errors.sh                      |  8 ++++----
 test/device-dax-fio.sh                     |  6 +++---
 test/device-dax.c                          | 10 +++++-----
 test/inject-error.sh                       |  2 +-
 test/libndctl.c                            |  2 +-
 test/multi-dax.sh                          |  8 ++++----
 test/rescan-partitions.sh                  |  2 +-
 util/json.c                                | 10 ++--------
 15 files changed, 46 insertions(+), 52 deletions(-)

diff --git a/Documentation/ndctl/ndctl-inject-error.txt b/Documentation/ndctl/ndctl-inject-error.txt
index 01f6c22..94c4e69 100644
--- a/Documentation/ndctl/ndctl-inject-error.txt
+++ b/Documentation/ndctl/ndctl-inject-error.txt
@@ -45,7 +45,7 @@ OPTIONS
 
 	NOTE: The offset is interpreted in different ways based on the "mode"
 	of the namespace. For "raw" mode, the offset is the base namespace
-	offset. For "memory" mode (i.e. a "pfn" namespace), the offset is
+	offset. For "fsdax" mode (i.e. a "pfn" namespace), the offset is
 	relative to the user-visible part of the namespace, and the offset
 	introduced by the kernel's metadata will be accounted for. For a
 	"sector" mode namespace (i.e. a "BTT" namespace), the offset is
diff --git a/Documentation/ndctl/ndctl-list.txt b/Documentation/ndctl/ndctl-list.txt
index 04affc4..2abc572 100644
--- a/Documentation/ndctl/ndctl-list.txt
+++ b/Documentation/ndctl/ndctl-list.txt
@@ -49,7 +49,7 @@ EXAMPLE
   "namespaces":[
     {
       "dev":"namespace0.0",
-      "mode":"memory",
+      "mode":"fsdax",
       "size":8589934592,
       "blockdev":"pmem0"
     }
@@ -132,11 +132,11 @@ include::xable-region-options.txt[]
 -X::
 --device-dax::
 	Include device-dax ("daxregion") details when a namespace is in
-	"dax" mode.
+	"devdax" mode.
 [verse]
 {
   "dev":"namespace0.0",
-  "mode":"dax",
+  "mode":"devdax",
   "size":4225761280,
   "uuid":"18ae1bbb-bb62-4efc-86df-4a5caacb5dcc",
   "daxregion":{
diff --git a/ndctl/namespace.c b/ndctl/namespace.c
index f2c5644..fe86d82 100644
--- a/ndctl/namespace.c
+++ b/ndctl/namespace.c
@@ -103,7 +103,7 @@ OPT_STRING('n', "name", &param.name, "name", \
 OPT_STRING('s', "size", &param.size, "size", \
 	"specify the namespace size in bytes (default: available capacity)"), \
 OPT_STRING('m', "mode", &param.mode, "operation-mode", \
-	"specify a mode for the namespace, 'sector', 'memory', or 'raw'"), \
+	"specify a mode for the namespace, 'sector', 'fsdax', 'devdax' or 'raw'"), \
 OPT_STRING('M', "map", &param.map, "memmap-location", \
 	"specify 'mem' or 'dev' for the location of the memmap"), \
 OPT_STRING('l', "sector-size", &param.sector_size, "lba-size", \
@@ -533,7 +533,7 @@ static int validate_namespace_options(struct ndctl_region *region,
 			 * supported a 2M default alignment when
 			 * ndctl_pfn_has_align() returns false.
 			 */
-			debug("%s not support 'align' for memory mode\n",
+			debug("%s not support 'align' for fsdax mode\n",
 					region_name);
 			return -EAGAIN;
 		} else if (p->mode == NDCTL_NS_MODE_DAX
@@ -542,7 +542,7 @@ static int validate_namespace_options(struct ndctl_region *region,
 			 * Unlike the pfn case, we require the kernel to
 			 * have 'align' support for device-dax.
 			 */
-			debug("%s not support 'align' for dax mode\n",
+			debug("%s not support 'align' for devdax mode\n",
 					region_name);
 			return -EAGAIN;
 		} else if (!param.align_default
@@ -696,7 +696,7 @@ static int validate_namespace_options(struct ndctl_region *region,
 
 		if (ndns && p->mode != NDCTL_NS_MODE_MEMORY
 			&& p->mode != NDCTL_NS_MODE_DAX) {
-			debug("%s: --map= only valid for memory mode namespace\n",
+			debug("%s: --map= only valid for fsdax mode namespace\n",
 				ndctl_namespace_get_devname(ndns));
 			return -EINVAL;
 		}
@@ -709,10 +709,10 @@ static int validate_namespace_options(struct ndctl_region *region,
 		struct ndctl_pfn *pfn = ndctl_region_get_pfn_seed(region);
 
 		if (!pfn && param.mode_default) {
-			debug("%s memory mode not available\n", region_name);
+			debug("%s fsdax mode not available\n", region_name);
 			p->mode = NDCTL_NS_MODE_RAW;
 		} else if (!pfn) {
-			error("operation failed, %s memory mode not available\n",
+			error("operation failed, %s fsdax mode not available\n",
 					region_name);
 			return -EINVAL;
 		}
@@ -723,7 +723,7 @@ static int validate_namespace_options(struct ndctl_region *region,
 		struct ndctl_dax *dax = ndctl_region_get_dax_seed(region);
 
 		if (!dax) {
-			error("operation failed, %s dax mode not available\n",
+			error("operation failed, %s devdax mode not available\n",
 					region_name);
 			return -EINVAL;
 		}
@@ -759,7 +759,7 @@ static int namespace_create(struct ndctl_region *region)
 		return rc;
 
 	if (ndctl_region_get_ro(region)) {
-		debug("%s: read-only, inelligible for namespace creation\n",
+		debug("%s: read-only, ineligible for namespace creation\n",
 			devname);
 		return -EAGAIN;
 	}
diff --git a/test/btt-pad-compat.sh b/test/btt-pad-compat.sh
index b2e395d..281a8e5 100755
--- a/test/btt-pad-compat.sh
+++ b/test/btt-pad-compat.sh
@@ -26,7 +26,7 @@ trap 'err $LINENO' ERR
 # sample json:
 #{
 #  "dev":"namespace7.0",
-#  "mode":"memory",
+#  "mode":"fsdax",
 #  "size":"60.00 MiB (62.92 MB)",
 #  "uuid":"f1baa71a-d165-4da4-bb6a-083a2b0e6469",
 #  "blockdev":"pmem7",
diff --git a/test/clear.sh b/test/clear.sh
index 635e11d..d64dd27 100755
--- a/test/clear.sh
+++ b/test/clear.sh
@@ -69,10 +69,10 @@ fi
 size_raw=$size
 sector_raw=$sector
 
-# convert pmem to memory mode
-json=$($NDCTL create-namespace -m memory -f -e $dev)
+# convert pmem to fsdax mode
+json=$($NDCTL create-namespace -m fsdax -f -e $dev)
 eval $(echo $json | sed -e "$json2var")
-[ $mode != "memory" ] && echo "fail: $LINENO" && exit 1
+[ $mode != "fsdax" ] && echo "fail: $LINENO" && exit 1
 
 # check for errors relative to the offset injected by the pfn device
 read sector len < /sys/block/$blockdev/badblocks
diff --git a/test/create.sh b/test/create.sh
index 4eea78a..3f30d6e 100755
--- a/test/create.sh
+++ b/test/create.sh
@@ -54,10 +54,10 @@ eval $(echo $json | sed -e "$json2var")
 [ $dev = "x" ] && echo "fail: $LINENO" && exit 1
 [ $mode != "raw" ] && echo "fail: $LINENO" &&  exit 1
 
-# convert pmem to memory mode
-json=$($NDCTL create-namespace -m memory -f -e $dev)
+# convert pmem to fsdax mode
+json=$($NDCTL create-namespace -m fsdax -f -e $dev)
 eval $(echo $json | sed -e "$json2var")
-[ $mode != "memory" ] && echo "fail: $LINENO" &&  exit 1
+[ $mode != "fsdax" ] && echo "fail: $LINENO" &&  exit 1
 
 # convert pmem to sector mode
 json=$($NDCTL create-namespace -m sector -l $SECTOR_SIZE -f -e $dev)
diff --git a/test/dax.sh b/test/dax.sh
index d522e79..e35f914 100755
--- a/test/dax.sh
+++ b/test/dax.sh
@@ -44,9 +44,9 @@ fallocate -l 1GiB $MNT/$FILE
 umount $MNT
 
 # convert pmem to put the memmap on the device
-json=$($NDCTL create-namespace -m memory -M dev -f -e $dev)
+json=$($NDCTL create-namespace -m fsdax -M dev -f -e $dev)
 eval $(echo $json | sed -e "$json2var")
-[ $mode != "memory" ] && echo "fail: $LINENO" &&  exit 1
+[ $mode != "fsdax" ] && echo "fail: $LINENO" &&  exit 1
 
 #note the blockdev returned from ndctl create-namespace lacks the /dev prefix
 mkfs.ext4 /dev/$blockdev
@@ -57,7 +57,7 @@ umount $MNT
 
 json=$($NDCTL create-namespace -m raw -f -e $dev)
 eval $(echo $json | sed -e "$json2var")
-[ $mode != "memory" ] && echo "fail: $LINENO" &&  exit 1
+[ $mode != "fsdax" ] && echo "fail: $LINENO" &&  exit 1
 
 mkfs.xfs -f /dev/$blockdev
 mount /dev/$blockdev $MNT -o dax
@@ -66,9 +66,9 @@ fallocate -l 1GiB $MNT/$FILE
 umount $MNT
 
 # convert pmem to put the memmap on the device
-json=$($NDCTL create-namespace -m memory -M dev -f -e $dev)
+json=$($NDCTL create-namespace -m fsdax -M dev -f -e $dev)
 eval $(echo $json | sed -e "$json2var")
-[ $mode != "memory" ] && echo "fail: $LINENO" &&  exit 1
+[ $mode != "fsdax" ] && echo "fail: $LINENO" &&  exit 1
 
 mkfs.xfs -f /dev/$blockdev
 mount /dev/$blockdev $MNT -o dax
@@ -79,6 +79,6 @@ umount $MNT
 # revert namespace to raw mode
 json=$($NDCTL create-namespace -m raw -f -e $dev)
 eval $(echo $json | sed -e "$json2var")
-[ $mode != "memory" ] && echo "fail: $LINENO" &&  exit 1
+[ $mode != "fsdax" ] && echo "fail: $LINENO" &&  exit 1
 
 exit 0
diff --git a/test/daxdev-errors.sh b/test/daxdev-errors.sh
index cf6adc6..0c8acf5 100755
--- a/test/daxdev-errors.sh
+++ b/test/daxdev-errors.sh
@@ -49,12 +49,12 @@ rc=1
 query=". | sort_by(.available_size) | reverse | .[0].dev"
 region=$($NDCTL list $BUS -t pmem -Ri | jq -r "$query")
 
-json=$($NDCTL create-namespace $BUS -r $region -t pmem -m dax -a 4096)
-chardev=$(echo $json | jq ". | select(.mode == \"dax\") | .daxregion.devices[0].chardev")
+json=$($NDCTL create-namespace $BUS -r $region -t pmem -m devdax -a 4096)
+chardev=$(echo $json | jq ". | select(.mode == \"devdax\") | .daxregion.devices[0].chardev")
 
 #{
 #  "dev":"namespace6.0",
-#  "mode":"dax",
+#  "mode":"devdax",
 #  "size":64004096,
 #  "uuid":"83a925dd-42b5-4ac6-8588-6a50bfc0c001",
 #  "daxregion":{
@@ -70,7 +70,7 @@ chardev=$(echo $json | jq ". | select(.mode == \"dax\") | .daxregion.devices[0].
 #  }
 #}
 
-json1=$($NDCTL list $BUS --mode=dax --namespaces)
+json1=$($NDCTL list $BUS --mode=devdax --namespaces)
 eval $(echo $json1 | sed -e "$json2var")
 nsdev=$dev
 
diff --git a/test/device-dax-fio.sh b/test/device-dax-fio.sh
index f2cbd4d..6214030 100755
--- a/test/device-dax-fio.sh
+++ b/test/device-dax-fio.sh
@@ -43,8 +43,8 @@ fi
 dev=$(./dax-dev)
 for align in 4k 2m 1g
 do
-	json=$($NDCTL create-namespace -m dax -a $align -f -e $dev)
-	chardev=$(echo $json | jq -r ". | select(.mode == \"dax\") | .daxregion.devices[0].chardev")
+	json=$($NDCTL create-namespace -m devdax -a $align -f -e $dev)
+	chardev=$(echo $json | jq -r ". | select(.mode == \"devdax\") | .daxregion.devices[0].chardev")
 	if [ align = "1g" ]; then
 		bs="1g"
 	else
@@ -80,7 +80,7 @@ do
 	# revert namespace to raw mode
 	json=$($NDCTL create-namespace -m raw -f -e $dev)
 	mode=$(echo $json | jq -r ".mode")
-	[ $mode != "memory" ] && echo "fail: $LINENO" && exit 1
+	[ $mode != "fsdax" ] && echo "fail: $LINENO" && exit 1
 done
 
 exit 0
diff --git a/test/device-dax.c b/test/device-dax.c
index d9196a7..0a42a32 100644
--- a/test/device-dax.c
+++ b/test/device-dax.c
@@ -58,7 +58,7 @@ static int setup_device_dax(struct ndctl_namespace *ndns, unsigned long __align)
 	struct ndctl_ctx *ctx = ndctl_namespace_get_ctx(ndns);
 	char align[32];
 	const char *argv[] = {
-		"__func__", "-v", "-m", "dax", "-M", "dev", "-f", "-a", align,
+		"__func__", "-v", "-m", "devdax", "-M", "dev", "-f", "-a", align,
 		"-e", "",
 	};
 	int argc = ARRAY_SIZE(argv);
@@ -68,13 +68,13 @@ static int setup_device_dax(struct ndctl_namespace *ndns, unsigned long __align)
 	return create_namespace(argc, argv, ctx);
 }
 
-static int setup_pmem_memory_mode(struct ndctl_namespace *ndns,
+static int setup_pmem_fsdax_mode(struct ndctl_namespace *ndns,
 		unsigned long __align)
 {
 	struct ndctl_ctx *ctx = ndctl_namespace_get_ctx(ndns);
 	char align[32];
 	const char *argv[] = {
-		"__func__", "-v", "-m", "memory", "-M", "dev", "-f", "-a",
+		"__func__", "-v", "-m", "fsdax", "-M", "dev", "-f", "-a",
 		align, "-e", "",
 	};
 	int argc = ARRAY_SIZE(argv);
@@ -175,8 +175,8 @@ static int __test_device_dax(unsigned long align, int loglevel,
 	if (!ndctl_test_attempt(test, KERNEL_VERSION(4, 7, 0)))
 		return 77;
 
-	/* setup up memory mode pmem device and seed with verification data */
-	rc = setup_pmem_memory_mode(ndns, align);
+	/* setup up fsdax mode pmem device and seed with verification data */
+	rc = setup_pmem_fsdax_mode(ndns, align);
 	if (rc < 0 || !(pfn = ndctl_namespace_get_pfn(ndns))) {
 		fprintf(stderr, "%s: failed device-dax setup\n",
 				ndctl_namespace_get_devname(ndns));
diff --git a/test/inject-error.sh b/test/inject-error.sh
index 976be5e..8630745 100755
--- a/test/inject-error.sh
+++ b/test/inject-error.sh
@@ -28,7 +28,7 @@ trap 'err $LINENO' ERR
 # sample json:
 #{
 #  "dev":"namespace7.0",
-#  "mode":"memory",
+#  "mode":"fsdax",
 #  "size":"60.00 MiB (62.92 MB)",
 #  "uuid":"f1baa71a-d165-4da4-bb6a-083a2b0e6469",
 #  "blockdev":"pmem7",
diff --git a/test/libndctl.c b/test/libndctl.c
index a66bcb7..af28390 100644
--- a/test/libndctl.c
+++ b/test/libndctl.c
@@ -878,7 +878,7 @@ static int __check_pfn_create(struct ndctl_region *region,
 
 	mode = ndctl_namespace_get_mode(ndns);
 	if (mode >= 0 && mode != NDCTL_NS_MODE_MEMORY)
-		fprintf(stderr, "%s: expected memory mode got: %d\n",
+		fprintf(stderr, "%s: expected fsdax mode got: %d\n",
 				devname, mode);
 
 	if (namespace->ro == (rc == 0)) {
diff --git a/test/multi-dax.sh b/test/multi-dax.sh
index bcc9bdf..59ec6d6 100755
--- a/test/multi-dax.sh
+++ b/test/multi-dax.sh
@@ -48,10 +48,10 @@ rc=1
 query=". | sort_by(.available_size) | reverse | .[0].dev"
 region=$($NDCTL list $BUS -t pmem -Ri | jq -r "$query")
 
-json=$($NDCTL create-namespace $BUS -r $region -t pmem -m dax -a 4096 -s 16M)
-chardev1=$(echo $json | jq ". | select(.mode == \"dax\") | .daxregion.devices[0].chardev")
-json=$($NDCTL create-namespace $BUS -r $region -t pmem -m dax -a 4096 -s 16M)
-chardev2=$(echo $json | jq ". | select(.mode == \"dax\") | .daxregion.devices[0].chardev")
+json=$($NDCTL create-namespace $BUS -r $region -t pmem -m devdax -a 4096 -s 16M)
+chardev1=$(echo $json | jq ". | select(.mode == \"devdax\") | .daxregion.devices[0].chardev")
+json=$($NDCTL create-namespace $BUS -r $region -t pmem -m devdax -a 4096 -s 16M)
+chardev2=$(echo $json | jq ". | select(.mode == \"devdax\") | .daxregion.devices[0].chardev")
 
 # cleanup
 $NDCTL disable-region $BUS all
diff --git a/test/rescan-partitions.sh b/test/rescan-partitions.sh
index 47f0b62..be26c14 100755
--- a/test/rescan-partitions.sh
+++ b/test/rescan-partitions.sh
@@ -100,7 +100,7 @@ test_mode()
 rc=1
 reset
 test_mode "raw"
-test_mode "memory"
+test_mode "fsdax"
 test_mode "sector"
 
 exit 0
diff --git a/util/json.c b/util/json.c
index 5b4b4c3..8d65525 100644
--- a/util/json.c
+++ b/util/json.c
@@ -685,19 +685,13 @@ struct json_object *util_namespace_to_json(struct ndctl_namespace *ndns,
 			size = ndctl_pfn_get_size(pfn);
 		else /* native/static memory mode */
 			size = ndctl_namespace_get_size(ndns);
-		if (flags & UTIL_JSON_HUMAN)
-			jobj = json_object_new_string("fsdax");
-		else
-			jobj = json_object_new_string("memory");
+		jobj = json_object_new_string("fsdax");
 		break;
 	case NDCTL_NS_MODE_DAX:
 		if (!dax)
 			goto err;
 		size = ndctl_dax_get_size(dax);
-		if (flags & UTIL_JSON_HUMAN)
-			jobj = json_object_new_string("devdax");
-		else
-			jobj = json_object_new_string("dax");
+		jobj = json_object_new_string("devdax");
 		break;
 	case NDCTL_NS_MODE_SAFE:
 		if (!btt)
-- 
2.14.3

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Re: [ndctl PATCH v3] ndctl: complete move to "fsdax" and "devdax"

[Dan Williams]

On Thu, Apr 12, 2018 at 1:28 PM, Ross Zwisler
<ross.zwisler@linux.intel.com> wrote:
> Add on to the work started by:
>
> commit ebb4fb605e68 ("ndctl, create-namespace: introduce "fsdax" and "devdax" modes")
>
> and change some more user visible places to use "fsdax" and "devdax" modes
> instead of "memory" and "dax", respectively.  Having multiple terms for the
> same mode is confusing for users.
>
> We will continue to accept "memory" and "dax" as parameters, but all output
> and man pages will now use the updated terms.
>
> Note that after the above referenced commit we still printed the old names
> in the default 'ndctl list' output for backward compatibility with scripts.
> This patch intentionally breaks that backward compatibility in favor of
> avoiding confusion and using the new mode names everywhere.
>
> Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>

Reviewed-by: Dan Williams <dan.j.williams@intel.com>
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Re: [ndctl PATCH v3] ndctl: complete move to "fsdax" and "devdax"

[Verma, Vishal L]

On Thu, 2018-04-12 at 14:28 -0600, Ross Zwisler wrote:
> Add on to the work started by:
> 
> commit ebb4fb605e68 ("ndctl, create-namespace: introduce "fsdax" and
> "devdax" modes")
> 
> and change some more user visible places to use "fsdax" and "devdax"
> modes
> instead of "memory" and "dax", respectively.  Having multiple terms for
> the
> same mode is confusing for users.
> 
> We will continue to accept "memory" and "dax" as parameters, but all
> output
> and man pages will now use the updated terms.
> 
> Note that after the above referenced commit we still printed the old
> names
> in the default 'ndctl list' output for backward compatibility with
> scripts.
> This patch intentionally breaks that backward compatibility in favor of
> avoiding confusion and using the new mode names everywhere.
> 
> Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
> ---
> 
> Changes since v2:
>  - Update files in the 'test' directory as well. (Vishal)
> 
> I've executed all the ndctl unit tests in an nfit_test setup and made
> sure everything still passes.
> 

Thanks for the update; Applied.

> ---
>  Documentation/ndctl/ndctl-inject-error.txt |  2 +-
>  Documentation/ndctl/ndctl-list.txt         |  6 +++---
>  ndctl/namespace.c                          | 16 ++++++++--------
>  test/btt-pad-compat.sh                     |  2 +-
>  test/clear.sh                              |  6 +++---
>  test/create.sh                             |  6 +++---
>  test/dax.sh                                | 12 ++++++------
>  test/daxdev-errors.sh                      |  8 ++++----
>  test/device-dax-fio.sh                     |  6 +++---
>  test/device-dax.c                          | 10 +++++-----
>  test/inject-error.sh                       |  2 +-
>  test/libndctl.c                            |  2 +-
>  test/multi-dax.sh                          |  8 ++++----
>  test/rescan-partitions.sh                  |  2 +-
>  util/json.c                                | 10 ++--------
>  15 files changed, 46 insertions(+), 52 deletions(-)
> 
> diff --git a/Documentation/ndctl/ndctl-inject-error.txt
> b/Documentation/ndctl/ndctl-inject-error.txt
> index 01f6c22..94c4e69 100644
> --- a/Documentation/ndctl/ndctl-inject-error.txt
> +++ b/Documentation/ndctl/ndctl-inject-error.txt
> @@ -45,7 +45,7 @@ OPTIONS
>  
>  	NOTE: The offset is interpreted in different ways based on the
> "mode"
>  	of the namespace. For "raw" mode, the offset is the base
> namespace
> -	offset. For "memory" mode (i.e. a "pfn" namespace), the offset
> is
> +	offset. For "fsdax" mode (i.e. a "pfn" namespace), the offset is
>  	relative to the user-visible part of the namespace, and the
> offset
>  	introduced by the kernel's metadata will be accounted for. For a
>  	"sector" mode namespace (i.e. a "BTT" namespace), the offset is
> diff --git a/Documentation/ndctl/ndctl-list.txt
> b/Documentation/ndctl/ndctl-list.txt
> index 04affc4..2abc572 100644
> --- a/Documentation/ndctl/ndctl-list.txt
> +++ b/Documentation/ndctl/ndctl-list.txt
> @@ -49,7 +49,7 @@ EXAMPLE
>    "namespaces":[
>      {
>        "dev":"namespace0.0",
> -      "mode":"memory",
> +      "mode":"fsdax",
>        "size":8589934592,
>        "blockdev":"pmem0"
>      }
> @@ -132,11 +132,11 @@ include::xable-region-options.txt[]
>  -X::
>  --device-dax::
>  	Include device-dax ("daxregion") details when a namespace is in
> -	"dax" mode.
> +	"devdax" mode.
>  [verse]
>  {
>    "dev":"namespace0.0",
> -  "mode":"dax",
> +  "mode":"devdax",
>    "size":4225761280,
>    "uuid":"18ae1bbb-bb62-4efc-86df-4a5caacb5dcc",
>    "daxregion":{
> diff --git a/ndctl/namespace.c b/ndctl/namespace.c
> index f2c5644..fe86d82 100644
> --- a/ndctl/namespace.c
> +++ b/ndctl/namespace.c
> @@ -103,7 +103,7 @@ OPT_STRING('n', "name", &param.name, "name", \
>  OPT_STRING('s', "size", &param.size, "size", \
>  	"specify the namespace size in bytes (default: available
> capacity)"), \
>  OPT_STRING('m', "mode", &param.mode, "operation-mode", \
> -	"specify a mode for the namespace, 'sector', 'memory', or
> 'raw'"), \
> +	"specify a mode for the namespace, 'sector', 'fsdax', 'devdax'
> or 'raw'"), \
>  OPT_STRING('M', "map", &param.map, "memmap-location", \
>  	"specify 'mem' or 'dev' for the location of the memmap"), \
>  OPT_STRING('l', "sector-size", &param.sector_size, "lba-size", \
> @@ -533,7 +533,7 @@ static int validate_namespace_options(struct
> ndctl_region *region,
>  			 * supported a 2M default alignment when
>  			 * ndctl_pfn_has_align() returns false.
>  			 */
> -			debug("%s not support 'align' for memory
> mode\n",
> +			debug("%s not support 'align' for fsdax mode\n",
>  					region_name);
>  			return -EAGAIN;
>  		} else if (p->mode == NDCTL_NS_MODE_DAX
> @@ -542,7 +542,7 @@ static int validate_namespace_options(struct
> ndctl_region *region,
>  			 * Unlike the pfn case, we require the kernel to
>  			 * have 'align' support for device-dax.
>  			 */
> -			debug("%s not support 'align' for dax mode\n",
> +			debug("%s not support 'align' for devdax
> mode\n",
>  					region_name);
>  			return -EAGAIN;
>  		} else if (!param.align_default
> @@ -696,7 +696,7 @@ static int validate_namespace_options(struct
> ndctl_region *region,
>  
>  		if (ndns && p->mode != NDCTL_NS_MODE_MEMORY
>  			&& p->mode != NDCTL_NS_MODE_DAX) {
> -			debug("%s: --map= only valid for memory mode
> namespace\n",
> +			debug("%s: --map= only valid for fsdax mode
> namespace\n",
>  				ndctl_namespace_get_devname(ndns));
>  			return -EINVAL;
>  		}
> @@ -709,10 +709,10 @@ static int validate_namespace_options(struct
> ndctl_region *region,
>  		struct ndctl_pfn *pfn =
> ndctl_region_get_pfn_seed(region);
>  
>  		if (!pfn && param.mode_default) {
> -			debug("%s memory mode not available\n",
> region_name);
> +			debug("%s fsdax mode not available\n",
> region_name);
>  			p->mode = NDCTL_NS_MODE_RAW;
>  		} else if (!pfn) {
> -			error("operation failed, %s memory mode not
> available\n",
> +			error("operation failed, %s fsdax mode not
> available\n",
>  					region_name);
>  			return -EINVAL;
>  		}
> @@ -723,7 +723,7 @@ static int validate_namespace_options(struct
> ndctl_region *region,
>  		struct ndctl_dax *dax =
> ndctl_region_get_dax_seed(region);
>  
>  		if (!dax) {
> -			error("operation failed, %s dax mode not
> available\n",
> +			error("operation failed, %s devdax mode not
> available\n",
>  					region_name);
>  			return -EINVAL;
>  		}
> @@ -759,7 +759,7 @@ static int namespace_create(struct ndctl_region
> *region)
>  		return rc;
>  
>  	if (ndctl_region_get_ro(region)) {
> -		debug("%s: read-only, inelligible for namespace
> creation\n",
> +		debug("%s: read-only, ineligible for namespace
> creation\n",
>  			devname);
>  		return -EAGAIN;
>  	}
> diff --git a/test/btt-pad-compat.sh b/test/btt-pad-compat.sh
> index b2e395d..281a8e5 100755
> --- a/test/btt-pad-compat.sh
> +++ b/test/btt-pad-compat.sh
> @@ -26,7 +26,7 @@ trap 'err $LINENO' ERR
>  # sample json:
>  #{
>  #  "dev":"namespace7.0",
> -#  "mode":"memory",
> +#  "mode":"fsdax",
>  #  "size":"60.00 MiB (62.92 MB)",
>  #  "uuid":"f1baa71a-d165-4da4-bb6a-083a2b0e6469",
>  #  "blockdev":"pmem7",
> diff --git a/test/clear.sh b/test/clear.sh
> index 635e11d..d64dd27 100755
> --- a/test/clear.sh
> +++ b/test/clear.sh
> @@ -69,10 +69,10 @@ fi
>  size_raw=$size
>  sector_raw=$sector
>  
> -# convert pmem to memory mode
> -json=$($NDCTL create-namespace -m memory -f -e $dev)
> +# convert pmem to fsdax mode
> +json=$($NDCTL create-namespace -m fsdax -f -e $dev)
>  eval $(echo $json | sed -e "$json2var")
> -[ $mode != "memory" ] && echo "fail: $LINENO" && exit 1
> +[ $mode != "fsdax" ] && echo "fail: $LINENO" && exit 1
>  
>  # check for errors relative to the offset injected by the pfn device
>  read sector len < /sys/block/$blockdev/badblocks
> diff --git a/test/create.sh b/test/create.sh
> index 4eea78a..3f30d6e 100755
> --- a/test/create.sh
> +++ b/test/create.sh
> @@ -54,10 +54,10 @@ eval $(echo $json | sed -e "$json2var")
>  [ $dev = "x" ] && echo "fail: $LINENO" && exit 1
>  [ $mode != "raw" ] && echo "fail: $LINENO" &&  exit 1
>  
> -# convert pmem to memory mode
> -json=$($NDCTL create-namespace -m memory -f -e $dev)
> +# convert pmem to fsdax mode
> +json=$($NDCTL create-namespace -m fsdax -f -e $dev)
>  eval $(echo $json | sed -e "$json2var")
> -[ $mode != "memory" ] && echo "fail: $LINENO" &&  exit 1
> +[ $mode != "fsdax" ] && echo "fail: $LINENO" &&  exit 1
>  
>  # convert pmem to sector mode
>  json=$($NDCTL create-namespace -m sector -l $SECTOR_SIZE -f -e $dev)
> diff --git a/test/dax.sh b/test/dax.sh
> index d522e79..e35f914 100755
> --- a/test/dax.sh
> +++ b/test/dax.sh
> @@ -44,9 +44,9 @@ fallocate -l 1GiB $MNT/$FILE
>  umount $MNT
>  
>  # convert pmem to put the memmap on the device
> -json=$($NDCTL create-namespace -m memory -M dev -f -e $dev)
> +json=$($NDCTL create-namespace -m fsdax -M dev -f -e $dev)
>  eval $(echo $json | sed -e "$json2var")
> -[ $mode != "memory" ] && echo "fail: $LINENO" &&  exit 1
> +[ $mode != "fsdax" ] && echo "fail: $LINENO" &&  exit 1
>  
>  #note the blockdev returned from ndctl create-namespace lacks the /dev
> prefix
>  mkfs.ext4 /dev/$blockdev
> @@ -57,7 +57,7 @@ umount $MNT
>  
>  json=$($NDCTL create-namespace -m raw -f -e $dev)
>  eval $(echo $json | sed -e "$json2var")
> -[ $mode != "memory" ] && echo "fail: $LINENO" &&  exit 1
> +[ $mode != "fsdax" ] && echo "fail: $LINENO" &&  exit 1
>  
>  mkfs.xfs -f /dev/$blockdev
>  mount /dev/$blockdev $MNT -o dax
> @@ -66,9 +66,9 @@ fallocate -l 1GiB $MNT/$FILE
>  umount $MNT
>  
>  # convert pmem to put the memmap on the device
> -json=$($NDCTL create-namespace -m memory -M dev -f -e $dev)
> +json=$($NDCTL create-namespace -m fsdax -M dev -f -e $dev)
>  eval $(echo $json | sed -e "$json2var")
> -[ $mode != "memory" ] && echo "fail: $LINENO" &&  exit 1
> +[ $mode != "fsdax" ] && echo "fail: $LINENO" &&  exit 1
>  
>  mkfs.xfs -f /dev/$blockdev
>  mount /dev/$blockdev $MNT -o dax
> @@ -79,6 +79,6 @@ umount $MNT
>  # revert namespace to raw mode
>  json=$($NDCTL create-namespace -m raw -f -e $dev)
>  eval $(echo $json | sed -e "$json2var")
> -[ $mode != "memory" ] && echo "fail: $LINENO" &&  exit 1
> +[ $mode != "fsdax" ] && echo "fail: $LINENO" &&  exit 1
>  
>  exit 0
> diff --git a/test/daxdev-errors.sh b/test/daxdev-errors.sh
> index cf6adc6..0c8acf5 100755
> --- a/test/daxdev-errors.sh
> +++ b/test/daxdev-errors.sh
> @@ -49,12 +49,12 @@ rc=1
>  query=". | sort_by(.available_size) | reverse | .[0].dev"
>  region=$($NDCTL list $BUS -t pmem -Ri | jq -r "$query")
>  
> -json=$($NDCTL create-namespace $BUS -r $region -t pmem -m dax -a 4096)
> -chardev=$(echo $json | jq ". | select(.mode == \"dax\") |
> .daxregion.devices[0].chardev")
> +json=$($NDCTL create-namespace $BUS -r $region -t pmem -m devdax -a
> 4096)
> +chardev=$(echo $json | jq ". | select(.mode == \"devdax\") |
> .daxregion.devices[0].chardev")
>  
>  #{
>  #  "dev":"namespace6.0",
> -#  "mode":"dax",
> +#  "mode":"devdax",
>  #  "size":64004096,
>  #  "uuid":"83a925dd-42b5-4ac6-8588-6a50bfc0c001",
>  #  "daxregion":{
> @@ -70,7 +70,7 @@ chardev=$(echo $json | jq ". | select(.mode == \"dax\")
> | .daxregion.devices[0].
>  #  }
>  #}
>  
> -json1=$($NDCTL list $BUS --mode=dax --namespaces)
> +json1=$($NDCTL list $BUS --mode=devdax --namespaces)
>  eval $(echo $json1 | sed -e "$json2var")
>  nsdev=$dev
>  
> diff --git a/test/device-dax-fio.sh b/test/device-dax-fio.sh
> index f2cbd4d..6214030 100755
> --- a/test/device-dax-fio.sh
> +++ b/test/device-dax-fio.sh
> @@ -43,8 +43,8 @@ fi
>  dev=$(./dax-dev)
>  for align in 4k 2m 1g
>  do
> -	json=$($NDCTL create-namespace -m dax -a $align -f -e $dev)
> -	chardev=$(echo $json | jq -r ". | select(.mode == \"dax\") |
> .daxregion.devices[0].chardev")
> +	json=$($NDCTL create-namespace -m devdax -a $align -f -e $dev)
> +	chardev=$(echo $json | jq -r ". | select(.mode == \"devdax\") |
> .daxregion.devices[0].chardev")
>  	if [ align = "1g" ]; then
>  		bs="1g"
>  	else
> @@ -80,7 +80,7 @@ do
>  	# revert namespace to raw mode
>  	json=$($NDCTL create-namespace -m raw -f -e $dev)
>  	mode=$(echo $json | jq -r ".mode")
> -	[ $mode != "memory" ] && echo "fail: $LINENO" && exit 1
> +	[ $mode != "fsdax" ] && echo "fail: $LINENO" && exit 1
>  done
>  
>  exit 0
> diff --git a/test/device-dax.c b/test/device-dax.c
> index d9196a7..0a42a32 100644
> --- a/test/device-dax.c
> +++ b/test/device-dax.c
> @@ -58,7 +58,7 @@ static int setup_device_dax(struct ndctl_namespace
> *ndns, unsigned long __align)
>  	struct ndctl_ctx *ctx = ndctl_namespace_get_ctx(ndns);
>  	char align[32];
>  	const char *argv[] = {
> -		"__func__", "-v", "-m", "dax", "-M", "dev", "-f", "-a",
> align,
> +		"__func__", "-v", "-m", "devdax", "-M", "dev", "-f", "-
> a", align,
>  		"-e", "",
>  	};
>  	int argc = ARRAY_SIZE(argv);
> @@ -68,13 +68,13 @@ static int setup_device_dax(struct ndctl_namespace
> *ndns, unsigned long __align)
>  	return create_namespace(argc, argv, ctx);
>  }
>  
> -static int setup_pmem_memory_mode(struct ndctl_namespace *ndns,
> +static int setup_pmem_fsdax_mode(struct ndctl_namespace *ndns,
>  		unsigned long __align)
>  {
>  	struct ndctl_ctx *ctx = ndctl_namespace_get_ctx(ndns);
>  	char align[32];
>  	const char *argv[] = {
> -		"__func__", "-v", "-m", "memory", "-M", "dev", "-f", "-
> a",
> +		"__func__", "-v", "-m", "fsdax", "-M", "dev", "-f", "-
> a",
>  		align, "-e", "",
>  	};
>  	int argc = ARRAY_SIZE(argv);
> @@ -175,8 +175,8 @@ static int __test_device_dax(unsigned long align, int
> loglevel,
>  	if (!ndctl_test_attempt(test, KERNEL_VERSION(4, 7, 0)))
>  		return 77;
>  
> -	/* setup up memory mode pmem device and seed with verification
> data */
> -	rc = setup_pmem_memory_mode(ndns, align);
> +	/* setup up fsdax mode pmem device and seed with verification
> data */
> +	rc = setup_pmem_fsdax_mode(ndns, align);
>  	if (rc < 0 || !(pfn = ndctl_namespace_get_pfn(ndns))) {
>  		fprintf(stderr, "%s: failed device-dax setup\n",
>  				ndctl_namespace_get_devname(ndns));
> diff --git a/test/inject-error.sh b/test/inject-error.sh
> index 976be5e..8630745 100755
> --- a/test/inject-error.sh
> +++ b/test/inject-error.sh
> @@ -28,7 +28,7 @@ trap 'err $LINENO' ERR
>  # sample json:
>  #{
>  #  "dev":"namespace7.0",
> -#  "mode":"memory",
> +#  "mode":"fsdax",
>  #  "size":"60.00 MiB (62.92 MB)",
>  #  "uuid":"f1baa71a-d165-4da4-bb6a-083a2b0e6469",
>  #  "blockdev":"pmem7",
> diff --git a/test/libndctl.c b/test/libndctl.c
> index a66bcb7..af28390 100644
> --- a/test/libndctl.c
> +++ b/test/libndctl.c
> @@ -878,7 +878,7 @@ static int __check_pfn_create(struct ndctl_region
> *region,
>  
>  	mode = ndctl_namespace_get_mode(ndns);
>  	if (mode >= 0 && mode != NDCTL_NS_MODE_MEMORY)
> -		fprintf(stderr, "%s: expected memory mode got: %d\n",
> +		fprintf(stderr, "%s: expected fsdax mode got: %d\n",
>  				devname, mode);
>  
>  	if (namespace->ro == (rc == 0)) {
> diff --git a/test/multi-dax.sh b/test/multi-dax.sh
> index bcc9bdf..59ec6d6 100755
> --- a/test/multi-dax.sh
> +++ b/test/multi-dax.sh
> @@ -48,10 +48,10 @@ rc=1
>  query=". | sort_by(.available_size) | reverse | .[0].dev"
>  region=$($NDCTL list $BUS -t pmem -Ri | jq -r "$query")
>  
> -json=$($NDCTL create-namespace $BUS -r $region -t pmem -m dax -a 4096 -s
> 16M)
> -chardev1=$(echo $json | jq ". | select(.mode == \"dax\") |
> .daxregion.devices[0].chardev")
> -json=$($NDCTL create-namespace $BUS -r $region -t pmem -m dax -a 4096 -s
> 16M)
> -chardev2=$(echo $json | jq ". | select(.mode == \"dax\") |
> .daxregion.devices[0].chardev")
> +json=$($NDCTL create-namespace $BUS -r $region -t pmem -m devdax -a 4096
> -s 16M)
> +chardev1=$(echo $json | jq ". | select(.mode == \"devdax\") |
> .daxregion.devices[0].chardev")
> +json=$($NDCTL create-namespace $BUS -r $region -t pmem -m devdax -a 4096
> -s 16M)
> +chardev2=$(echo $json | jq ". | select(.mode == \"devdax\") |
> .daxregion.devices[0].chardev")
>  
>  # cleanup
>  $NDCTL disable-region $BUS all
> diff --git a/test/rescan-partitions.sh b/test/rescan-partitions.sh
> index 47f0b62..be26c14 100755
> --- a/test/rescan-partitions.sh
> +++ b/test/rescan-partitions.sh
> @@ -100,7 +100,7 @@ test_mode()
>  rc=1
>  reset
>  test_mode "raw"
> -test_mode "memory"
> +test_mode "fsdax"
>  test_mode "sector"
>  
>  exit 0
> diff --git a/util/json.c b/util/json.c
> index 5b4b4c3..8d65525 100644
> --- a/util/json.c
> +++ b/util/json.c
> @@ -685,19 +685,13 @@ struct json_object *util_namespace_to_json(struct
> ndctl_namespace *ndns,
>  			size = ndctl_pfn_get_size(pfn);
>  		else /* native/static memory mode */
>  			size = ndctl_namespace_get_size(ndns);
> -		if (flags & UTIL_JSON_HUMAN)
> -			jobj = json_object_new_string("fsdax");
> -		else
> -			jobj = json_object_new_string("memory");
> +		jobj = json_object_new_string("fsdax");
>  		break;
>  	case NDCTL_NS_MODE_DAX:
>  		if (!dax)
>  			goto err;
>  		size = ndctl_dax_get_size(dax);
> -		if (flags & UTIL_JSON_HUMAN)
> -			jobj = json_object_new_string("devdax");
> -		else
> -			jobj = json_object_new_string("dax");
> +		jobj = json_object_new_string("devdax");
>  		break;
>  	case NDCTL_NS_MODE_SAFE:
>  		if (!btt)
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