[PATCH] Detail: differentiate between container and inactive arrays

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Containers used to be handled as active arrays because GET_ARRAY_INFO 
ioctl returns valid structure for them. As containers appear as inactive 
in sysfs, the output for detail command has changed.

Stop relying on inactive state for containers. Make the output look the 
same as in mdadm 4.0.

Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@xxxxxxxxx>
---
 Detail.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/Detail.c b/Detail.c
index 2c9fb24..4dcf81d 100644
--- a/Detail.c
+++ b/Detail.c
@@ -80,6 +80,7 @@ int Detail(char *dev, struct context *c)
 	char *avail = NULL;
 	int external;
 	int inactive;
+	int is_container = 0;
 
 	if (fd < 0) {
 		pr_err("cannot open %s: %s\n",
@@ -119,6 +120,8 @@ int Detail(char *dev, struct context *c)
 		}
 	}
 
+	if (array.raid_disks == 0 && external)
+		is_container = 1;
 	if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
 		stb.st_rdev = 0;
 	rv = 0;
@@ -228,7 +231,7 @@ int Detail(char *dev, struct context *c)
 				printf("MD_LEVEL=%s\n", str);
 			printf("MD_DEVICES=%d\n", array.raid_disks);
 		} else {
-			if (!inactive)
+			if (is_container)
 				printf("MD_LEVEL=container\n");
 			printf("MD_DEVICES=%d\n", array.nr_disks);
 		}
@@ -357,13 +360,16 @@ int Detail(char *dev, struct context *c)
 
 	if (c->brief) {
 		mdu_bitmap_file_t bmf;
-		printf("%sARRAY %s", inactive ? "INACTIVE-":"", dev);
+		if (inactive && !is_container)
+			printf("INACTIVE-ARRAY %s", dev);
+		else
+			printf("ARRAY %s", dev);
 		if (c->verbose > 0) {
 			if (array.raid_disks)
 				printf(" level=%s num-devices=%d",
 				       str ? str : "-unknown-",
 				       array.raid_disks);
-			else if (!inactive)
+			else if (is_container)
 				printf(" level=container num-devices=%d",
 				       array.nr_disks);
 			else
@@ -416,7 +422,7 @@ int Detail(char *dev, struct context *c)
 		atime = array.ctime;
 		if (atime)
 			printf("     Creation Time : %.24s\n", ctime(&atime));
-		if (array.raid_disks == 0 && external)
+		if (is_container)
 			str = "container";
 		if (str)
 			printf("        Raid Level : %s\n", str);
@@ -489,7 +495,7 @@ int Detail(char *dev, struct context *c)
 			       " (DELAYED)": "",
 			       (e && e->percent == RESYNC_PENDING) ?
 			       " (PENDING)": "");
-		} else if (inactive) {
+		} else if (inactive && !is_container) {
 			printf("             State : inactive\n");
 		}
 		if (array.raid_disks)
-- 
1.8.3.1

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