From fbf8a0b7a6f107c0fcecb6fea5640ffb1bc0d9c2 Mon Sep 17 00:00:00 2001
From: Neil Brown <neilb@suse.de>
Date: Mon, 18 Jul 2005 01:30:42 +0000
Subject: [PATCH] Document this...

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
---
 Assemble.c | 13 ++++++++++++-
 Query.c    | 33 +++++++++++++++++++--------------
 mdadm.h    |  2 +-
 super0.c   |  1 +
 super1.c   |  4 ++--
 5 files changed, 35 insertions(+), 18 deletions(-)

diff --git a/Assemble.c b/Assemble.c
index 5bf58ab1..89086e38 100644
--- a/Assemble.c
+++ b/Assemble.c
@@ -473,6 +473,7 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
 		if (!devices[j].uptodate)
 			continue;
 		info.disk.number = i;
+		info.disk.raid_disk = i;
 		info.disk.state = desired_state;
 
 		if (devices[j].uptodate &&
@@ -526,7 +527,17 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
 
 	/* Almost ready to actually *do* something */
 	if (!old_linux) {
-		if (ioctl(mdfd, SET_ARRAY_INFO, NULL) != 0) {
+		int rv;
+		if ((vers % 100) >= 1) { /* can use different versions */
+			mdu_array_info_t inf;
+			memset(&inf, 0, sizeof(inf));
+			inf.major_version = st->ss->major;
+			inf.minor_version = st->minor_version;
+			rv = ioctl(mdfd, SET_ARRAY_INFO, &inf);
+		} else 
+			rv = ioctl(mdfd, SET_ARRAY_INFO, NULL);
+
+		if (rv) {
 			fprintf(stderr, Name ": SET_ARRAY_INFO failed for %s: %s\n",
 				mddev, strerror(errno));
 			return 1;
diff --git a/Query.c b/Query.c
index 4c2c7bff..d2bfb052 100644
--- a/Query.c
+++ b/Query.c
@@ -105,26 +105,31 @@ int Query(char *dev)
 	if (superror == 0) {
 		/* array might be active... */
 		st->ss->getinfo_super(&info, super);
-		mddev = get_md_name(info.array.md_minor);
-		disc.number = info.disk.number;
-		activity = "undetected";
-		if (mddev && (fd = open(mddev, O_RDONLY))>=0) {
-			if (md_get_version(fd) >= 9000 &&	
-			    ioctl(fd, GET_ARRAY_INFO, &array)>= 0) {
-				if (ioctl(fd, GET_DISK_INFO, &disc) >= 0 &&
-				    makedev((unsigned)disc.major,(unsigned)disc.minor) == stb.st_rdev)
-					activity = "active";
-				else
-					activity = "mismatch";
+		if (st->ss->major == 0) {
+			mddev = get_md_name(info.array.md_minor);
+			disc.number = info.disk.number;
+			activity = "undetected";
+			if (mddev && (fd = open(mddev, O_RDONLY))>=0) {
+				if (md_get_version(fd) >= 9000 &&	
+				    ioctl(fd, GET_ARRAY_INFO, &array)>= 0) {
+					if (ioctl(fd, GET_DISK_INFO, &disc) >= 0 &&
+					    makedev((unsigned)disc.major,(unsigned)disc.minor) == stb.st_rdev)
+						activity = "active";
+					else
+						activity = "mismatch";
+				}
+				close(fd);
 			}
-			close(fd);
+		} else {
+			activity = "unknown";
+			mddev = "array";
 		}
-		printf("%s: device %d in %d device %s %s md%d.  Use mdadm --examine for more detail.\n",
+		printf("%s: device %d in %d device %s %s %s.  Use mdadm --examine for more detail.\n",
 		       dev, 
 		       info.disk.number, info.array.raid_disks,
 		       activity,
 		       map_num(pers, info.array.level),
-		       info.array.md_minor);
+		       mddev);
 	}
 	return 0;
 }
diff --git a/mdadm.h b/mdadm.h
index 1451c33c..ac3feb13 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -73,7 +73,7 @@ struct mdinfo {
 	mdu_array_info_t	array;
 	mdu_disk_info_t		disk;
 	__u64			events;
-	unsigned int		uuid[4];
+	int			uuid[4];
 };
 
 #define Name "mdadm"
diff --git a/super0.c b/super0.c
index ada598aa..7e1b58d9 100644
--- a/super0.c
+++ b/super0.c
@@ -205,6 +205,7 @@ static void getinfo_super0(struct mdinfo *info, void *sbv)
 	info->disk.major = sb->this_disk.major;
 	info->disk.minor = sb->this_disk.minor;
 	info->disk.raid_disk = sb->this_disk.raid_disk;
+	info->disk.number = sb->this_disk.number;
 
 	info->events = md_event(sb);
 
diff --git a/super1.c b/super1.c
index 31cf9a37..6bd5ceca 100644
--- a/super1.c
+++ b/super1.c
@@ -278,7 +278,7 @@ static void getinfo_super1(struct mdinfo *info, void *sbv)
 
 	info->disk.major = 0;
 	info->disk.minor = 0;
-
+	info->disk.number = __le32_to_cpu(sb->dev_number);
 	if (__le32_to_cpu(sb->dev_number) >= __le32_to_cpu(sb->max_dev) ||
 	    __le32_to_cpu(sb->max_dev) > 512)
 		role = 0xfffe;
@@ -303,7 +303,7 @@ static void getinfo_super1(struct mdinfo *info, void *sbv)
 
 	for (i=0; i< __le32_to_cpu(sb->max_dev); i++) {
 		role = __le16_to_cpu(sb->dev_roles[i]);
-		if (role == 0xFFFF || role < info->array.raid_disks)
+		if (/*role == 0xFFFF || */role < info->array.raid_disks)
 			working++;
 	}
 
-- 
2.39.2