Include homehost information in --detail where appropriate.

Signed-off-by: Neil Brown <neilb@suse.de>

5 files changed, 23 insertions, 11 deletions

diff --git a/Detail.c b/Detail.c
index c377f29..832e0d8 100644
--- a/Detail.c
+++ b/Detail.c
@@ -31,7 +31,7 @@
 #include	"md_p.h"
 #include	"md_u.h"
 
-int Detail(char *dev, int brief, int test)
+int Detail(char *dev, int brief, int test, char *homehost)
 {
 	/*
 	 * Print out details for an md array by using
@@ -268,7 +268,7 @@ This is pretty boring
 		} else if (e && e->percent >= 0)
 			printf("\n");
 		if (super && st)
-			st->ss->detail_super(super);
+			st->ss->detail_super(super, homehost);
 
 		printf("    Number   Major   Minor   RaidDevice State\n");
 	}
diff --git a/mdadm.c b/mdadm.c
index d123e49..de0a503 100644
--- a/mdadm.c
+++ b/mdadm.c
@@ -1069,7 +1069,7 @@ int main(int argc, char *argv[])
 								e->dev);
 							continue;
 						}
-						rv |= Detail(name, verbose>1?0:verbose+1, test);
+						rv |= Detail(name, verbose>1?0:verbose+1, test, homehost);
 						put_md_name(name);
 					}
 				} else	if (devmode == 'S' && scan) {
@@ -1114,7 +1114,7 @@ int main(int argc, char *argv[])
 			for (dv=devlist ; dv; dv=dv->next) {
 				switch(dv->disposition) {
 				case 'D':
-					rv |= Detail(dv->devname, brief?1+verbose:0, test); continue;
+					rv |= Detail(dv->devname, brief?1+verbose:0, test, homehost); continue;
 				case 'K': /* Zero superblock */
 					rv |= Kill(dv->devname, force, quiet); continue;
 				case 'Q':
diff --git a/mdadm.h b/mdadm.h
index 7bfd8cb..2a2529f 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -274,7 +274,7 @@ extern char *map_dev(int major, int minor, int create);
 extern struct superswitch {
 	void (*examine_super)(void *sbv);
 	void (*brief_examine_super)(void *sbv);
-	void (*detail_super)(void *sbv);
+	void (*detail_super)(void *sbv, char *homehost);
 	void (*brief_detail_super)(void *sbv);
 	void (*uuid_from_super)(int uuid[4], void *sbv);
 	void (*getinfo_super)(struct mdinfo *info, void *sbv);
@@ -358,7 +358,7 @@ extern int Create(struct supertype *st, char *mddev, int mdfd,
 		  int runstop, int verbose, int force, int assume_clean,
 		  char *bitmap_file, int bitmap_chunk, int write_behind, int delay);
 
-extern int Detail(char *dev, int brief, int test);
+extern int Detail(char *dev, int brief, int test, char *homehost);
 extern int Query(char *dev);
 extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust,
 		   struct supertype *forcest);
diff --git a/super0.c b/super0.c
index 7fe2336..d1fbfae 100644
--- a/super0.c
+++ b/super0.c
@@ -231,7 +231,7 @@ static void brief_examine_super0(void *sbv)
 	printf("\n");
 }
 
-static void detail_super0(void *sbv)
+static void detail_super0(void *sbv, char *homehost)
 {
 	mdp_super_t *sb = sbv;
 	printf("           UUID : ");
@@ -240,6 +240,13 @@ static void detail_super0(void *sbv)
 		       sb->set_uuid2, sb->set_uuid3);
 	else
 		printf("%08x", sb->set_uuid0);
+	if (homehost) {
+		unsigned char *hash = SHA1((unsigned char *)homehost,
+					   strlen(homehost),
+					   NULL);
+		if (memcmp(&sb->set_uuid2, hash, 8)==0)
+			printf(" (local to host %s)", homehost);
+	}
 	printf("\n         Events : %d.%d\n\n", sb->events_hi, sb->events_lo);
 }
 
diff --git a/super1.c b/super1.c
index a29795a..77118d4 100644
--- a/super1.c
+++ b/super1.c
@@ -317,13 +317,18 @@ static void brief_examine_super1(void *sbv)
 	printf("\n");
 }
 
-static void detail_super1(void *sbv)
+static void detail_super1(void *sbv, char *homehost)
 {
 	struct mdp_superblock_1 *sb = sbv;
 	int i;
-
-	printf("           Name : %.32s\n", sb->set_name);
-	printf("           UUID : ");
+	int l = homehost ? strlen(homehost) : 0;
+
+	printf("           Name : %.32s", sb->set_name);
+	if (l > 0 && l < 32 &&
+	    sb->set_name[l] == ':' &&
+	    strncmp(sb->set_name, homehost, l) == 0)
+		printf("  (local to host %s)", homehost);
+	printf("\n           UUID : ");
 	for (i=0; i<16; i++) {
 		if ((i&3)==0 && i != 0) printf(":");
 		printf("%02x", sb->set_uuid[i]);