Examine/super1 - report Unused space, before and after.

Might be confusing, or might be useful when reshaping.

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

diff --git a/super1.c b/super1.c
index e54cd544e416cebdcc22bc5bcaa01134a94ad42f..b73d3ab95f9def22cf5ac6176ee8badeb5324945 100644 (file)
--- a/super1.c
+++ b/super1.c
@@ -269,6 +269,7 @@ static void examine_super1(struct supertype *st, char *homehost)
        int l = homehost ? strlen(homehost) : 0;
        int layout;
        unsigned long long sb_offset;
+       struct mdinfo info;
 
        printf("          Magic : %08x\n", __le32_to_cpu(sb->magic));
        printf("        Version : 1");
@@ -337,6 +338,13 @@ static void examine_super1(struct supertype *st, char *homehost)
               (unsigned long long)__le64_to_cpu(sb->super_offset));
        if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_RECOVERY_OFFSET)
                printf("Recovery Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb->recovery_offset));
+
+       st->ss->getinfo_super(st, &info, NULL);
+       if (info.space_after != 1 &&
+           !(__le32_to_cpu(sb->feature_map) & MD_FEATURE_NEW_OFFSET))
+               printf("   Unused Space : before=%llu sectors, after=%llu sectors\n",
+                      info.space_before, info.space_after);
+
        printf("          State : %s\n", (__le64_to_cpu(sb->resync_offset)+1)? "active":"clean");
        printf("    Device UUID : ");
        for (i=0; i<16; i++) {