From: Maciej Naruszewicz <maciej.naruszewicz@intel.com>
Date: Tue, 2 Oct 2012 06:42:25 +0000 (+1000)
Subject: Add MD_ARRAY_SIZE for --examine --export
X-Git-Tag: mdadm-3.3-rc1~214
X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fmdadm.git;a=commitdiff_plain;h=80730bae52ebbe2b682366da6d859c1ef907dee1

Add MD_ARRAY_SIZE for --examine --export

An additional pair of key=value for --examine --export.

Signed-off-by: Maciej Naruszewicz <maciej.naruszewicz@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/super1.c b/super1.c
index b04945f5..0df5beea 100644
--- a/super1.c
+++ b/super1.c
@@ -495,6 +495,7 @@ static void export_examine_super1(struct supertype *st)
 	struct mdp_superblock_1 *sb = st->sb;
 	int i;
 	int len = 32;
+	int layout;
 
 	printf("MD_LEVEL=%s\n", map_num(pers, __le32_to_cpu(sb->level)));
 	printf("MD_DEVICES=%d\n", __le32_to_cpu(sb->raid_disks));
@@ -506,6 +507,24 @@ static void export_examine_super1(struct supertype *st)
 		}
 	if (len)
 		printf("MD_NAME=%.*s\n", len, sb->set_name);
+	if (__le32_to_cpu(sb->level) > 0) {
+		int ddsks = 0, ddsks_denom = 1;
+		switch(__le32_to_cpu(sb->level)) {
+			case 1: ddsks=1;break;
+			case 4:
+			case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break;
+			case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break;
+			case 10:
+				layout = __le32_to_cpu(sb->layout);
+				ddsks = __le32_to_cpu(sb->raid_disks);
+				ddsks_denom = (layout&255) * ((layout>>8)&255);
+			}
+		if (ddsks) {
+			long long asize = __le64_to_cpu(sb->size);
+			asize = (asize << 9) * ddsks / ddsks_denom;
+			printf("MD_ARRAY_SIZE=%s\n",human_size_brief(asize,JEDEC));
+		}
+	}
 	printf("MD_UUID=");
 	for (i=0; i<16; i++) {
 		if ((i&3)==0 && i != 0) printf(":");