imsm: support the Array Creation Time field in metadata

[thirdparty/mdadm.git] / super-intel.c

diff --git a/super-intel.c b/super-intel.c
index 6680df29b4d07e373369582d848caade22523767..8840fffea2e49a81a000373d88815d80b333e8b3 100644 (file)
--- a/super-intel.c
+++ b/super-intel.c
@@ -260,8 +260,9 @@ struct imsm_super {
                                         * (starts at 1)
                                         */
        __u16 filler1;                  /* 0x4E - 0x4F */
-#define IMSM_FILLERS 34
-       __u32 filler[IMSM_FILLERS];     /* 0x50 - 0xD7 RAID_MPB_FILLERS */
+       __u64 creation_time;            /* 0x50 - 0x57 Array creation time */
+#define IMSM_FILLERS 32
+       __u32 filler[IMSM_FILLERS];     /* 0x58 - 0xD7 RAID_MPB_FILLERS */
        struct imsm_disk disk[1];       /* 0xD8 diskTbl[numDisks] */
        /* here comes imsm_dev[num_raid_devs] */
        /* here comes BBM logs */
@@ -2014,6 +2015,7 @@ static void examine_super_imsm(struct supertype *st, char *homehost)
        __u32 sum;
        __u32 reserved = imsm_reserved_sectors(super, super->disks);
        struct dl *dl;
+       time_t creation_time;
 
        strncpy(str, (char *)mpb->sig, MPB_SIG_LEN);
        str[MPB_SIG_LEN-1] = '\0';
@@ -2022,6 +2024,9 @@ static void examine_super_imsm(struct supertype *st, char *homehost)
        printf("    Orig Family : %08x\n", __le32_to_cpu(mpb->orig_family_num));
        printf("         Family : %08x\n", __le32_to_cpu(mpb->family_num));
        printf("     Generation : %08x\n", __le32_to_cpu(mpb->generation_num));
+       creation_time = __le64_to_cpu(mpb->creation_time);
+       printf("  Creation Time : %.24s\n",
+               creation_time ? ctime(&creation_time) : "Unknown");
        printf("     Attributes : ");
        if (imsm_check_attributes(mpb->attributes))
                printf("All supported\n");
@@ -2126,6 +2131,7 @@ static void export_examine_super_imsm(struct supertype *st)
        printf("MD_LEVEL=container\n");
        printf("MD_UUID=%s\n", nbuf+5);
        printf("MD_DEVICES=%u\n", mpb->num_disks);
+       printf("MD_CREATION_TIME=%llu\n", __le64_to_cpu(mpb->creation_time));
 }
 
 static void detail_super_imsm(struct supertype *st, char *homehost,
@@ -5762,6 +5768,7 @@ static int add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk,
                sum += __gen_imsm_checksum(mpb);
                mpb->family_num = __cpu_to_le32(sum);
                mpb->orig_family_num = mpb->family_num;
+               mpb->creation_time = __cpu_to_le64((__u64)time(NULL));
        }
        super->current_disk = dl;
        return 0;