diff options
Diffstat (limited to 'super1.c')
| -rw-r--r-- | super1.c | 31 |
1 files changed, 27 insertions, 4 deletions
@@ -549,11 +549,34 @@ static int update_super1(struct mdinfo *info, void *sbv, char *update, rv = 1; } } - if (strcmp(update, "grow") == 0) { + if (strcmp(update, "linear-grow-new") == 0) { + int i; + int rfd; + int max = __le32_to_cpu(sb->max_dev); + + for (i=0 ; i < max ; i++) + if (__le16_to_cpu(sb->dev_roles[i]) >= 0xfffe) + break; + sb->dev_number = __cpu_to_le32(i); + info->disk.number = i; + if (max >= __le32_to_cpu(sb->max_dev)) + sb->max_dev = __cpu_to_le32(max+1); + + if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || + read(rfd, sb->device_uuid, 16) != 16) { + *(__u32*)(sb->device_uuid) = random(); + *(__u32*)(sb->device_uuid+4) = random(); + *(__u32*)(sb->device_uuid+8) = random(); + *(__u32*)(sb->device_uuid+12) = random(); + } + + sb->dev_roles[i] = + __cpu_to_le16(info->disk.raid_disk); + } + if (strcmp(update, "linear-grow-update") == 0) { sb->raid_disks = __cpu_to_le32(info->array.raid_disks); - /* As we are just adding a spare, there is no need to - * make any change to the dev_roles array - */ + sb->dev_roles[info->disk.number] = + __cpu_to_le16(info->disk.raid_disk); } if (strcmp(update, "resync") == 0) { /* make sure resync happens */ |