搭建硬盘

  1. 集群分片有要求，避免同步失败
    1. 硬盘数量相同
    2. 硬盘地址相同

**

  1. 选择 SCSI 磁盘类型，不需要 cpu 参与控制

    1.   ![image.png](https://cdn.nlark.com/yuque/0/2020/png/367873/1589360667378-ff5e880b-0d25-4363-ba86-c5f3c6b1b478.png#align=left&display=inline&height=362&margin=%5Bobject%20Object%5D&name=image.png&originHeight=469&originWidth=430&size=68365&status=done&style=none&width=332)                                                                                                         ![image.png](https://cdn.nlark.com/yuque/0/2020/png/367873/1589360674511-cf90f793-587f-4dc6-9894-df20af1490ac.png#align=left&display=inline&height=74&margin=%5Bobject%20Object%5D&name=image.png&originHeight=74&originWidth=352&size=4923&status=done&style=none&width=352)
  • 挂载多两个硬盘

给硬盘分区

  • 查看当前硬盘

    fdisk -l

  1. Disk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectors
  2. Units = sectors of 1 * 512 = 512 bytes
  3. Sector size (logical/physical): 512 bytes / 512 bytes
  4. I/O size (minimum/optimal): 512 bytes / 512 bytes
  5. Disk label type: dos
  6. Disk identifier: 0x00022f87
  7.   Device Boot      Start         End      Blocks   Id  System
  8. /dev/sda1   *        2048     2099199     1048576   83  Linux
  9. /dev/sda2         2099200    41943039    19921920   8e  Linux LVM
  10. ---
  11. Disk /dev/sdb: 1073 MB, 1073741824 bytes, 2097152 sectors
  12. Units = sectors of 1 * 512 = 512 bytes
  13. Sector size (logical/physical): 512 bytes / 512 bytes
  14. I/O size (minimum/optimal): 512 bytes / 512 bytes
  15. ---
  16. Disk /dev/sdc: 1073 MB, 1073741824 bytes, 2097152 sectors
  17. Units = sectors of 1 * 512 = 512 bytes
  18. Sector size (logical/physical): 512 bytes / 512 bytes
  19. I/O size (minimum/optimal): 512 bytes / 512 bytes
  • 可以看到多了 /dev/sdb 和 /dev/sdc 两块硬盘
  • 创建分区
    • 仅创建主分区

      fdisk /dev/sdb

  1. Welcome to fdisk (util-linux 2.23.2).
  3. Changes will remain in memory only, until you decide to write them.
  4. Be careful before using the write command.
  6. Device does not contain a recognized partition table
  7. Building a new DOS disklabel with disk identifier 0x06d08c49.
  9. Command (m for help): m   
  10. Command action
  11.    a   toggle a bootable flag
  12.    b   edit bsd disklabel
  13.    c   toggle the dos compatibility flag
  14.    d   delete a partition
  15.    g   create a new empty GPT partition table
  16.    G   create an IRIX (SGI) partition table
  17.    l   list known partition types
  18.    m   print this menu                                                    # 打印命令菜单
  19.    n   add a new partition                                            # 添加新分区
  20.    o   create a new empty DOS partition table
  21.    p   print the partition table                                # 打印分区表
  22.    q   quit without saving changes                            # 退出而不保存
  23.    s   create a new empty Sun disklabel
  24.    t   change a partition's system id
  25.    u   change display/entry units
  26.    v   verify the partition table
  27.    w   write table to disk and exit                            # 把分区表写入硬盘并且退出
  28.    x   extra functionality (experts only)
  30. Command (m for help): n
  31. Partition type:
  32.    p   primary (0 primary, 0 extended, 4 free)    # 主分区
  33.    e   extended                                                                        # 拓展分区
  34. Select (default p): p
  35. Partition number (1-4, default 1): 1                          # 分区编号
  36. First sector (2048-2097151, default 2048):
  37. Using default value 2048
  38. Last sector, +sectors or +size{K,M,G} (2048-2097151, default 2097151):
  39. Using default value 2097151
  40. Partition 1 of type Linux and of size 1023 MiB is set
  42. Command (m for help): w
  43. The partition table has been altered!
  45. Calling ioctl() to re-read partition table.
  46. Syncing disks.
  • 再次键入 fdisk -l 会发现 /dev/sdb 的分区信息 ```shell

Disk /dev/sdb: 1073 MB, 1073741824 bytes, 2097152 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk label type: dos Disk identifier: 0x06d08c49

Device Boot Start End Blocks Id System /dev/sdb1 2048 2097151 1047552 83 Linux

  2. - 格式化分区
  3. > mkfs -t ext4 /dev/sdb1
  6. - 永久挂载硬盘
  7. > vim /etc/fstab
  9. ```shell
  10. # 在后面加载分区对应挂载目录
  11. /dev/sdb1 /mnt/p0 ext4 defaults 0 0

  • 重启

  • 挂载的目录可以访问了

    cd /mnt/p0

  • 对另外的硬盘和其他分片虚拟机也进行上面的操作