centos 20T硬碟（超過16T）分區

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最近新買了一台伺服器DELL R730

首先我們做了一個raid 1 和raid 5

在raid 1 上安裝系統

安裝完系統之後，現在要進行分區了，那個raid 5 做完之後，實際大小是19T

所以這裡不能用傳統的fdisk來分區了，這裡採用parted來分區，我們的系統是centos 7的，檔案系統類型都設成是xfs檔案系統了

這裡開始分區：

[[email protected] ~]# parted /dev/sdb
GNU Parted 3.1
使用 /dev/sdb
Welcome to GNU Parted! Type ‘help‘ to view a list of commands.
(parted) p                                                                
Model: DELL PERC H730P Mini (scsi)
Disk /dev/sdb: 20.0TB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number  Start  End  Size  File system  Name  標誌

(parted) help
  align-check TYPE N                        check partition N for TYPE(min|opt) alignment
  help [COMMAND]                           print general help, or help on COMMAND
  mklabel,mktable LABEL-TYPE               create a new disklabel (partition table)
  mkpart PART-TYPE [FS-TYPE] START END     make a partition
  name NUMBER NAME                         name partition NUMBER as NAME
  print [devices|free|list,all|NUMBER]     display the partition table, available devices, free space, all found partitions, or a particular partition
  quit                                     exit program
  rescue START END                         rescue a lost partition near START and END
  rm NUMBER                                delete partition NUMBER
  select DEVICE                            choose the device to edit
  disk_set FLAG STATE                      change the FLAG on selected device
  disk_toggle [FLAG]                       toggle the state of FLAG on selected device
  set NUMBER FLAG STATE                    change the FLAG on partition NUMBER
  toggle [NUMBER [FLAG]]                   toggle the state of FLAG on partition NUMBER
  unit UNIT                                set the default unit to UNIT
  version                                  display the version number and copyright information of GNU Parted
(parted) print free
Model: DELL PERC H730P Mini (scsi)
Disk /dev/sdb: 20.0TB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number  Start   End     Size    File system  Name  標誌
        17.4kB  20.0TB  20.0TB  Free Space

(parted) parted                                                           
  align-check TYPE N                        check partition N for TYPE(min|opt) alignment
  help [COMMAND]                           print general help, or help on COMMAND
  mklabel,mktable LABEL-TYPE               create a new disklabel (partition table)
  mkpart PART-TYPE [FS-TYPE] START END     make a partition
  name NUMBER NAME                         name partition NUMBER as NAME
  print [devices|free|list,all|NUMBER]     display the partition table, available devices, free space, all found partitions, or a particular partition
  quit                                     exit program
  rescue START END                         rescue a lost partition near START and END
  rm NUMBER                                delete partition NUMBER
  select DEVICE                            choose the device to edit
  disk_set FLAG STATE                      change the FLAG on selected device
  disk_toggle [FLAG]                       toggle the state of FLAG on selected device
  set NUMBER FLAG STATE                    change the FLAG on partition NUMBER
  toggle [NUMBER [FLAG]]                   toggle the state of FLAG on partition NUMBER
  unit UNIT                                set the default unit to UNIT
  version                                  display the version number and copyright information of GNU Parted

(parted) mkpart /dev/sdb1
檔案系統類型？  [ext2]? xfs
起始點？ 0                                                                
結束點？ 5120GB                                                           
警告: The resulting partition is not properly aligned for best performance.
忽略/Ignore/放棄/Cancel? ignore                                           
(parted) mkpart /dev/sdb2
檔案系統類型？  [ext2]? xfs                                               
起始點？ 5120GB
結束點？ 10240GB
(parted) mkpart /dev/sdb3
檔案系統類型？  [ext2]? xfs                                               
起始點？ 10240GB                                                          
結束點？ 15360GB                                                          

(parted) print free                                                       
Model: DELL PERC H730P Mini (scsi)
Disk /dev/sdb: 20.0TB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number  Start   End     Size    File system  Name       標誌
 1      17.4kB  5120GB  5120GB               /dev/sdb1
        5120GB  5120GB  524kB   Free Space
 2      5120GB  10.2TB  5120GB               /dev/sdb2
 3      10.2TB  15.4TB  5120GB               /dev/sdb3
        15.4TB  20.0TB  4641GB  Free Space

(parted) mkpart /dev/sdb4
檔案系統類型？  [ext2]? xfs                                               
起始點？ 15360GB                                                          
結束點？ 20001GB                                                         
(parted) q       

經過尋找資料發現ext4格式不支援16T以上磁碟分割，沒辦法只能採用xfs格式。現在分區完成了。現在需要格式化磁碟了

mkfs.xfs /dev/sdb1

mkfs.xfs /dev/sdb2

mkfs.xfs /dev/sdb3

mkfs.xfs /dev/sdb4

現在就開始建立邏輯卷了

pvcreate

vgcreate    vgdata

lvcreate     lvdata

mkfs.xfs .../vgdata-lvdata

 

現在就是掛在分區了mkdir /ftproot

mount /dev/mapper/vgdata-lvdata    /ftproot

vim /etc/fstab

/dev/mapper/vgdata-lvdata                 /ftproot  xfs    defaults    0 0 

 

有關/etc/fstab下面的列的參數的意思是：http://blog.csdn.net/duyiwuer2009/article/details/8644753

 

 

文章參考:

http://blog.sina.com.cn/s/blog_406127500102uyr9.html

http://www.tuicool.com/articles/u63e6f

http://blog.chinaunix.net/uid-26413552-id-3379232.html

 

centos 20T硬碟（超過16T）分區