- centos7新增磁盤分區(qū)田盈、格式化、掛載
- 在對新增加的硬盤分區(qū)之前缴阎，先查看硬盤信息
- 可以看到有兩塊硬盤/dev/sda和/dev/sdb
- 其中/dev/sdb是我們新增的第二塊硬盤允瞧。
[root@moonyun ~]# fdisk -l
Disk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 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: 0x000ea002
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 41943039 19921920 8e Linux LVM
Disk /dev/sdb: 21.5 GB, 21474836480 bytes, 41943040 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 /dev/mapper/cl-root: 18.2 GB, 18249416704 bytes, 35643392 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 /dev/mapper/cl-swap: 2147 MB, 2147483648 bytes, 4194304 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
[root@moonyun ~]#
下面進行分區(qū)的相關操作
1.創(chuàng)建分區(qū)
[root@moonyun ~]# fdisk /dev/sdb
Welcome to fdisk (util-linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x0e2b08bb.
1）創(chuàng)建新分區(qū)
2）選擇分區(qū)類型，創(chuàng)建主分區(qū)
3）選擇分區(qū)編號
4）選擇默認初始磁柱編號2048
5）選擇默認截止磁柱編號+10G
6）查看新建分區(qū)的詳細信息
7）更改分區(qū)類型
8）將分區(qū)結果寫入分區(qū)表中
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p): p
Partition number (1-4, default 1): 1
First sector (2048-41943039, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-41943039, default 41943039): +10G
Partition 1 of type Linux and of size 10 GiB is set
Command (m for help): p
Disk /dev/sdb: 21.5 GB, 21474836480 bytes, 41943040 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: 0x0e2b08bb
Device Boot Start End Blocks Id System
/dev/sdb1 2048 20973567 10485760 83 Linux
Command (m for help): t
Partition number (1,2, default 2): 1
Hex code (type L to list all codes): L
0 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris
1 FAT12 27 Hidden NTFS Win 82 Linux swap / So c1 DRDOS/sec (FAT-
2 XENIX root 39 Plan 9 83 Linux c4 DRDOS/sec (FAT-
3 XENIX usr 3c PartitionMagic 84 OS/2 hidden C: c6 DRDOS/sec (FAT-
4 FAT16 <32M 40 Venix 80286 85 Linux extended c7 Syrinx
5 Extended 41 PPC PReP Boot 86 NTFS volume set da Non-FS data
6 FAT16 42 SFS 87 NTFS volume set db CP/M / CTOS / .
7 HPFS/NTFS/exFAT 4d QNX4.x 88 Linux plaintext de Dell Utility
8 AIX 4e QNX4.x 2nd part 8e Linux LVM df BootIt
9 AIX bootable 4f QNX4.x 3rd part 93 Amoeba e1 DOS access
a OS/2 Boot Manag 50 OnTrack DM 94 Amoeba BBT e3 DOS R/O
b W95 FAT32 51 OnTrack DM6 Aux 9f BSD/OS e4 SpeedStor
c W95 FAT32 (LBA) 52 CP/M a0 IBM Thinkpad hi eb BeOS fs
e W95 FAT16 (LBA) 53 OnTrack DM6 Aux a5 FreeBSD ee GPT
f W95 Ext'd (LBA) 54 OnTrackDM6 a6 OpenBSD ef EFI (FAT-12/16/
10 OPUS 55 EZ-Drive a7 NeXTSTEP f0 Linux/PA-RISC b
11 Hidden FAT12 56 Golden Bow a8 Darwin UFS f1 SpeedStor
12 Compaq diagnost 5c Priam Edisk a9 NetBSD f4 SpeedStor
14 Hidden FAT16 <3 61 SpeedStor ab Darwin boot f2 DOS secondary
16 Hidden FAT16 63 GNU HURD or Sys af HFS / HFS+ fb VMware VMFS
17 Hidden HPFS/NTF 64 Novell Netware b7 BSDI fs fc VMware VMKCORE
18 AST SmartSleep 65 Novell Netware b8 BSDI swap fd Linux raid auto
1b Hidden W95 FAT3 70 DiskSecure Mult bb Boot Wizard hid fe LANstep
1c Hidden W95 FAT3 75 PC/IX be Solaris boot ff BBT
1e Hidden W95 FAT1 80 Old Minix
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@moonyun ~]#
2.激活分區(qū)
[root@moonyun ~]# partprobe /dev/sdb
[root@moonyun ~]#
3.格式化分區(qū)
[root@moonyun ~]# mkfs
mkfs mkfs.cramfs mkfs.ext3 mkfs.fat mkfs.msdos mkfs.xfs
mkfs.btrfs mkfs.ext2 mkfs.ext4 mkfs.minix mkfs.vfat
[root@moonyun ~]# mkfs.xfs /dev/sdb1
meta-data=/dev/sdb1 isize=512 agcount=4, agsize=655360 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=2621440, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
[root@moonyun ~]#
4.建立掛載點
[root@moonyun ~]# mkdir /mydata
5.進行掛載并查看
[root@moonyun /]# mount /dev/sdb1 /mydata
[root@moonyun /]#
[root@moonyun /]# df -TH
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/cl-root xfs 19G 4.6G 14G 25% /
devtmpfs devtmpfs 496M 0 496M 0% /dev
tmpfs tmpfs 512M 144k 512M 1% /dev/shm
tmpfs tmpfs 512M 7.5M 505M 2% /run
tmpfs tmpfs 512M 0 512M 0% /sys/fs/cgroup
/dev/sda1 xfs 1.1G 181M 883M 18% /boot
tmpfs tmpfs 103M 37k 103M 1% /run/user/0
/dev/sdb1 xfs 11G 34M 11G 1% /mydata
[root@moonyun /]#
表示新建分區(qū)“/dev/sdb1”已掛載至“/mydata”蛮拔。
6.設置開機自動掛載磁盤
1）查詢磁盤UUID
[root@moonyun /]# blkid /dev/sdb1
/dev/sdb1: UUID="3a6a067d-f28f-495c-9651-d5df6e13072d" TYPE="xfs"
[root@moonyun /]#
2）vim編輯/etc/fstab
UUID=3a6a067d-f28f-495c-9651-d5df6e13072d /mydata xfs defaults 0 2
保存退出述暂。
7.重啟服務器測試
[root@moonyun /]# df -TH
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/cl-root xfs 19G 4.6G 14G 25% /
devtmpfs devtmpfs 496M 0 496M 0% /dev
tmpfs tmpfs 512M 144k 512M 1% /dev/shm
tmpfs tmpfs 512M 7.5M 505M 2% /run
tmpfs tmpfs 512M 0 512M 0% /sys/fs/cgroup
/dev/sda1 xfs 1.1G 181M 883M 18% /boot
tmpfs tmpfs 103M 37k 103M 1% /run/user/0
/dev/sdb1 xfs 11G 34M 11G 1% /mydata
[root@moonyun /]#
可以看出已經自動掛載了。
附：自動掛載的兩種方式UUID和/dev/sdb1建炫，倒數第二行和第一行重復畦韭，做注。
#
# /etc/fstab
# Created by anaconda on Thu Mar 29 07:31:38 2018
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/cl-root / xfs defaults 0 0
UUID=d91cdedb-618a-46d6-8daa-f8c0d071c272 /boot xfs defaults 0 0
/dev/mapper/cl-swap swap swap defaults 0 0
#UUID=3a6a067d-f28f-495c-9651-d5df6e13072d /mydata xfs defaults 0 2
/dev/sdb1 /mydata xfs defaults 0 2
