添加磁盘
在虚拟机中添加一个1T和4T的磁盘
添加磁盘
可以通过查看/dev下面的设备或者lsblk命令确认磁盘是否添加成功
[root@ennan ~]# ll /dev/sd*
brw-rw----. 1 root disk 8, 0 Aug 19 19:32 /dev/sda
brw-rw----. 1 root disk 8, 1 Aug 19 19:32 /dev/sda1
brw-rw----. 1 root disk 8, 2 Aug 19 19:32 /dev/sda2
brw-rw----. 1 root disk 8, 3 Aug 19 19:32 /dev/sda3
brw-rw----. 1 root disk 8, 16 Aug 19 19:32 /dev/sdb
brw-rw----. 1 root disk 8, 32 Aug 19 19:32 /dev/sdc
# /dev/seb /dev/sdc为新添加的磁盘
[root@ennan ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
├─sda2 8:2 0 800M 0 part [SWAP]
└─sda3 8:3 0 18.2G 0 part /
sdb 8:16 0 1T 0 disk
sdc 8:32 0 4T 0 disk
sr0 11:0 1 4.3G 0 rom
# /dev/seb /dev/sdc为新添加的磁盘
创建分区
通过fdisk创建主分区
[root@ennan ~]# 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 0xaa8a2dfe.
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
# p为主分区
e extended
# e为扩展分区
Select (default p):
Using default response p
Partition number (1-4, default 1):
First sector (2048-2147483647, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-2147483647, default 2147483647): +10G #选择创建的分区大小
Partition 1 of type Linux and of size 10 GiB is set
Command (m for help): p
Disk /dev/sdb: 1099.5 GB, 1099511627776 bytes, 2147483648 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: 0xaa8a2dfe
Device Boot Start End Blocks Id System
/dev/sdb1 2048 20973567 10485760 83 Linux
创建扩展分区
Command (m for help): n
Partition type:
p primary (1 primary, 0 extended, 3 free)
e extended
Select (default p): e
Partition number (2-4, default 2):
First sector (20973568-2147483647, default 20973568):
Using default value 20973568
Last sector, +sectors or +size{K,M,G} (20973568-2147483647, default 2147483647):
Using default value 2147483647
Partition 2 of type Extended and of size 1014 GiB is set
Command (m for help): p
Disk /dev/sdb: 1099.5 GB, 1099511627776 bytes, 2147483648 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: 0xaa8a2dfe
Device Boot Start End Blocks Id System
/dev/sdb1 2048 20973567 10485760 83 Linux
/dev/sdb2 20973568 2147483647 1063255040 5 Extended
创建逻辑分区
Command (m for help): n
Partition type:
p primary (1 primary, 1 extended, 2 free)
l logical (numbered from 5)
Select (default p): l
Adding logical partition 5
First sector (20975616-2147483647, default 20975616):
Using default value 20975616
Last sector, +sectors or +size{K,M,G} (20975616-2147483647, default 2147483647): +20G
Partition 5 of type Linux and of size 20 GiB is set
Command (m for help): p
Disk /dev/sdb: 1099.5 GB, 1099511627776 bytes, 2147483648 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: 0xaa8a2dfe
Device Boot Start End Blocks Id System
/dev/sdb1 2048 20973567 10485760 83 Linux
/dev/sdb2 20973568 2147483647 1063255040 5 Extended
/dev/sdb5 20975616 62918655 20971520 83 Linux
保存分区信息
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
查看分区信息
[root@ennan ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
├─sda2 8:2 0 800M 0 part [SWAP]
└─sda3 8:3 0 18.2G 0 part /
sdb 8:16 0 1T 0 disk
├─sdb1 8:17 0 10G 0 part
├─sdb2 8:18 0 1K 0 part
└─sdb5 8:21 0 20G 0 part
sdc 8:32 0 4T 0 disk
sr0 11:0 1 4.3G 0 rom
格式化磁盘
[root@ennan ~]# mkfs.xfs /dev/sdb1
# 将/dev/sdb1格式化为xfs格式
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@ennan ~]# mkfs.xfs /dev/sdb5
# 将/dev/sdb5格式化为xfs格式
meta-data=/dev/sdb5 isize=512 agcount=4, agsize=1310720 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=5242880, 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
挂载
[root@ennan ~]# mkdir /sdb1
[root@ennan ~]# mkdir /sdb5
[root@ennan ~]# mount /dev/sdb1 /sdb1
[root@ennan ~]# mount /dev/sdb5 /sdb5
查看挂在后的空间
[root@ennan ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 19G 19G 33M 100% /
devtmpfs 476M 0 476M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 7.7M 479M 2% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/sda1 1014M 127M 888M 13% /boot
tmpfs 98M 0 98M 0% /run/user/0
/dev/sdb1 10G 33M 10G 1% /sdb1
/dev/sdb5 20G 33M 20G 1% /sdb5