1.扫描
echo "- - -" > /sys/class/scsi_host/host0/scan
[root@localhost ~]# 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 9.8G 0 part /
└─sda3 8:3 0 2G 0 part [SWAP]
sdb 8:16 0 30G 0 disk
sdc 8:32 0 40G 0 disk
sr0 11:0 1 6.7G 0 rom
sr1 11:1 1 3.7G 0 rom
sr2 11:2 1 10.3G 0 rom
2.分区（分块）
[root@localhost ~]# fdisk /dev/sdc
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 0x204ba252.
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):
First sector (2048-83886079, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-83886079, default 83886079): +39G
Partition 1 of type Linux and of size 39 GiB is set
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost ~]# 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 9.8G 0 part /
└─sda3 8:3 0 2G 0 part [SWAP]
sdb 8:16 0 30G 0 disk
sdc 8:32 0 40G 0 disk
└─sdc1 8:33 0 39G 0 part
sr0 11:0 1 6.7G 0 rom
sr1 11:1 1 3.7G 0 rom
sr2 11:2 1 10.3G 0 rom
3.创建文件系统（对块进行组织和管理）
[root@localhost ~]# mkfs.xfs /dev/sdc1
meta-data=/dev/sdc1 isize=512 agcount=4, agsize=2555904 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=10223616, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=4992, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
4.永久挂载（实质是挂载文件系统）
# 查看UUID
[root@localhost ~]# blkid
/dev/sda2: UUID="fc561a25-054f-4aab-9f09-64ec757d5271" TYPE="xfs"
/dev/sda1: UUID="a0cc39dc-32b3-475e-9e90-8d268114c2f1" TYPE="xfs"
/dev/sda3: UUID="aef99b98-add1-47f6-bd0b-61ad4bc4a449" TYPE="swap"
/dev/sr0: UUID="2019-08-15-21-52-52-00" LABEL="CentOS-8-BaseOS-x86_64" TYPE="iso9660" PTTYPE="dos"
/dev/sr1: UUID="2017-03-28-13-24-36-00" LABEL="CentOS_6.9_Final" TYPE="iso9660" PTTYPE="dos"
/dev/sr2: UUID="2019-09-09-19-08-41-00" LABEL="CentOS 7 x86_64" TYPE="iso9660" PTTYPE="dos"
/dev/sdc1: UUID="d1d8c01a-7a1b-4fa7-a70e-cee6fa4ab24d" TYPE="xfs"
# 写配置文件
vim /etc/fstab
#
# /etc/fstab
# Created by anaconda on Thu Mar 12 00:15:00 2020
#
# 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
#
UUID=fc561a25-054f-4aab-9f09-64ec757d5271 / xfs defaults 0 0
UUID=a0cc39dc-32b3-475e-9e90-8d268114c2f1 /boot xfs defaults 0 0
UUID=aef99b98-add1-47f6-bd0b-61ad4bc4a449 swap swap defaults 0 0
UUID=d1d8c01a-7a1b-4fa7-a70e-cee6fa4ab24d /var/www/cobbler/ks_mirror xfs defaults 0 0
# 重新挂载
mount -a
[root@localhost ~]# 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 9.8G 0 part /
└─sda3 8:3 0 2G 0 part [SWAP]
sdb 8:16 0 40G 0 disk
└─sdb1 8:17 0 39G 0 part /var/www/cobbler/ks_mirror
sr0 11:0 1 6.7G 0 rom
sr1 11:1 1 3.7G 0 rom
sr2 11:2 1 10.3G 0 rom
