基本分区管理

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基本分区(MBR|GPT) ----> Filesystem ----> mount
逻辑卷 ----> Filesystem ----> mount

[root@server0 ~]# ll /dev/vd*
brw-rw----. 1 root disk 253, 0 11月 30 15:02 /dev/vda
brw-rw----. 1 root disk 253, 1 11月 30 15:02 /dev/vda1
brw-rw----. 1 root disk 253, 16 11月 30 15:02 /dev/vdb
brw-rw----. 1 root disk 252, 32 11月 30 15:02 /dev/vdc

[root@server0 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vda 253:0 0 10G 0 disk
└─vda1 253:1 0 10G 0 part /
vdb 253:16 0 10G 0 disk
vdc 252:32 0 8G 0 disk

====fdisk====

MBR 4个分区（4个主分区，扩展分区，逻辑分区）
1.创建分区
# fdisk /dev/vdb
# fdisk -l /dev/vdb
# partprobe /dev/vdb
# ll /dev/vdb*
brw-rw----. 1 root disk 253, 16 11月 30 15:13 /dev/vdb
brw-rw----. 1 root disk 253, 17 11月 30 15:13 /dev/vdb1
brw-rw----. 1 root disk 253, 18 11月 30 15:13 /dev/vdb2

====gdisk====

GPT 128个主分区
1.创建分区
# gdisk -l /dev/vdc
# gdisk /dev/vdc
# partprobe /dev/vdc
# ll /dev/vdc*
brw-rw----. 1 root disk 253, 32 Jun 6 17:38 /dev/vdc
brw-rw----. 1 root disk 253, 33 Jun 6 17:38 /dev/vdc1
brw-rw----. 1 root disk 253, 34 Jun 6 17:38 /dev/vdc2

fdisk -l /dev/vdb

$file://C:\Users\anliu\AppData\Local\Temp\ct_tmp/1.png$

$file://C:\Users\anliu\AppData\Local\Temp\ct_tmp/2.png$

2.创建文件系统（格式化）centos7默认使用xfs
# mkfs.xfs /dev/vdb1
# mkfs.ext4 /dev/vdb2

3.挂载
# mkdir /mnt/disk1
# mkdir /mnt/disk2
# mount -t xfs -o ro /dev/vdb1 /mnt/disk1 //手动不推荐
# umount /mnt/disk1

# blkid
# vim /etc/fstab
UUID="9bf6b9f7-92ad-441b-848e-0257cbb883d1" /mnt/disk1 auto defaults 0 0
UUID="4d26172c-7aff-4388-baa5-c6756c014d52" /mnt/disk2 ext4 ro 0 0
# mount -a

[root@server0 ~]# df -Th
Filesystem Type Size Used Avail Use% Mounted on
/dev/vda1 xfs 10G 3.2G 6.8G 33% /
devtmpfs devtmpfs 906M 0 906M 0% /dev
tmpfs tmpfs 921M 140K 921M 1% /dev/shm
tmpfs tmpfs 921M 17M 904M 2% /run
tmpfs tmpfs 921M 0 921M 0% /sys/fs/cgroup
/dev/vdb1 xfs 197M 11M 187M 6% /mnt/disk1
/dev/vdb2 ext4 283M 2.1M 262M 1% /mnt/disk2

[root@server0 ~]# mount
mqueue on /dev/mqueue type mqueue (rw,relatime,seclabel)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,seclabel)
/dev/vdb1 on /mnt/disk1 type xfs (rw,relatime,seclabel,attr2,inode64,noquota)
/dev/vdb2 on /mnt/disk2 type xfs (ro,relatime,seclabel,attr2,inode64,noquota)