fdisk -l /dev/sdb
mount /dev/sdb5 /mnt/ 挂载
df -h
df -T 查看分区类型
mkdir /home/weifeng/123
ls /home/
mount /dev/sdb1 /home/
ls /home/原先home下文件覆盖
umount /home/ 卸载
ls /home/ 可见原先数据
mount LABEL=weifeng /home/weifeng/123/
[root@compute ~]# mkfs.xfs -f /dev/sdb #没有分区 也可以直接格式化 ， Linux访问，必须挂载到一个目录下
meta-data=/dev/sdb isize=256 agcount=4, agsize=1310720 blks
= sectsz=512 attr=2, projid32bit=1
= crc=0 finobt=0
data = bsize=4096 blocks=5242880, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
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@compute ~]# blkid /dev/sdb
/dev/sdb: UUID="ddb72be6-3af1-4813-9c9e-62160171bf19" TYPE="xfs"
[root@compute ~]# mount /dev/sdb /mnt/
[root@compute ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 18G 2.0G 16G 12% /
devtmpfs 907M 0 907M 0% /dev
tmpfs 917M 0 917M 0% /dev/shm
tmpfs 917M 8.6M 908M 1% /run
tmpfs 917M 0 917M 0% /sys/fs/cgroup
/dev/sda1 497M 169M 328M 34% /boot
tmpfs 184M 0 184M 0% /run/user/0
/dev/sdb 20G 33M 20G 1% /mnt
挂载点可以说是磁盘的入口
[root@compute ~]# umount /dev/sdb 卸载
[root@compute ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 18G 2.0G 16G 12% /
devtmpfs 907M 0 907M 0% /dev
tmpfs 917M 0 917M 0% /dev/shm
tmpfs 917M 8.6M 908M 1% /run
tmpfs 917M 0 917M 0% /sys/fs/cgroup
/dev/sda1 497M 169M 328M 34% /boot
tmpfs 184M 0 184M 0% /run/user/0
除了mount ，也可以配置文件挂载 /etc/fstab
[root@compute ~]# vim /etc/fstab
/dev/mapper/centos-root / xfs defaults 0 0
UUID=ed05abd0-7e8b-4f22-8acb-e86bb1de7276 /boot xfs defaults 0 0
/dev/mapper/centos-swap swap swap defaults 0 0
/dev/sdb /mnt xfs defaults 0 0
也可以通过 mount UUID 来实现挂载
[root@compute ~]# blkid
/dev/sdb: UUID="ddb72be6-3af1-4813-9c9e-62160171bf19" TYPE="xfs"
/dev/sda1: UUID="ed05abd0-7e8b-4f22-8acb-e86bb1de7276" TYPE="xfs"
/dev/sda2: UUID="FnQHjq-rpt4-oNHm-uybd-cwXv-qh37-XYGyfZ" TYPE="LVM2_member"
/dev/mapper/centos-root: UUID="41199724-7ecb-4006-9c9a-96faaeea7303" TYPE="xfs"
/dev/mapper/centos-swap: UUID="6765adfd-2c38-4d52-9c5e-0ccf7f4a1001" TYPE="swap"
[root@compute ~]# mount UUID="ddb72be6-3af1-4813-9c9e-62160171bf19" /mnt
[root@compute ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 18G 2.0G 16G 12% /
devtmpfs 907M 0 907M 0% /dev
tmpfs 917M 0 917M 0% /dev/shm
tmpfs 917M 8.6M 908M 1% /run
tmpfs 917M 0 917M 0% /sys/fs/cgroup
/dev/sda1 497M 169M 328M 34% /boot
tmpfs 184M 0 184M 0% /run/user/0
/dev/sdb 20G 33M 20G 1% /mnt