挂载xfs磁盘

# 磁盘初始化
[root@localhost ~]# 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.

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: 0xfdf10f13

   Device Boot      Start         End      Blocks   Id  System

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
Value out of range.
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): n
Partition type:
   p   primary (1 primary, 0 extended, 3 free)
   e   extended
Select (default p): p
Partition number (2-4, default 2): 2
First sector (20973568-41943039, default 20973568):
Using default value 20973568
Last sector, +sectors or +size{K,M,G} (20973568-41943039, default 41943039):
Using default value 41943039
Partition 2 of type Linux and of size 10 GiB is set

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.

# 磁盘格式化XFS
[root@localhost ~]# mkfs.xfs /dev/sdb2
meta-data=/dev/sdb2              isize=512    agcount=4, agsize=655296 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0, sparse=0
data     =                       bsize=4096   blocks=2621184, 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@localhost ~]# 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

f[root@localhost ~]# blkid /dev/sdb1
/dev/sdb1: UUID="bb907eb7-27a4-4851-801e-77e6e22c84b9" TYPE="xfs"
[root@localhost ~]# blkid /dev/sdb2
/dev/sdb2: UUID="2595392c-1380-4e71-8c8a-dbd56b9f242e" TYPE="xfs"
[root@localhost ~]# 

# 使用UUID，是为了防止服务器重启磁盘设备名会变化
[root@localhost ~]# vim /etc/fstab 

#
# /etc/fstab
# Created by anaconda on Thu Mar  9 09:52:36 2017
#
# 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=9f06433e-f33c-457a-912e-fcbb8d3daef3 /boot                   xfs     defaults        0 0
/dev/mapper/cl-swap     swap                    swap    defaults        0 0
UUID="bb907eb7-27a4-4851-801e-77e6e22c84b9" /data xfs   defaults        0 0
UUID="2595392c-1380-4e71-8c8a-dbd56b9f242e" /backup xfs defaults        0 0

# 挂载
[root@localhost ~]# mount -a
# 检查
[root@localhost ~]# df -HT
Filesystem          Type      Size  Used Avail Use% Mounted on
/dev/mapper/cl-root xfs        19G  1.5G   17G   9% /
devtmpfs            devtmpfs  501M     0  501M   0% /dev
tmpfs               tmpfs     512M     0  512M   0% /dev/shm
tmpfs               tmpfs     512M  7.0M  506M   2% /run
tmpfs               tmpfs     512M     0  512M   0% /sys/fs/cgroup
/dev/sda1           xfs       1.1G  146M  919M  14% /boot
tmpfs               tmpfs     103M     0  103M   0% /run/user/0
/dev/sdb1           xfs        11G   34M   11G   1% /data
/dev/sdb2           xfs        11G   34M   11G   1% /backup