centos7 磁盘格式化

[root@NFS198 ~]# mkfs.xfs /dev/sdb
sdb   sdb1  sdb2  
[root@NFS198 ~]# mkfs.xfs /dev/sdb
mkfs.xfs: /dev/sdb appears to contain a partition table (dos).
mkfs.xfs: Use the -f option to force overwrite.
[root@NFS198 ~]# mkfs.xfs -f /dev/sdb
meta-data=/dev/sdb               isize=512    agcount=4, agsize=134176768 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0, sparse=0
data     =                       bsize=4096   blocks=536707072, imaxpct=5
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal log           bsize=4096   blocks=262064, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0