【CentOS】CentOS7 添加新硬盘

参考文章：  https://www.it610.com/article/520586.htm（亲测可用，因没有及时存档，故用该文章调整作为记录）

 

1、查看硬盘

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# fdisk -l Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x97d16691      Device Boot      Start         End      Blocks   Id  System

 

 

2、硬盘新建分区

使用fdisk命令对新增的sdb硬盘进行操作

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<strong># fdisk /dev/sdb</strong>   The device presents a logical sector size that is smaller than the physical sector size. Aligning to a physical sector (or optimal I/O) size boundary is recommended, or performance may be impacted.   WARNING: DOS-compatible mode is deprecated. It's strongly recommended to          switch off the mode (command 'c') and change display units to          sectors (command 'u').   Command (m for help): <strong>p</strong> #查看此颗硬盘分区状况   Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x97d16691      Device Boot      Start         End      Blocks   Id  System   Command (m for help):<strong> n</strong> #新建分区 Command action    e   extended    p   primary partition (1-4) p #新建原始分区 Partition number (1-4): <strong>1</strong> #分区编号 First cylinder (1-243201, default 1): #从第一个扇区开始（使用默认） Last cylinder, +cylinders or +size{K,M,G} (1-243201, default 243201): #直接回车使用所有空间 Using default value 243201   Command (m for help): <strong>p</strong> #再次查看分区情况 Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x97d16691      Device Boot      Start         End      Blocks   Id  System /dev/sdb1               1      243201  1953512001   83  Linux Partition 1 does not start on physical sector boundary.   Command (m for help): <strong>w</strong> #保存分区 The partition table has been altered!   Calling ioctl() to re-read partition table. Syncing disks.

　　

3、再次查看

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# fdisk -l Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x97d16691      Device Boot      Start         End      Blocks   Id  System /dev/sdb1               1      243201  1953512001   83  Linux Partition 1 does not start on physical sector boundary.

(此时可以看见新建的sdb1分区,还需要格式化才能使用)

 

4、格式化分区

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<strong># mkfs.ext3 /dev/sdb1</strong> mke2fs 1.41.12 (17-May-2010) /dev/sdb1 alignment is offset by 512 bytes. This may result in very poor performance, (re)-partitioning suggested. Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=1 blocks, Stripe width=0 blocks 122101760 inodes, 488378000 blocks 24418900 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=0 14905 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks:         32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,         4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,         102400000, 214990848   Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done   This filesystem will be automatically checked every 20 mounts or 180 days, whichever comes first.  Use tune2fs -c or -i to override.

　　

5、挂载

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# mkdir /eda_bak #建立新挂载点 # mount /dev/sdb1 /eda_bak #挂载使用此硬盘 # mount  #查看系统挂载情况 /dev/sda3 on / type ext3 (rw) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) devpts on /dev/pts type devpts (rw,gid=5,mode=620) tmpfs on /dev/shm type tmpfs (rw,rootcontext="system_u:object_r:tmpfs_t:s0") /dev/sda1 on /boot type ext3 (rw) none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw) sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw) gvfs-fuse-daemon on /root/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev) /dev/sdb1 on /eda_bak type ext3 (rw)   # df -h #查看使用空间 Filesystem            Size  Used Avail Use% Mounted on /dev/sda3             457G  3.0G  431G   1% / tmpfs                 995M  260K  994M   1% /dev/shm /dev/sda1             194M   26M  158M  15% /boot /dev/sdb1             1.8T  196M  1.7T   1% /eda_bak

　　

6、开机自动挂载

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# vi /etc/fstab 增加 /dev/sdb1               /eda_bak                ext3    defaults        1 2