linux新增硬盘，做ext4的文件系统

趁年轻还记得这些简单命令，做个小记录，等老的想不起来的时候再来看。

环境：Oracle linux 6.3

一。查看现在的分区及文件系统

[root@OEL63 ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_oel63-lv_root
                       18G   11G  5.9G  65% /
tmpfs                 496M  375M  121M  76% /dev/shm
/dev/sda1             485M   55M  405M  12% /boot
[root@OEL63 ~]# fdisk -l


Disk /dev/sda: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000cd5a1




   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          64      512000   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2              64        1959    15215616   8e  Linux LVM
/dev/sda3            1959        2610     5236185   8e  Linux LVM




Disk /dev/sdb: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x3d49ddef




   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1         130     1044193+  83  Linux




Disk /dev/sdc: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000








Disk /dev/mapper/vg_oel63-lv_root: 18.9 GB, 18857590784 bytes
255 heads, 63 sectors/track, 2292 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000








Disk /dev/mapper/vg_oel63-lv_swap: 2080 MB, 2080374784 bytes
255 heads, 63 sectors/track, 252 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

二。新建分区及文件

[root@OEL63 ~]# fdisk /dev/sdc
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0xcb0d4a1a.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.




Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)




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): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-1305, default 1): 
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-1305, default 1305): 
Using default value 1305




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




Calling ioctl() to re-read partition table.

Syncing disks.

[root@OEL63 ~]# mkfs -t ext4 /dev/sdc1
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
655360 inodes, 2620595 blocks
131029 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2684354560
80 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




Writing inode tables: done                            
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done




This filesystem will be automatically checked every 27 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.

三。挂载到具体目录

[root@OEL63 ~]# mkdir /data01
[root@OEL63 ~]# mount /dev/sdc1 /data01
[root@OEL63 ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_oel63-lv_root
                       18G   11G  5.9G  65% /
tmpfs                 496M  375M  121M  76% /dev/shm
/dev/sda1             485M   55M  405M  12% /boot
/dev/sdc1             9.9G  151M  9.2G   2% /data01
[root@OEL63 ~]# vi /etc/fstab 
#
# /etc/fstab
# Created by anaconda on Tue Aug 20 00:50:32 2013
#
# 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/vg_oel63-lv_root /                       ext4    defaults        1 1
UUID=c7219271-21be-4f0c-bc21-0dce3d881129 /boot                   ext4    defaults        1 2
/dev/mapper/vg_oel63-lv_swap swap                    swap    defaults        0 0
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0

proc                    /proc                   proc    defaults        0 0

/dev/sdc1               /data01                 ext4    defaults        1 1

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