linux下添加硬盘0721

首先 vmware下给机器add一块硬盘

重启机器

[root@Db2 ~]# fdisk -l

Disk /dev/sda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          12       96358+  83  Linux
/dev/sda2              13         784     6201090   83  Linux
/dev/sda3             785        1044     2088450   82  Linux swap
[root@Db2 ~]# reboot

Broadcast message from root (pts/0) (Thu Jul 21 15:45:50 2011):

The system is going down for reboot NOW!
[root@Db2 ~]#
Last login: Thu Jul 21 15:22:27 2011 from 192.168.0.1
[root@Db2 ~]# fdisk -l

Disk /dev/sda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          12       96358+  83  Linux
/dev/sda2              13         784     6201090   83  Linux
/dev/sda3             785        1044     2088450   82  Linux swap

Disk /dev/sdb: 6442 MB, 6442450944 bytes
255 heads, 63 sectors/track, 783 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdb doesn\'t contain a valid partition table
[root@Db2 ~]# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel. 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)

Command (m for help): m
Command action
   a   toggle a bootable flag
   b   edit bsd disklabel
   c   toggle the dos compatibility flag
   d   delete a partition
   l   list known partition types
   m   print this menu
   n   add a new partition
   o   create a new empty DOS partition table
   p   print the partition table
   q   quit without saving changes
   s   create a new empty Sun disklabel
   t   change a partition\'s system id
   u   change display/entry units
   v   verify the partition table
   w   write table to disk and exit
   x   extra functionality (experts only)

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-783, default 1): 1
Last cylinder or +size or +sizeM or +sizeK (1-783, default 783): 783

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

Calling ioctl() to re-read partition table.
Syncing disks.
[root@Db2 ~]# fdisk -l

Disk /dev/sda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          12       96358+  83  Linux
/dev/sda2              13         784     6201090   83  Linux
/dev/sda3             785        1044     2088450   82  Linux swap

Disk /dev/sdb: 6442 MB, 6442450944 bytes
255 heads, 63 sectors/track, 783 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1         783     6289416   83  Linux
[root@Db2 ~]# mkfs -t ext3 /dev/sdb1
mke2fs 1.35 (28-Feb-2004)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
786432 inodes, 1572354 blocks
78617 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=1610612736
48 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks:
        32768, 98304, 163840, 229376, 294912, 819200, 884736

Writing inode tables: done                           
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 35 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.
[root@Db2 ~]# mkdir /db2
[root@Db2 ~]# mount /dev/sdb1 /db2
[root@Db2 ~]# df -g
df：无效选项 -- g
请尝试执行‘df --help’来获取更多信息。
[root@Db2 ~]# df -h
Filesystem            容量  已用 可用 已用% 挂载点
/dev/sda2             5.9G  3.6G  2.0G  65% /
/dev/sda1              92M   12M   75M  14% /boot
none                  506M     0  506M   0% /dev/shm
/dev/sdb1             6.0G   45M  5.6G   1% /db2
[root@Db2 ~]# vi /etc/fstab

# This file is edited by fstab-sync - see \'man fstab-sync\' for details
LABEL=/                 /                       ext3    defaults        1 1
LABEL=/boot             /boot                   ext3    defaults        1 2
none                    /dev/pts                devpts  gid=5,mode=620  0 0
none                    /dev/shm                tmpfs   defaults        0 0
none                    /proc                   proc    defaults        0 0
none                    /sys                    sysfs   defaults        0 0
LABEL=SWAP-sda3         swap                    swap    defaults        0 0
/dev/hdc                /media/cdrom            auto    pamconsole,fscOntext=system_u:object_r:removable_t,exec,noauto,managed 0 0