如何给linux添加一块硬盘

发布时间：2014-09-05 14:21:36作者：知识屋

如何给linux添加一块硬盘

overview：

添加一块15G的硬盘

170 fdisk -l 列出所有硬盘

171 sudo pvcreate /dev/sdb ----------sdb为新添加的物理盘，准备供lvm使用

172 sudo vgcreate 12c /dev/sdb -------------------创建名为12c的卷组

174 sudo lvcreate -l 100%FREE -n 12clv 12c ----------------------------创建名为12lv的逻辑卷

175 sudo mkfs -t ext4 /dev/12c/12clv --------------------------创建文件系统

176 sudo mkdir /12c ----------------------------创建挂载点

177 sudo vi /etc/fstab -------------------------设置挂载的选项，挂载点

178 sudo mount /12c -------------------------- 挂载这个文件系统

eg：

[root@localhost ~]# fdisk -l

Disk /dev/sda: 14.3 GB, 14343061504 bytes

255 heads, 63 sectors/track, 1743 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System

/dev/sda1 * 1 13 104391 83 Linux

/dev/sda2 14 1743 13896225 8e Linux LVM

Disk /dev/sdb: 16.1 GB, 16106127360 bytes

255 heads, 63 sectors/track, 1958 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdb doesn't contain a valid partition table

Disk /dev/dm-0: 13.1 GB, 13153337344 bytes

255 heads, 63 sectors/track, 1599 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/dm-0 doesn't contain a valid partition table

Disk /dev/dm-1: 1073 MB, 1073741824 bytes

255 heads, 63 sectors/track, 130 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/dm-1 doesn't contain a valid partition table

[root@localhost ~]# sudo pvcreate /dev/sdb

Writing physical volume data to disk "/dev/sdb"

Physical volume "/dev/sdb" successfully created

[root@localhost ~]# sudo vgcreate 12c /dev/sdb

Volume group "12c" successfully created

[root@localhost ~]# sudo lvcreate -l 100%FREE -n 12clv

Path required for Logical Volume "12clv"

Please provide a volume group name

Run `lvcreate --help' for more information.

[root@localhost ~]# sudo lvcreate -l 100%FREE -n 12clv 12c

Logical volume "12clv" created

[root@localhost ~]# sudo mkfs -t ext4 /dev/12c/12clv

mke4fs 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

983040 inodes, 3931136 blocks

196556 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=4026531840

120 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

Writing inode tables: done

Creating journal (32768 blocks): done

Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 22 mounts or

180 days, whichever comes first. Use tune4fs -c or -i to override.

[root@localhost ~]# sudo mkdir /12c

[root@localhost ~]# sudo vi /etc/fstab

/dev/VolGroup00/LogVol00 / ext3 defaults 1 1

LABEL=/boot /boot ext3 defaults 1 2

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/VolGroup00/LogVol01 swap swap defaults 0 0

/dev/12c/12clv /12c ext4 defaults 0 0

"/etc/fstab" 8L, 610C written

[root@localhost ~]# sudo mount /12c

[root@localhost ~]# cd /

[root@localhost /]# ll

total 166

drwxr-xr-x 3 root root 4096 Jun 26 07:26 12c

drwxr-xr-x 3 root root 4096 Jun 20 00:04 bin

drwxr-xr-x 4 root root 1024 Jun 19 10:34 boot

drwxr-xr-x 13 root root 3900 Jun 26 07:25 dev

drwxr-xr-x 98 root root 12288 Jun 26 07:30 etc

drwxr-xr-x 4 root root 4096 Jun 26 06:29 home

drwxr-xr-x 11 root root 4096 Jun 20 00:04 lib

drwxr-xr-x 9 root root 4096 Jun 20 00:04 lib64

drwx------ 2 root root 16384 Jun 19 10:23 lost+found

drwxr-xr-x 3 root root 4096 Jun 26 07:18 media

drwxr-xr-x 2 root root 0 Jun 26 07:18 misc

drwxr-xr-x 2 root root 4096 Feb 16 2010 mnt

drwxr-xr-x 2 root root 0 Jun 26 07:18 net

drwxr-xr-x 2 root root 4096 Feb 16 2010 opt

dr-xr-xr-x 123 root root 0 Jun 26 07:17 proc

drwxr-x--- 15 root root 4096 Jun 26 06:46 root

drwxr-xr-x 2 root root 12288 Jun 20 00:04 sbin

drwxr-xr-x 2 root root 4096 Jun 19 10:23 selinux

drwxr-xr-x 2 root root 4096 Feb 16 2010 srv

drwxr-xr-x 13 root root 0 Jun 26 07:17 sys

drwxr-xr-x 3 root root 4096 Jun 19 10:31 tftpboot

drwxrwxrwt 8 root root 4096 Jun 26 07:19 tmp

drwxr-xr-x 15 root root 4096 Jun 19 10:26 usr

drwxr-xr-x 21 root root 4096 Jun 19 10:37 var

[root@localhost /]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/mapper/VolGroup00-LogVol00

12G 8.7G 2.6G 78% /

/dev/sda1 99M 24M 71M 25% /boot

tmpfs 244M 0 244M 0% /dev/shm

/dev/mapper/12c-12clv

15G 166M 14G 2% /12c

[root@localhost /]# cd /12c

[root@localhost 12c]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/mapper/VolGroup00-LogVol00

12G 8.7G 2.6G 78% /

/dev/sda1 99M 24M 71M 25% /boot

tmpfs 244M 0 244M 0% /dev/shm

/dev/mapper/12c-12clv

15G 166M 14G 2% /12c

[root@localhost 12c]#

到此成功添加一块硬盘，并建立文件系统

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