fdisk 添加逻辑分区

[root@riyimei ~]# fdisk /dev/sdb

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): 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): p

Disk /dev/sdb: 214.7 GB, 214748364800 bytes

255 heads, 63 sectors/track, 26108 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: 0xe8add119

   Device Boot      Start         End      Blocks   Id  System

Command (m for help): n

Command action

   e   extended

   p   primary partition (1-4)

p

Partition number (1-4): 1

First cylinder (1-26108, default 1): 

Using default value 1

Last cylinder, +cylinders or +size{K,M,G} (1-26108, default 26108): +10G

Command (m for help): P

Disk /dev/sdb: 214.7 GB, 214748364800 bytes

255 heads, 63 sectors/track, 26108 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: 0xe8add119

   Device Boot      Start         End      Blocks   Id  System

/dev/sdb1               1        1306    10490413+  83  Linux

Command (m for help): n

Command action

   e   extended

   p   primary partition (1-4)

e

Partition number (1-4): 2

First cylinder (1307-26108, default 1307): 

Using default value 1307

Last cylinder, +cylinders or +size{K,M,G} (1307-26108, default 26108): +20G

Command (m for help): P

Disk /dev/sdb: 214.7 GB, 214748364800 bytes

255 heads, 63 sectors/track, 26108 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: 0xe8add119

   Device Boot      Start         End      Blocks   Id  System

/dev/sdb1               1        1306    10490413+  83  Linux

/dev/sdb2            1307        3918    20980890    5  Extended

Command (m for help): n

Command action

   l   logical (5 or over)

   p   primary partition (1-4)

l

First cylinder (1307-3918, default 1307): 

Using default value 1307

Last cylinder, +cylinders or +size{K,M,G} (1307-3918, default 3918): 

Using default value 3918

Command (m for help): P

Disk /dev/sdb: 214.7 GB, 214748364800 bytes

255 heads, 63 sectors/track, 26108 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: 0xe8add119

   Device Boot      Start         End      Blocks   Id  System

/dev/sdb1               1        1306    10490413+  83  Linux

/dev/sdb2            1307        3918    20980890    5  Extended

/dev/sdb5            1307        3918    20980858+  83  Linux

Command (m for help): W

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

[root@riyimei ~]# lsblk 

NAME                          MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT

sda                             8:0    0   50G  0 disk 

├─sda1                          8:1    0  512M  0 part /boot

└─sda2                          8:2    0 49.5G  0 part 

  ├─vg_riyimei-swap_lv (dm-0) 253:0    0    4G  0 lvm  [SWAP]

  ├─vg_riyimei-root_lv (dm-1) 253:1    0   10G  0 lvm  /

  ├─vg_riyimei-usr_lv (dm-2)  253:2    0   10G  0 lvm  /usr

  ├─vg_riyimei-var_lv (dm-3)  253:3    0   10G  0 lvm  /var

  ├─vg_riyimei-home_lv (dm-4) 253:4    0    4G  0 lvm  /home

  ├─vg_riyimei-tmp_lv (dm-5)  253:5    0    1G  0 lvm  /tmp

  └─vg_riyimei-opt_lv (dm-6)  253:6    0   10G  0 lvm  /opt

sr0                            11:0    1 55.2M  0 rom  

sdb                             8:16   0  200G  0 disk 

├─sdb1                          8:17   0   10G  0 part 

├─sdb2                          8:18   0    1K  0 part 

└─sdb5                          8:21   0   20G  0 part 

[root@riyimei ~]#