Linux Disk partitioning

To create an extended partition:
[Email protected] init.d]# Fdisk/dev/sdb

Warning:dos-compatible mode is deprecated. It ' s stronglyrecommended to

Switch off the mode (command ' C ') and change display units to
Sectors (Command ' u ').

Command (M for help):
Command (M for help): P

disk/dev/sdb:5368 MB, 5368709120 bytes
255 heads, Sectors/track, 652 cylinders
Units = Cylinders of 16065 * 8225280 bytes
Sector size (logical/physical): bytes/512 bytes
I/O size (minimum/optimal): bytes/512 bytes
Disk Identifier:0x3c8b5df6

Deviceboot Start End Blocks Id System

Command (M for help): N
Command Action
E Extended
P primary partition (1-4)
E
Partition number (1-4): 1
First cylinder (1-652, default 1):
Using Default value 1
Last cylinder, +cylinders or +size{k,m,g} (1-652, default652):
Using Default value 652

Command (M for help): P

disk/dev/sdb:5368 MB, 5368709120 bytes
255 heads, Sectors/track, 652 cylinders
Units = Cylinders of 16065 * 8225280 bytes
Sector size (logical/physical): bytes/512 bytes
I/O size (minimum/optimal): bytes/512 bytes
Disk Identifier:0x3c8b5df6

Deviceboot Start End Blocks Id System
/DEV/SDB1 1 652 5237158+ 5 Extended

Command (M for help): W
The partition table has been altered!

Calling IOCTL () to re-read partition table.
Syncing disks.
[Email protected] init.d]#

formatting:
Problem, the extended partition cannot be formatted and needs to be formatted after the logical partition is created
[Email protected] init.d]# mkfs-t EXT3/DEV/SDB1
MKE2FS 1.41.12 (17-may-2010)
Mkfs.ext3:inode_size (+) * Inodes_count (0) too big for a
FileSystem with 0 blocks, specify higher inode_ratio (-i)
or lower inode count (-N).

[Email protected] init.d]#

To create a logical partition:
1. View partition information
[Email protected] init.d]# fdisk-l

disk/dev/sda:26.8 GB, 26843545600 bytes
255 heads, Sectors/track, 3263 cylinders
Units = Cylinders of 16065 * 8225280 bytes
Sector size (logical/physical): bytes/512 bytes
I/O size (minimum/optimal): bytes/512 bytes
Disk identifier:0x00062b86

Deviceboot Start End Blocks Id System
/DEV/SDA1 * 1 512000 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 3264 25701376 8e Linux LVM

Disk/dev/sdb: 5368 mb,5368709120 bytes
255 heads, Sectors/track, 652 cylinders
Units = Cylinders of 16065 * 8225280 bytes
Sector size (logical/physical): bytes/512 bytes
I/O size (minimum/optimal): bytes/512 bytes
Disk Identifier:0x3c8b5df6

Deviceboot Start End Blocks Id System
/DEV/SDB11 652 5237158+ 5 Extended

disk/dev/mapper/vg_qing-lv_root:24.2 GB, 24234688512 bytes
255 heads, Sectors/track, 2946 cylinders
Units = Cylinders of 16065 * 8225280 bytes
Sector size (logical/physical): bytes/512 bytes
I/O size (minimum/optimal): bytes/512 bytes
Disk identifier:0x00000000

Disk/dev/mapper/vg_qing-lv_root doesn ' t contain a valid partitiontable

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

Disk/dev/mapper/vg_qing-lv_swap doesn ' t contain a valid partitiontable
2. Start creating logical Partitions
[Email protected] init.d]# Fdisk/dev/sdb

Warning:dos-compatible mode is deprecated. It ' s stronglyrecommended to
Switch off the mode (command ' C ') and change display units to
Sectors (Command ' u ').

Command (M for help):
Command (M for help): N
Command Action
L logical (5 or over)
P primary partition (1-4)
L
First cylinder (1-652, default 1):
Using Default value 1
Last cylinder, +cylinders or +size{k,m,g} (1-652, default652):
Using Default value 652

Command (M for help): W
The partition table has been altered!

Calling IOCTL () to re-read partition table.
Syncing disks.
[Email protected] init.d]#
3. View the logical partitions created
[Email protected] init.d]# fdisk-l

disk/dev/sda:26.8 GB, 26843545600 bytes
255 heads, Sectors/track, 3263 cylinders
Units = Cylinders of 16065 * 8225280 bytes
Sector size (logical/physical): bytes/512 bytes
I/O size (minimum/optimal): bytes/512 bytes
Disk identifier:0x00062b86

Deviceboot Start End Blocks Id System
/DEV/SDA1 * 1 512000 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 3264 25701376 8e Linux LVM

disk/dev/sdb:5368 MB, 5368709120 bytes
255 heads, Sectors/track, 652 cylinders
Units = Cylinders of 16065 * 8225280 bytes
Sector size (logical/physical): bytes/512 bytes
I/O size (minimum/optimal): bytes/512 bytes
Disk Identifier:0x3c8b5df6

Deviceboot Start End Blocks Id System
/DEV/SDB1 1 652 5237158+ 5 Extended
/DEV/SDB51 652 5237127 Linux

disk/dev/mapper/vg_qing-lv_root:24.2 GB, 24234688512 bytes
255 heads, Sectors/track, 2946 cylinders
Units = Cylinders of 16065 * 8225280 bytes
Sector size (logical/physical): bytes/512 bytes
I/O size (minimum/optimal): bytes/512 bytes
Disk identifier:0x00000000

Disk/dev/mapper/vg_qing-lv_root doesn ' t contain a valid partitiontable

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

Disk/dev/mapper/vg_qing-lv_swap doesn ' t contain a valid partitiontable
4. Format the partition
[Email protected] init.d]# mkfs-t EXT3/DEV/SDB5
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
327680 inodes, 1309281 blocks
65464 blocks (5.00%) reserved for the Super user
First Data block=0
Maximum filesystem blocks=1342177280
Groups block
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736

Writing Inode Tables:done
Creati

This article is from the "small White Nest" blog, please be sure to keep this source http://qing429.blog.51cto.com/5781009/1589353

Linux Disk partitioning