parted

Disk partitioning and partition resizing tools

Supplementary instructions

parted command is a powerful disk partitioning and partition resizing tool developed by the GNU organization. Unlike fdisk, it supports resizing partitions. As a tool designed for Linux, it is not built to handle the multiple partition types associated with fdisk, however, it can handle the most common partition formats including: ext2, ext3, fat16, fat32, NTFS, ReiserFS, JFS , XFS, UFS, HFS and Linux swap partitions.

grammar

parted(option)(parameter)

Options

-h: Display help information;
-i: interactive mode;
-s: Script mode, do not prompt the user;
-v: Display version number.

Parameters

• Device: Specify the device file corresponding to the hard disk to be partitioned;
• Command: the parted command to be executed.

Example

Since the emergence of serial technology, more and more users have chosen to use large-capacity SATA hard drives to create disk arrays; especially MD1000/MD3000, which can easily exceed the 2T LUN, so here are some guidelines for you.

Red Hat Enterprise Linux 4 Update 4 provides support for disk devices larger than 2 terabytes (TB).

Please refer to the following steps:

Note:

• Green represents the command you need to use.
• Red represents the output information that you need to pay attention to and will need to use it later.

[root@localhost ~]# fdisk -l
Disk /dev/sda: 35.8 GB, 35862976512 bytes
255 heads, 63 sectors/track, 4360 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
    Device Boot Start End Blocks id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 144 1052257+ 82 Linux swap
/dev/sda3 145 4360 33865020 83 Linux
Disk /dev/sdb: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdb doesn't contain a valid partition table

[root@localhost ~]# parted /dev/sdb
GNU Parted Copyright (C) 1998 - 2004 free Software Foundation, Inc.
This program is free software, covered by the GNU General Public License.
This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
Use /dev/sdb
(parted)mklabel gpt
(parted)print
Disk geometry of /dev/sdb: 0.000-2048.000 megabytes
Disk label type: gpt
Minor starting point ending point file system name flag
(parted)mkpart primary 0 2048 <-----The number shown in the print above
(parted)print
Disk geometry of /dev/sdb: 0.000-2048.000 megabytes
Disk label type: gpt
Minor starting point ending point file system name flag
1 0.017 2047.983
(parted)quit

Don't forget to update /etc/fstab if necessary.

[root@localhost ~]# fdisk -l
Disk /dev/sda: 35.8 GB, 35862976512 bytes
255 heads, 63 sectors/track, 4360 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
    Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 144 1052257+ 82 Linux swap
/dev/sda3 145 4360 33865020 83 Linux
WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.

Disk /dev/sdb: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
    Device Boot Start End Blocks Id System
/dev/sdb1 1 262 2097151+ee EFI GPT
Partition 1 has different physical/logical beginnings (non-Linux?):
      phys=(0, 0, 1) logical=(0,0, 2)
Partition 1 has different physical/logical endings:
      phys=(1023, 254, 63) logical=(261, 21, 16)

[root@localhost ~]# mkfs.ext3 /dev/sdb1
mke2fs 1.35 (28-Feb-2004)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
262144 inodes, 524279 blocks
26213 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=536870912
16 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks:
         32768, 98304, 163840, 229376, 294912
Writing inode tables: done
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 28 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.

[root@localhost ~]# mount /dev/sdb1 /mnt
[root@localhost ~]# df -h
Filesystem Capacity Used Available % Used Mount Point
/dev/sda3 <?xml:namespace prefix = st1 />32G 2.6G 28G 9% /
/dev/sda1 99M 12M 82M 13% /boot
none 252M 0 252M 0% /dev/shm
/dev/sdb1 2.0G 36M 1.9G 2% /mnt