Linux Creating a Partition Size Larger than 2TB

jsjzhang

Linux desktop user generally uses small hard disk and partition, but
on server you need a large partition. For example, you cannot create
4TB partition size (RAID based) using fdisk command. It will not allow
you to create a partition that is greater than 2TB.
To solve this problem use GNU parted command with GPT. It supports
Intel EFI/GPT partition tables. Partition Table (GPT) is a standard for
the layout of the partition table on a physical hard disk. It is a part
of the Extensible Firmware Interface (EFI) standard proposed by Intel
as a replacement for the outdated PC BIOS, one of the few remaining
relics of the original IBM PC. EFI uses GPT where BIOS uses a Master
Boot Record (MBR).

(Diagram illustrating the layout of the GUID Partition Table scheme.
Each logical block (LBA) is 512 bytes in size. LBA addresses that are
negative indicate position from the end of the volume, with −1 being
the last addressable block. Imaged Credit
Wikipedia
)
GPT Kernel Support
EFI GUID Partition support  works on both 32bit and 64bit platforms.  You must include GPT support in kernel
in order to use GPT. If you don't include GPT support in Linux kernelt,
after rebooting the server, the file system will no longer be mountable
or the GPT table will get corrupted. By default Redhat Enterprise Linux
/ CentOS comes with GPT kernel support. However, if you are using
Debian or Ubuntu Linux, you need to recompile the kernel. Set CONFIG_EFI_PARTITION to y to compile this feature.
File Systems
   Partition Types
     

Advanced partition selection
     

EFI GUID Partition support (NEW)
....
Linux create 3TB partition size
One of my clients has Raid 5 Array -7x500GB hard disks to store large data. To create partition start GNU parted as follows:
# parted /dev/sdx
Output:
GNU Parted 1.8.1
Using /dev/sdx
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted)
Creates a new GPT disklabel i.e. partition table:
mklabel gpt
Create 3TB partition size:
mkpart primary 0 3001G
Quit and save the changes:
quit
Use mkfs to format file system:
# mkfs.ext3 /dev/sdx1
Note: Replace /dev/sdx with actual RAID or disk name or block
Ethernet device such as /dev/etherd/e0.0 . Don't forget to update
/etc/fstab, if necessary.
来源:http://www.cyberciti.biz/tips/fdisk-unable-to-create-partition-greater-2tb.html


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