Linux Mounts above 2T storage

In a production environment, we will encounter disks with partitions larger than 2T (e.g. add a 3TB storage), because the MBR partition table only supports 2T disks, so a disk larger than 2T must use the GPT partition table

While Fdisk does not support GPT partitioning, we can use parted to operate on GPT disks. Parted function is very powerful, both command line can also be used for interactive, at the prompt input parted will enter the interactive mode, if there are more than one disk, we need to run select SdX (x is disk) for disk selection, can also be directly used parted/dev/ SDX specify the appropriate hard disk

To view disk information:
[Email protected] ~]# fdisk-l

disk/dev/sdm:299.4 GB, 299439751168 bytes
255 heads, Sectors/track, 36404 cylinders
Units = Cylinders of 16065 * 8225280 bytes
Sector size (logical/physical): bytes/512 bytes
I/O size (minimum/optimal): bytes/512 bytes
Disk Identifier:0x2ebc66f6

Device Boot Start End Blocks Id System
/DEV/SDM1 1 2089 16777216 for Linux Swap/solaris
/DEV/SDM2 * 2089 36405 275643392 Linux

disk/dev/sdn:3200.0 GB, 3199999672320 bytes
255 heads, Sectors/track, 389044 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

[Email protected] ~]# parted
GNU Parted 2.1
Wan-Apply/DEV/SDA
Welcome to GNU parted! Type ' help ' to view a list of commands.
(parted)

(parted) SELECT/DEV/SDN//SELECT Disk SDN
Wan-Apply/DEV/SDN

(parted) Mklabel GPT//format MBR disk as GPT

(parted) Mkpart primary 0-1//partitioning the entire disk into one partition

(parted) Quit//exit

[[email protected] ~]# MKFS.EXT4/DEV/SDN1//format
MKE2FS 1.41.12 (17-may-2010)
Discarding device blocks:20447232/454545159

[Email protected] ~]# Mkdir/io

[[email protected] ~]# Mount/dev/sdn1/io//Mount

[Email protected] ~]# BLKID/DEV/SDN1
/dev/sdn1:uuid= "5abd6300-8375-4310-b1b5-5daf8576d6ff" type= "Ext4"

[Email protected] ~]# Vi/etc/fstab

Uuid=5abd6300-8375-4310-b1b5-5daf8576d6ff/io EXT4 Defaults 1 2

[Email protected] ~]# df-h
/DEV/SDN1 2.9T 200M 2.8T 1%/io

Linux Mounts above 2T storage