现在的硬盘很多都大于2T，但是linux自带的fdisk 工具无法格式化大于2T的磁盘，需要使用第三方工具parted,我们来看如何使用parted格式硬盘
1，可以先使用fdisk -l查看系统当前的硬盘，可以看到该系统中挂载了1个12T的硬盘，分别是/dev/sdb
[root@test-01 /]# fdisk -l Disk /dev/sda: 299.4 GB, 299439751168 bytes, 584843264 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk label type: dos Disk identifier: 0x000b73fd Device Boot Start End Blocks Id System /dev/sda1 * 2048 2099199 1048576 83 Linux /dev/sda2 2099200 584843263 291372032 8e Linux LVM Disk /dev/sdb: 12000.7 GB, 12000675495936 bytes, 23438819328 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes
其他 省略。。。。
2，开始格式化，执行命令parted /dev/sdb 是需要格式化的磁盘，这里一定要注意别选择错了，否则数据会丢失。
#print #查看下实际可使用磁盘空间数
[root@test-01 /]# parted /dev/sdb GNU Parted 3.1 Using /dev/sdb Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) print Error: /dev/sdb: unrecognised disk label Model: DELL PERC H730 Mini (scsi) Disk /dev/sdb: 12.0TB Sector size (logical/physical): 512B/512B Partition Table: unknown Disk Flags:
#mklabel gpt #将MBR磁盘转换为GPT
#print #查看下实际可使用磁盘空间数
(parted) mklabel gpt (parted) print Model: DELL PERC H730 Mini (scsi) Disk /dev/sdb: 12.0TB Sector size (logical/physical): 512B/512B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags
#mkpart primary 0 12.0TB #创建主分区，空间为从0 gb到12.0TB全部空间
#print #打印当前分区情况
(parted) mkpart primay 0 12.0TB Warning: The resulting partition is not properly aligned for best performance. Ignore/Cancel? Ignore (parted) print Model: DELL PERC H730 Mini (scsi) Disk /dev/sdb: 12.0TB Sector size (logical/physical): 512B/512B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 17.4kB 12.0TB 12.0TB primay (parted) quit Information: You may need to update /etc/fstab.
#quit #退出parted工具
至此，格式化大于2T硬盘成功完成，后面可以继续格式化磁盘，挂载磁盘
#mkfs.ext4 /dev/sdb1 格式化磁盘
[root@test-01 /]# fdisk -l Disk /dev/sda: 299.4 GB, 299439751168 bytes, 584843264 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk label type: dos Disk identifier: 0x000b73fd Device Boot Start End Blocks Id System /dev/sda1 * 2048 2099199 1048576 83 Linux /dev/sda2 2099200 584843263 291372032 8e Linux LVM WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion. Disk /dev/sdb: 12000.7 GB, 12000675495936 bytes, 23438819328 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk label type: gpt Disk identifier: 91AD0A00-FD37-4A33-8E6A-B8477287685C [root@test-01 /]# mkfs.ext4 /dev/sdb1 mke2fs 1.42.9 (28-Dec-2013) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 366231552 inodes, 2929852407 blocks 146492620 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=4294967296 89412 block groups 32768 blocks per group, 32768 fragments per group 4096 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 102400000, 214990848, 512000000, 550731776, 644972544, 1934917632, 2560000000 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done
#mount /dev/sdb1 /data 挂载磁盘到/data目录
mount /dev/sdb1 /data
#将/dev/sdb1开机自动挂载到/data1目录
echo '/dev/sdb1 /data ext4 defaults 0 0' >> /etc/fstab