
正文
linux大于2T的磁盘格式化
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fdisk默认只能格式小于2T的磁盘,我们经常会碰到大于2T的磁盘,我们不能fdisk 格式化。
我们得用parted 来的格式化
parted 命令可能没有,yum install -y parted
真实例子:
[root@ES-TY01 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sdb : .1T disk
└─sdb1 : .1T part
sdc : .1T disk
└─sdc1 : .1T part
sdf : .1T disk
└─sdf1 : .1T part
sde : .1T disk
└─sde1 : .1T part
sdg : .1T disk
└─sdg1 : .1T part
sda : .6G disk
├─sda1 : 700M part /boot/efi
├─sda2 : 100M part
├─sda3 : 2G part
├─sda4 : 500M part /boot
└─sda5 : .4G part
├─VolGroup-lv_root (dm-) : 50G lvm /
├─VolGroup-lv_swap (dm-) : 4G lvm [SWAP]
└─VolGroup-lv_home (dm-) : .4G lvm /home
sdh : .1T disk
└─sdh1 : .1T part
sdd : .1T disk
sdi : .1T disk
└─sdi1 : .1T part
sdj : .1T disk
└─sdj1 : .1T part
sdk : .1T disk
└─sdk1 : .1T part
sdl : .1T disk
└─sdl1 : .1T part
sdm : .1T disk
└─sdm1 : .1T part
我们看到sdd还没格式化:
[root@ES-TY01 ~]# parted /dev/sdd
GNU Parted 2.1
Using /dev/sdd
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p
Model: DELL PERC H730P Mini (scsi)
Disk /dev/sdd: 10.0TB
Sector size (logical/physical): 512B/4096B
Partition Table: gptNumber Start End Size File system Name Flags(parted) mkpart
Partition name? []? sdd1
File system type? [ext2]? ext4
Start?
End? .0TB
Warning: The resulting partition is not properly aligned for best performance.
Ignore/Cancel? Ignore
(parted) p
Model: DELL PERC H730P Mini (scsi)
Disk /dev/sdd: .0TB
Sector size (logical/physical): 512B/4096B
Partition Table: gptNumber Start End Size File system Name Flags
.4kB .0TB .0TB sdd1(parted) quit
Information: You may need to update /etc/fstab.
[root@ES-TY02 ~]# mkfs.ext4 /dev/sde1
mke2fs 1.41. (-May-)
/dev/sde1 alignment is offset by bytes.
This may result in very poor performance, (re)-partitioning suggested.
Filesystem label=
OS type: Linux
Block size= (log=)
Fragment size= (log=)
Stride= blocks, Stripe width= blocks
inodes, blocks
blocks (5.00%) reserved for the super user
First data block=
Maximum filesystem blocks=
block groups
blocks per group, fragments per group
inodes per group
Superblock backups stored on blocks:
, , , , , , , , ,
, , , , , , ,
, , , , , Writing inode tables: done
Creating journal ( blocks): done
Writing superblocks and filesystem accounting information: doneThis filesystem will be automatically checked every mounts or
days, whichever comes first. Use tune2fs -c or -i to override.
一个10T的磁盘,最终大小的SIZE 大约是9T,Avail SIZE 是8.5T,所以相当于损失1.5T,可用率是85%。
[root@hdp08 ~]# df -Th
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root
ext4 50G .5G 41G % /
tmpfs tmpfs 127G 36K 127G % /dev/shm
/dev/sda4 ext4 477M 40M 413M % /boot
/dev/sda1 vfat 696M 304K 696M % /boot/efi
/dev/mapper/VolGroup-lv_home
ext4 384G 67M 364G % /home
/dev/sdb1 ext4 9.0T 29G 8.5T % /cloud/data01
/dev/sdc1 ext4 .0T 29G .5T % /cloud/data02
/dev/sdd1 ext4 .0T 30G .5T % /cloud/data03
/dev/sde1 ext4 .0T 28G .5T % /cloud/data04
/dev/sdf1 ext4 .0T 32G .5T % /cloud/data05
/dev/sdg1 ext4 .0T 32G .5T % /cloud/data06
/dev/sdh1 ext4 .0T 32G .5T % /cloud/data07
/dev/sdi1 ext4 .0T 32G .5T % /cloud/data08
/dev/sdj1 ext4 .0T 33G .5T % /cloud/data09
/dev/sdk1 ext4 .0T 30G .5T % /cloud/data10
/dev/sdl1 ext4 .0T 26G .5T % /cloud/data11
/dev/sdm1 ext4 .0T 28G .5T % /cloud/data12







