Увеличение дискового пространства в Centos 7

fdisk -l

[test@test ~]# fdisk -l

Disk /dev/sdb: 107.4 GB, 107374182400 bytes, 209715200 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: 0xc0c9f529

Устр-во Загр     Начало       Конец       Блоки   Id  Система
/dev/sdb1            2048   209715199   104856576   83  Linux

Disk /dev/sda: 80.5 GB, 80530636800 bytes, 157286400 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00000000

Устр-во Загр     Начало       Конец       Блоки   Id  Система
/dev/sda1               1   146800639    73400319+  ee  GPT
Partition 1 does not start on physical sector boundary.

Disk /dev/mapper/centos-root: 47.2 GB, 47169142784 bytes, 92127232 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/mapper/centos-swap: 4160 MB, 4160749568 bytes, 8126464 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/mapper/centos-home: 23.0 GB, 23026728960 bytes, 44974080 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes

[test@test ~]# lsblk
NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda               8:0    0   75G  0 disk
├─sda1            8:1    0  200M  0 part /boot/efi
├─sda2            8:2    0  500M  0 part /boot
└─sda3            8:3    0 69,3G  0 part
  ├─centos-root 253:0    0   44G  0 lvm  /
  ├─centos-swap 253:1    0  3,9G  0 lvm  [SWAP]
  └─centos-home 253:2    0 21,5G  0 lvm  /home
sdb               8:16   0  100G  0 disk
└─sdb1            8:17   0  100G  0 part /mnt/hdd
sr0              11:0    1 1024M  0 rom
[test@test ~]# fdisk /dev/sda

The device presents a logical sector size that is smaller than
the physical sector size. Aligning to a physical sector (or optimal
I/O) size boundary is recommended, or performance may be impacted.
Welcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.


Команда (m для справки): p

Disk /dev/sda: 80.5 GB, 80530636800 bytes, 157286400 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00000000

Устр-во Загр     Начало       Конец       Блоки   Id  Система
/dev/sda1               1   146800639    73400319+  ee  GPT
Partition 1 does not start on physical sector boundary.

Команда (m для справки): d
Selected partition 1
Partition 1 is deleted

Команда (m для справки): p

Disk /dev/sda: 80.5 GB, 80530636800 bytes, 157286400 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00000000

Устр-во Загр     Начало       Конец       Блоки   Id  Система

Команда (m для справки): n
Partition type:
   p   primary (0 primary, 0 extended, 4 free)
   e   extended
Select (default p): p
Номер раздела (1-4, default 1):
Первый sector (2048-157286399, по умолчанию 2048):
Используется значение по умолчанию 2048
Last sector, +sectors or +size{K,M,G} (2048-157286399, по умолчанию 157286399):
Используется значение по умолчанию 157286399
Partition 1 of type Linux and of size 75 GiB is set

Команда (m для справки): p

Disk /dev/sda: 80.5 GB, 80530636800 bytes, 157286400 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00000000

Устр-во Загр     Начало       Конец       Блоки   Id  Система
/dev/sda1            2048   157286399    78642176   83  Linux

Команда (m для справки): w
Таблица разделов была изменена!

Вызывается ioctl() для перечитывания таблицы разделов.

WARNING: Re-reading the partition table failed with error 16: Устройство или ресурс занято.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
Синхронизируются диски.
[test@test ~]#