Увеличение LVM раздела для OS CentOS

[root@centos-vm ~]# fdisk /dev/sda
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.

Command (m for help): p

Disk /dev/sda: 53.7 GB, 53687091200 bytes, 104857600 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: 0x000ae3ad

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 20971519 9436160 8e Linux LVM

Command (m for help): n
Partition type:
p primary (2 primary, 0 extended, 2 free)
e extended
Select (default p): p
Partition number (3,4, default 3):
First sector (20971520-104857599, default 20971520):
Using default value 20971520
Last sector, +sectors or +size{K,M,G} (20971520-104857599, default 104857599):
Using default value 104857599
Partition 3 of type Linux and of size 40 GiB is set

Command (m for help): t
Partition number (1-3, default 3):
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'

Command (m for help): p

Disk /dev/sda: 53.7 GB, 53687091200 bytes, 104857600 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: 0x000ae3ad

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 20971519 9436160 8e Linux LVM
/dev/sda3 20971520 104857599 41943040 8e Linux LVM

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.

WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
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)
Syncing disks.

[root@centos-vm ~]# fdisk -l

Disk /dev/sda: 53.7 GB, 53687091200 bytes, 104857600 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: 0x000ae3ad

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 20971519 9436160 8e Linux LVM
/dev/sda3 20971520 104857599 41943040 8e Linux LVM

Disk /dev/mapper/cl-root: 8585 MB, 8585740288 bytes, 16769024 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 /dev/mapper/cl-swap: 1073 MB, 1073741824 bytes, 2097152 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

[root@centos-vm ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/cl-root 8.0G 1.2G 6.9G 15% /
devtmpfs 906M 0 906M 0% /dev
tmpfs 916M 0 916M 0% /dev/shm
tmpfs 916M 8.5M 908M 1% /run
tmpfs 916M 0 916M 0% /sys/fs/cgroup
/dev/sda1 1014M 138M 877M 14% /boot
tmpfs 184M 0 184M 0% /run/user/0
[root@centos-vm ~]# vgdisplay
--- Volume group ---
VG Name cl
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 1
Act PV 1
VG Size 9.00 GiB
PE Size 4.00 MiB
Total PE 2303
Alloc PE / Size 2303 / 9.00 GiB
Free PE / Size 0 / 0
VG UUID WXAeXq-GrUz-4R1B-tn0b-vkk1-ZbjA-UaNUqF

[root@centos-vm ~]# vgextend cl /dev/sda3
Volume group "cl" successfully extended
[root@centos-vm ~]# pvscan
PV /dev/sda2 VG cl lvm2 [9.00 GiB / 0 free]
PV /dev/sda3 VG cl lvm2 [40.00 GiB / 40.00 GiB free]
Total: 2 [48.99 GiB] / in use: 2 [48.99 GiB] / in no VG: 0 [0 ]
[root@centos-vm ~]# lvdisplay
--- Logical volume ---
LV Path /dev/cl/swap
LV Name swap
VG Name cl
LV UUID wBczTI-WAlw-Unoj-PYsp-Kc15-WCTN-7cMMwL
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2017-08-14 09:00:36 +0300
LV Status available
# open 2
LV Size 1.00 GiB
Current LE 256
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:1

--- Logical volume ---
LV Path /dev/cl/root
LV Name root
VG Name cl
LV UUID vnVoAA-SmHx-UUAv-35dL-FlL1-vMdz-Su2iCW
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2017-08-14 09:00:36 +0300
LV Status available
# open 1
LV Size 8.00 GiB
Current LE 2047
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:0

[root@centos-vm ~]# lvextend -l+100%FREE /dev/cl/root
Size of logical volume cl/root changed from 8.00 GiB (2047 extents) to 47.99 GiB (12286 extents).
Logical volume cl/root successfully resized.
[root@centos-vm ~]# vgscan
Reading volume groups from cache.
Found volume group "cl" using metadata type lvm2
[root@centos-vm ~]# vgchange -ay
2 logical volume(s) in volume group "cl" now active
[root@centos-vm ~]# xfs_growfs /dev/cl/root
meta-data=/dev/mapper/cl-root isize=512 agcount=4, agsize=524032 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=2096128, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 2096128 to 12580864
[root@centos-vm ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/cl-root 48G 1.2G 47G 3% /
devtmpfs 906M 0 906M 0% /dev
tmpfs 916M 0 916M 0% /dev/shm
tmpfs 916M 8.5M 908M 1% /run
tmpfs 916M 0 916M 0% /sys/fs/cgroup
/dev/sda1 1014M 138M 877M 14% /boot
tmpfs 184M 0 184M 0% /run/user/0