怎样进行CentOS Linux release 7磁盘扩容

本篇文章给大家分享的是有关怎样进行CentOS Linux release 7磁盘扩容，小编觉得挺实用的，因此分享给大家学习，希望大家阅读完这篇文章后可以有所收获，话不多说，跟着小编一起来看看吧。

[root@Userv-a cl]# cat /etc/redhat-release

CentOS Linux release 7.5.1804 (Core)

[root@Userv-a cl]#

[root@Userv-a ~]# fdisk -l

Disk /dev/sda: 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: 0x000a70d7

Device Boot Start End Blocks Id System

/dev/sda1 * 2048 2099199 1048576 83 Linux

/dev/sda2 2099200 209715199 103808000 8e Linux LVM

Disk /dev/mapper/cl-root: 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 /dev/mapper/cl-swap: 8455 MB, 8455716864 bytes, 16515072 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-home: 44.1 GB, 44149243904 bytes, 86228992 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@Userv-a ~]# echo "- - -" > /sys/class/scsi_host/host0/scan

[root@Userv-a ~]# fdisk -l

Disk /dev/sda: 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: 0x000a70d7

Device Boot Start End Blocks Id System

/dev/sda1 * 2048 2099199 1048576 83 Linux

/dev/sda2 2099200 209715199 103808000 8e Linux LVM

Disk /dev/mapper/cl-root: 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 /dev/mapper/cl-swap: 8455 MB, 8455716864 bytes, 16515072 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-home: 44.1 GB, 44149243904 bytes, 86228992 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/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

[root@Userv-a ~]# pvcreate /dev/sdb

Physical volume "/dev/sdb" successfully created.

[root@Userv-a ~]# pvs

PV VG Fmt Attr PSize PFree

/dev/sda2 cl lvm2 a-- <99.00g 4.00m

/dev/sdb lvm2 --- 100.00g 100.00g

[root@Userv-a ~]# vgextend cl /dev/sdb

Volume group "cl" successfully extended

[root@Userv-a ~]# vgs

VG #PV #LV #SN Attr VSize VFree

cl 2 3 0 wz--n- 198.99g 100.00g

[root@Userv-a ~]# pvs

PV VG Fmt Attr PSize PFree

/dev/sda2 cl lvm2 a-- <99.00g 4.00m

/dev/sdb cl lvm2 a-- <100.00g <100.00g

[root@Userv-a ~]# cd /dev

[root@Userv-a dev]# ls

agpgart cpu fd0 loop-control oldmem sda1 stderr tty14 tty23 tty32 tty41 tty50 tty6 ttyS2 vcs4 vfio

autofs cpu_dma_latency full mapper port sda2 stdin tty15 tty24 tty33 tty42 tty51 tty60 ttyS3 vcs5 vga_arbiter

block crash fuse mcelog ppp sdb stdout tty16 tty25 tty34 tty43 tty52 tty61 uhid vcs6 vhci

bsg disk hpet mem ptmx sg0 tty tty17 tty26 tty35 tty44 tty53 tty62 uinput vcsa vhost-net

btrfs-control dm-0 hugepages mqueue pts sg1 tty0 tty18 tty27 tty36 tty45 tty54 tty63 urandom vcsa1 vmci

cdrom dm-1 hwrng net random sg2 tty1 tty19 tty28 tty37 tty46 tty55 tty7 usbmon0 vcsa2 vsock

char dm-2 initctl network_latency raw shm tty10 tty2 tty29 tty38 tty47 tty56 tty8 vcs vcsa3 zero

cl dri input network_throughput rtc snapshot tty11 tty20 tty3 tty39 tty48 tty57 tty9 vcs1 vcsa4

console fb0 kmsg null rtc0 snd tty12 tty21 tty30 tty4 tty49 tty58 ttyS0 vcs2 vcsa5

core fd log nvram sda sr0 tty13 tty22 tty31 tty40 tty5 tty59 ttyS1 vcs3 vcsa6

[root@Userv-a dev]# cd cl

[root@Userv-a cl]# ls

home root swap

[root@Userv-a cl]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/mapper/cl-root 50G 45G 5.7G 89% /

devtmpfs 3.9G 0 3.9G 0% /dev

tmpfs 3.9G 0 3.9G 0% /dev/shm

tmpfs 3.9G 137M 3.7G 4% /run

tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup

/dev/sda1 1014M 179M 836M 18% /boot

/dev/mapper/cl-home 42G 682M 41G 2% /home

tmpfs 783M 0 783M 0% /run/user/0

[root@Userv-a cl]#

[root@Userv-a cl]# lvextend -L 80g /dev/cl/root

Size of logical volume cl/root changed from 50.00 GiB (12800 extents) to 80.00 GiB (20480 extents).

Logical volume cl/root successfully resized.

[root@Userv-a cl]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/mapper/cl-root 50G 45G 5.7G 89% /

devtmpfs 3.9G 0 3.9G 0% /dev

tmpfs 3.9G 0 3.9G 0% /dev/shm

tmpfs 3.9G 137M 3.7G 4% /run

tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup

/dev/sda1 1014M 179M 836M 18% /boot

/dev/mapper/cl-home 42G 682M 41G 2% /home

tmpfs 783M 0 783M 0% /run/user/0

[root@Userv-a cl]# xfs_growfs /dev/cl/root

meta-data=/dev/mapper/cl-root isize=512 agcount=4, agsize=3276800 blks

= sectsz=512 attr=2, projid32bit=1

= crc=1 finobt=0 spinodes=0

data = bsize=4096 blocks=13107200, imaxpct=25

= sunit=0 swidth=0 blks

naming =version 2 bsize=4096 ascii-ci=0 ftype=1

log =internal bsize=4096 blocks=6400, version=2

= sectsz=512 sunit=0 blks, lazy-count=1

realtime =none extsz=4096 blocks=0, rtextents=0

data blocks changed from 13107200 to 20971520

[root@Userv-a cl]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/mapper/cl-root 80G 45G 36G 56% /

devtmpfs 3.9G 0 3.9G 0% /dev

tmpfs 3.9G 0 3.9G 0% /dev/shm

tmpfs 3.9G 137M 3.7G 4% /run

tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup

/dev/sda1 1014M 179M 836M 18% /boot

/dev/mapper/cl-home 42G 682M 41G 2% /home

tmpfs 783M 0 783M 0% /run/user/0

[root@Userv-a cl]#

以上就是怎样进行CentOS Linux release 7磁盘扩容，小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注行业资讯频道。