Shulou(Shulou.com)06/01 Report--

This article is about how to carry out CentOS Linux release 7 disk expansion, the editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article.

[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 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 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 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 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 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 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 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 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 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 muri-

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