How to expand CentOS Linux release 7 disk capacity
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-
