How to Create and Mount a LVM Partition/Volume on CentOS 7

Logical Volume Management (LVM) is an abstraction layer between operating system and physical hard drives and can be easily managed the disk space.

This article describes How to create and Mount a LVM Partition/Volume on CentOS 7.

Step 1. Check Volume Details: Run the following command to get the volume:

[root@linuxcnf ~]# lvs   LV         VG      Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert …………………………..   nginx-data vg-data -wi-a----- <10.00g [root@linuxcnf ~]#

Step 2. Create File System: Run the following command to create ext4 file system on LVM partition:

[root@linuxcnf ~]# mkfs.ext4 /dev/vg-data/nginx-data mke2fs 1.42.9 (28-Dec-2013) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 655360 inodes, 2620416 blocks 131020 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=2151677952 80 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks:         32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done [root@linuxcnf ~]#

Step 3. Mount the Volume: Run the following command to mount earlier create file system:

Run the following command to create a directory to mount the file system:

[root@linuxcnf ~]# mkdir -p /opt/nginx-www-data [root@linuxcnf ~]#

Run the following command to mount the file system:

[root@linuxcnf ~]# mount /dev/vg-data/nginx-data /opt/nginx-www-data/ [root@linuxcnf ~]#

Put the following parameters in /etc/fstab file to mount the file system across the system reboot:

[root@linuxcnf ~]# vi /etc/fstab ………………………………………………. /dev/vg-data/nginx-data /opt/nginx-www-data/    ext4    defaults        0 0 [root@linuxcnf ~]#

Step 4. Verify the Mount Point: Run the following command to verify:

[root@linuxcnf ~]# df -h Filesystem                        Size  Used Avail Use% Mounted on ……………………………. /dev/mapper/vg--data-nginx--data  9.8G   37M  9.2G   1% /opt/nginx-www-data [root@linuxcnf ~]#

Done!!! Now LVM partition is mounted and ready to use. Follow the article Howto Create LVM Partition on CentOS 7 Using Additional Hard Disk to create a LVM partition on CentOS 7 using Additional Hard Disk.