How to Create LVM Partition on CentOS 7 Using Additional Hard Disk
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 LVM Partition on CentOS7 Using Additional Hard Disk.
Step 1. Check Hard Disk Details: Run the following command to get the hard disk details:
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[[email protected] ~]# fdisk -l
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Disk /dev/sdb: 10.7 GB, 10737418240 bytes, 20971520 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
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[[email protected] ~]#
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Step 2. Create a Physical Volume: Run the following command to create a physical volume using the above hard disk:
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[[email protected] ~]# pvcreate /dev/sdb
Physical volume “/dev/sdb” successfully created.
[[email protected] ~]#
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Step 3. Create a Volume Group: Run the following command to create volume group using the above physical volumes:
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[[email protected] ~]# vgcreate vg-data /dev/sdb
Volume group “vg-data” successfully created
[[email protected] ~]#
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Step 4. Create a Logical Volume: Run the following commands to create logical volume from the above created volume group:
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[[email protected] ~]# lvcreate -n nginx-data -l +100%FREE vg-data
Logical volume “nginx-data” created.
[[email protected] ~]#
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Use -l +100%FREE option to use entire space of the volume group for a logical volume.
Step 5. Verify the Changes: Run the following command to verify the physical volume:
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[[email protected] ~]# pvs
PV VG Fmt Attr PSize PFree
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/dev/sdb vg-data lvm2 a– <
/span><10.00g 0
[[email protected] ~]#
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Run the following command to verify volume group:
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[[email protected] ~]# vgs
VG #PV #LV #SN Attr VSize VFree
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vg-data 1 1 0 wz–n- <10.00g 0
[[email protected] ~]#
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Run the following command to verify the logical volume and it will show as below:
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[[email protected] ~]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
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nginx-data vg-data -wi-a—– <10.00g
[[email protected] ~]#
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Done!!! LVM and LVM partition is created successfully and ready to use. Follow the article Howto Create and Mount a LVM Partition/Volume on CentOS 7 to create and mount the LVM partition on CentOS 7.