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linuxkathirvel/lvm-management.md

Last active June 22, 2018 07:41
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lvm-management.md

LVM Management in GNU/Linux

Create new LVM partition from unallocated space

  1. Create new partition using fdisk
  2. Change partition type using t option and put 8e to LVM type in fdisk
  3. Write the changes in disk using w option in fdisk
  4. Reboot system to commit changes
  5. Create Physical Volume using pvcreate /dev/sdaX
  6. Create Volume Group using vgcreate vgname /dev/sdaX
  7. Create Logical Volume in Volume Group using lvcreate -n datalv0 -L 30G centos-data
  8. Get create LV name using lvdisplay
  9. Format LV using mkfs.ext4 /dev/centos-data/datalv0

Mounting Logical Volumes on Boot and on Demand

  1. Create new directory mkdir /data
  2. Get UUID using blkid /dev/centos-data/datalv0
  3. Append UUID=3f33f393-8b09-48e0-8a7e-5e06d90f7781 /data ext4 defaults 0 0 in /etc/fstab file to mount in boot time
  4. mount -a to Mount all filesystems (of the given types) mentioned in /etc/fstab file
  5. Give the prior permissions to mount point
  6. Done
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