What is LVM basics in Linux?

LVM, or Logical Volume Manager, is a flexible disk management system in Linux that allows users to create, resize, and manage disk partitions more dynamically than traditional partitioning methods. LVM abstracts physical storage into logical volumes, making it easier to manage disk space on-demand.

With LVM, volumes can span across multiple physical disks, allowing for better utilization of storage resources. Users can easily increase or decrease the size of logical volumes, taking advantage of available disk space and ensuring that storage can grow with their needs.

Some key features of LVM include:

  • Dynamic resizing of partitions (logical volumes)
  • Pooling of storage resources across multiple physical disks
  • Snapshots for backups
  • Easy management of disk space

Below is a simple example of LVM commands:

# Creating Physical Volumes pvcreate /dev/sdb /dev/sdc # Creating a Volume Group vgcreate vg_data /dev/sdb /dev/sdc # Creating a Logical Volume lvcreate -n lv_storage -L 10G vg_data # To format and mount the Logical Volume mkfs.ext4 /dev/vg_data/lv_storage mount /dev/vg_data/lv_storage /mnt/storage

LVM Logical Volume Manager Linux storage management dynamic partitioning disk management

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