How to use virt-sparsify to reclaim unused disk space from qcow2 VM images.

How to rename Logical Volumes (LV) and Volume Groups (VG) in LVM on Linux.

By default on Linux machines CFQ I/O scheduler is used. For virtualization like KVM, VMware it needs to have optimized throughput using deadline or noop scheduler.

On libvirt default storage pool is created called default, default pool will be defined to use location /var/lib/libvirt/images for file based volumes.

Libvirtd by default has a storage pool called default, we can create additional storage pools from a simple XML file.

With standard partition layout we can have maximum 4 primary partitions (considering MBR). With LVM we can create number of partitions.

NFS (network file storage) can be used to share files on Linux, used for Linux diskless installation, good solution to share huge amount of data.