Use LVM to expand system partition size

Use LVM to expand the system partition size: when the space on the server (RHEL) is insufficient, the administrator needs to allocate more (20 GB) space on the previously attached hard disk (sda ). However, the OS cannot be seen or used. Www.2cto.com process: 1. Use fdisk to create a new physical partition (sda3) for the new space in sda ). 2. Restart the server so that the system knows the partition (mkfs-t ext3 ). 3. Create a physical volume (pvcreate) and format it as ext3. Www.2cto.com 4, add to the previous logical volume group (if not, you need to create, vgcreate, vgdisplay), vgextend (lvxxxxx can view the logical volume distribution ). 5. resize the file system resize2fs. 6. df-lu: Check the system partition to confirm the expansion is successful. Complete.