How to Remove Physical Volume from a Volume Group in LVM
If a device is no longer need for use by LVM, you can use the vgreduce command to remove physical volumes from a volume group. The Vgreduce command shrinks the capacity of a volume...
Category: Linux Advanced Commands
How to Reduce/Shrink LVM’s (Logical Volume Resize) in Linux
Reducing/Shrinking the logical volume is the highest risk of data corruption. So try to avoid this kind of situation if possible, but go ahead if you have no other options. It is always recommended...
How to Extend/Increase LVM’s (Logical Volume Resize) in Linux
Expanding the logical volume is extremely easy, it takes very few steps and can be done online without unmounting a certain logical volume. The main purpose of LVM is flexible disk management, which allows...
How to Create/Configure LVM (Logical Volume Management) in Linux
Logical Volume Manager (LVM) plays an important role in the Linux operating system by improving the availability, disk I/O, performance and capability of disk management. LVM is a widely used technique that is extremely...
How to Scan/Detect New LUNs and SCSI Disks on Linux
When the Linux system has connected to the SAN (Storage Area Network) you need to rescan the iSCSI service to discover new LUNs. To do so, you must provide the WWN number of the...
How to Convert Text Files between Unix and DOS (Windows) Formats
As a Linux administrator, you may have noticed some requests from developers to convert files from DOS format to Unix format, and vice versa. This is because these files were created on a Windows...
How to Kill User Sessions on Linux
Sometimes you may need to kill multiple user sessions on Linux. For example, you have to run a month job, for which all users have to be logged out of the system. Another example...
How to Become a root User In Linux
The root user is a privileged user on Linux, which is similar to an administrator on Windows. It performs all kinds of administrative operations, so do not give anyone root access because they may...
How to Mount and Unmount File System/Partition in Linux
Generally, a file system must be mounted on a Linux system to access the contents. When adding a new hard disk to your system, you may need to use the fdisk command or the...
How to Remove Files Older than N Days Using Tmpwatch/Tmpreaper on Linux
You may have missed deleting files that are no longer needed on your computer in some directory. This can be “Download” or any other directory. It may have grown up over a period of...
