We have already seen how to remove an unused PV from the volume group with vgreduce command. CentOS / RHEL : How to remove unused Physical Volume(PV) from Volume Group (VG) in LVM The vgreduce command shrinks the volume group by removing one or more PVs. But in case if the PV is in use […]
Archives for October 2017
Linux OS Service ‘ntpd’
Service Name ntpd Description This service executes the Network Time Protocol (NTP) daemon ntpd. The purpose is to synchronize the time of the local computer to a NTP server or other reference time source such as a radio or satellite receiver or modem. The NTP time protocol provides accuracies typically within a millisecond on LANs […]
Linux / UNIX : How to create primary partition using fdisk
Whats is a disk partition Partitioning divides a disk drive into one or more logical disks. Each partition is treated as a separate disk with its own file system. Partition information is stored in a partition table. There are 2 types of partitions that can be created using the fdisk utility : Primary Partitions Extended […]
LVM Configuration : Logical Volume (LV) Operations/Utilities
Once you have created the Physical volumes and volume groups, the next step is to create logical volumes from the space allocated to volume groups. The post discusses few of the most commonly used logical volume related commands and utilities. Creating Logical Volumes Use the lvcreate command to create a new logical volume. This command […]
LVM Configuration : Volume Group (VG) Operations/Utilities
The next step in implementing LVM after creating the physical volumes or PV, is to assign the physical volumes to an existing or new volume group. Below are the most commonly used VG related operation/utilities. Creating a Volume Group Use the vgcreate command to create a new volume group. Space in a volume group is […]
LVM Configuration : Physical Volume (PV) Operations/Utilities
The first step in implementing LVM is to create physical volumes. In addition to creating physical volumes, commands exist to display the attributes of physical volumes, remove physical volumes, and perform other functions on physical volumes. Creating Physical Volumes Use the pvcreate command to create physical volumes. The syntax is: # pvcreate [options] device You […]
UNIX / Linux : How to install and configure mutt
Mutt is known for being a fast and highly configurable mail client, and since it is text-based, it’s ideal for checking email quickly over SSH. Installing mutt mutt can be installed by yum utility as follows. # yum install mutt …. Dependencies Resolved ======================================================================================================================================================================================================== Package Arch Version Repository Size ======================================================================================================================================================================================================== Installing: mutt x86_64 5:1.5.21-27.el7 base […]