how to extend lvm partition in linux
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LVM Management in CentOS/Red Hat 7 Linux
LVM (Logical Volume Manager) is the recommended partition method for CentOS/Red Hat 7 Linux. Specially, if we work on Mail Server, File Server, FTP Server, Web Proxy Server or any application where disk space changes frequently, the LVM partition is mandatory in this case. In my previous article, I discussed how to install CentOS 7.5 with LVM partitioning. If you are new here or CentOS 7 is not yet installed, I will suggest you to follow my previous article and install CentOS 7 with LVM partitioning and then continue this article. In this article, I will discuss how to manage LVM partitioning in CentOS/ Red Hat 7 Linux with the command line utility. Basic Components and Architecture of LVM Before going to start LVM management with command line tool, we should have basic knowledge on the basic LVM terms and architecture. The following three terms are the basic components of the LVM partitioning. Physical Volume: The underlying physical storage unit of an LVM is a block device such as a partition of a disk or the whole disk. To use the block device for an LVM logical volume, the device must be initialized as a physical volume (PV). Volume Groups: [...]
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CentOS 7 Partition Management with fdisk Utility | February 11, 2019
CentOS or Red Hat Linux is a popular server operating system to the system administrators. Almost all the system admins or IT guys who play with mail server, file server, proxy server and so on are so known with CentOS or Red Hat Linux and cannot go a single day without this operating system. The guys who are also wish to be a system admin should be familiar with CentOS or Red Hat operating system. In my previous article, I [...]
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Enable F8 Menu to Enter Safe Mode in Windows 8 & 10 | August 27, 2015
Windows is the most popular operating system in the world. No computer user can go a single day without windows operating system. As windows is a popular operating system, it has a lot of viruses also. But windows provides various tools for removing these viruses. For removing any unwanted program, windows safe mode is a best option. A popular way to open windows safe mode is windows Advanced Boot Options. Advanced Boot Options provides different run levels for windows users so [...]
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Free Web Content Filtering Software for Home Internet | August 10, 2024
We always want to keep safe our home or business internet from unwanted content. There are many internet content filtering softwares those can be used to filter internet content. Among these, OpenDNS is a Free Web Filtering Software used to keep safe home or business internet content. OpenDNS is a DNS based internet content filtering solution. If we use OpenDNS nameservers as DNS, it handles DNS request and filter Malware, Phishing and adult content related websites and denies access. Besides [...]
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Guest WiFi – How to Setup on MikroTik AP | April 30, 2024
Guest WiFi helps to keep your network safe and secure. Any sensitive wireless network should have a guest network. So, Guest WiFi is so essential for an office network. In a corporate office, guests or visitors frequently come and get connected to get internet for a few times. It is so much security issue to keep guest or visitor in the core network because among them someone can damage important network resources. So, to keep them isolated from the core [...]
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MikroTik SSTP VPN Server Configuration with Windows 10 | April 27, 2020
VPN (Virtual Private Network) technology provides a secure and encrypted tunnel across a public network. So, a private network user can send and receive data to any remote private network through VPN tunnel as if his/her network device was directly connected to that private network. Secure Socket Tunneling Protocol (SSTP) transports PPP tunnel over TLS channel. SSTP uses TLS channel over TCP port 443. So, SSTP VPN can virtually pass through all firewalls and proxy servers. Because of using TLS [...]
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How to Properly Downgrade MikroTik RouterOS and Firmware | October 2, 2019
MikroTik RouterOS is in constant development and new features or bug fixes are frequently available, sometimes even monthly. So, it is always recommend upgrading MikroTik RouterOS to a latest and stable version before beginning any configuration. But sometimes you may face that the upgraded version is not working properly according to your demand or you may upgrade to a new version that you don’t want. In this case, you should come back to your workable RouterOS version and firmware. Upgrading RouterOS [...]
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How to Secure MikroTik RouterOS Login Users | February 19, 2021
MikroTik RouterOS is a bridge between WAN and LAN. So, it is mandatory to apply RouterOS login user security policy. Otherwise, RouterOS may so insecure.
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CentOS 8 Networking Configuration Using nmtui Tool | December 14, 2020
The first task after completing CentOS 8 fresh installation is to configure its networking so that it can be accessed from other network devices. In my previous article, I discussed how to install CentOS 8 Graphical User Interface (GNOME Desktop) with step by step screenshots. If you are a new CentOS 8 user and have not yet installed CentOS 8 on your server machine, feel free to follow that article and install CentOS 8 GNOME Desktop according to the article. [...]
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CentOS 7 Network Configuration Using nmtui Tool | August 27, 2018
After completing CentOS 7 fresh installation, the first task to a system administrator is to configure its network so that it can communicate to other network devices. In my previous article, I discussed how to install CentOS 7.5 GUI (GNOME Desktop) step by step. If you are a new CentOS 7 user and yet you have not installed CentOS 7.5 on your server machine, feel free to study my previous article and install CentOS 7.5 GNOME Desktop according to that [...]
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