This article provides a step‑by‑step, safety‑focused guide for expanding LVM logical volumes and ext4 or XFS filesystems online, covering device‑mapping verification, free‑space assessment, metadata backup, three expansion paths (VG free space, underlying disk growth, adding a new disk), and thorough post‑expansion validation.
A simple Bash script run over a weekend by researcher Nicholas Carlini leveraged Claude Opus 4.6 to discover a critical NFSv4 vulnerability that had persisted in Linux kernels since March 2003, prompting Linus Torvalds to announce AI‑driven security as a new normal in the Linux 7.0 release.
This article demystifies Linux’s “everything is a file” philosophy, explains the single‑tree mount model, outlines the seven file‑type categories, compares ext4, XFS, and Btrfs, and provides essential commands and common pitfalls for managing Linux file systems.
This comprehensive guide compares ext4, XFS, and Btrfs on Linux, covering their architecture, performance characteristics, configuration options, tuning methods, testing procedures, scenario‑based selection advice, and detailed troubleshooting and recovery techniques for system administrators.
This guide walks Linux administrators through why xfs_undelete is the preferred XFS recovery tool, how to install it in under five minutes, and step‑by‑step commands—including basic, time‑filtered, and type‑filtered recovery—plus three real‑world scenarios, advanced tips, and common pitfalls.
This article walks through expanding a Linux server’s root filesystem by checking disk usage, adding a new disk, creating a physical volume, extending the volume group and logical volume, and resizing the XFS filesystem, with commands and screenshots for each step.
This comprehensive guide examines the three major Linux file systems—ext4, XFS, and Btrfs—covering their architectures, performance metrics, use‑case recommendations, tuning commands, monitoring scripts, and future development trends so you can choose the optimal storage solution for any workload.
The article examines Linux's page‑cache writeback mechanism, explains why the single‑threaded writeback path becomes a bottleneck under heavy writes, and details Vivo's multithreaded writeback patches—including inode‑to‑context mapping and sysfs‑controlled thread counts—that achieve up to 2.4 GB/s on XFS and a 22 % speedup on F2FS, while also discussing fragmentation trade‑offs and optimal thread‑to‑allocation‑group ratios.
Learn step-by-step how to mount a CentOS ISO into rescue mode, activate LVM volumes, run XFS repair (or ext4 fsck), and then restore a Windows Server 2022 virtual machine’s bootloader using diskpart, bootrec, and bcdboot commands, ensuring both Linux and Windows systems boot correctly.
Explore the critical differences among Linux’s three major filesystems—ext4, XFS, and Btrfs—covering architecture, performance benchmarks, real‑world use cases, tuning commands, and future trends, so you can confidently choose the optimal storage solution for any production environment.
This guide walks you through three practical Linux disk‑partitioning scenarios—mounting a new disk to a directory, expanding a subdirectory via a symbolic link, and enlarging the root partition on an MBR disk—complete with step‑by‑step commands, formatting tips, and verification checks.
This article explains how to identify a full disk, prepare the environment, partition and format a new disk, update fstab, copy data, and verify the expansion using Linux commands such as fdisk, mkfs.xfs, mount, and du.
This guide walks through Linux primary and logical partition concepts, MBR structure, fdisk commands, creating and formatting partitions with XFS, automating mounts, handling large or faulty disks, and setting up swap space for virtual memory.
This guide walks through moving a large iSCSI multipath LVM/XFS volume from one Linux server to another, detailing each command, the troubleshooting of a superblock error caused by a typo in /etc/fstab, and best‑practice tips to avoid similar pitfalls.
This article analyzes the XFS filesystem implementation in the Linux kernel, covering its on‑disk layout, superblock and allocation‑group structures, inode and free‑space B+ trees, operation sets (iops, fops, aops), file creation, write and read paths, logging, block layer interactions, and useful XFS utilities.
This article reviews the key features, advantages, and command‑line examples of major Linux file systems—including ext4, Btrfs, XFS, ZFS, F2FS, and OverlayFS—to help you select the most suitable one for performance, reliability, and specific workload requirements.
This guide compares the most common Linux file systems—ext4, Btrfs, ZFS, Reiser4, XFS, and JFS—explaining their key features, advantages, and ideal use cases so you can select the best storage solution for your Linux installation.
Linus Torvalds announced the Linux 6.4-rc6 kernel, highlighting extensive XFS filesystem fixes, numerous driver updates—including GPU and network drivers—architectural patches for arm64, and a projected stable release around June 25, with a possible delay to July 2 if issues arise.
This article describes a step‑by‑step process for diagnosing a Linux server that entered rescue mode after an illegal reboot, using journalctl and systemctl commands, checking disk status, repairing an XFS filesystem with xfs_repair, and safely unmounting, re‑formatting, and re‑mounting the data partition without losing existing data.
Learn step‑by‑step how to enlarge a Linux root filesystem using LVM commands—checking disk usage, creating a physical volume, extending the volume group and logical volume, and resizing the XFS filesystem—complete with command examples and verification screenshots.
This guide walks you through checking the current XFS root size, enlarging the virtual disk in VMware, installing the growpart utility, extending the root partition, resizing the XFS filesystem with xfs_growfs, and verifying the new 40 GB capacity, while noting important constraints such as the need for no following partitions.
This guide explains how to configure and manage Linux disk quotas on XFS file systems, covering prerequisites, quota activation options, user/group/project quota modes, command‑line procedures, testing scenarios, and common operational commands for administrators.
This comprehensive tutorial explains how to enable and configure Linux Disk Quota on XFS filesystems, covering prerequisites, quota modes, user and directory limits, grace periods, testing scenarios, and essential administration commands for effective storage management.
This guide explains how to shrink the /home partition, install missing fuser, resize the filesystem, and expand the root directory on a CentOS/RHEL 7 log server, including commands for unmounting, killing processes, resizing ext4 or xfs partitions, and re‑mounting the filesystem.
This guide explains how to safely reduce the /home partition size, free up space, and extend the root filesystem on a CentOS 7 server by unmounting /home, locating and terminating lingering processes, resizing the filesystem, installing required tools, and remounting the adjusted partitions.
This guide walks through diagnosing a mis‑partitioned CentOS 7 log server, installing missing tools, safely unmounting and shrinking the /home XFS filesystem, expanding the root volume, and remounting while emphasizing backup and proper command usage.
In an interview, ByteDance edge‑computing architect Zhou Chaoyong explains how CDN and storage architectures have evolved with rising data demands, predicts NVMe's dominance in the storage market, and previews his upcoming SACC 2020 talk on high‑performance XFS storage systems.
This guide walks through shrinking the /home partition, extending the root filesystem on a CentOS 7 server, handling busy mount issues, installing missing tools like fuser and xfsdump, resizing XFS, and safely remounting the partitions.
This article explains the XFS file system’s key features such as data integrity, performance, scalability and bandwidth, and provides step‑by‑step instructions for downloading kernel patches, enabling XFS support, compiling the kernel, creating and mounting XFS partitions, and migrating existing Linux systems to XFS.
After moving a Git server to a new data center, CPU sys time surged due to thousands of sshd processes contending on XFS read‑write locks while repeatedly reading a massive /var/log/btmp file caused by PAM postlogin, and the analysis shows how perf, strace and log rotation can resolve the issue.
This guide explains how to manage large Linux disks by using GPT partition tables, choosing XFS or EXT4 filesystems, performing partitioning with parted, formatting with appropriate mkfs commands, handling e2fsprogs version requirements, and considerations for lazy init and snapshot impacts.
This article explains how Linux organizes files through its file system, covering the role of the kernel and shell, the classification of file systems, detailed insights into ext4 and XFS, and the purpose of each standard directory in the hierarchy.
This article walks through diagnosing severe memory consumption on an NFS server by examining top, vmstat, and slabtop outputs, revealing that large XFS inode and ILI caches from multiple volumes can drain RAM and how to free it.
This article explains the design and operation of journaling file systems, compares Ext3, ReiserFS, XFS, and JFS across their logging modes, internal structures, and performance results from Postmark and Bonnie++ tests, and offers practical conclusions for different workload scenarios.
This guide walks through creating an XFS filesystem on a new partition, configuring LVM physical, volume, and logical volumes, formatting with XFS, enabling user and group quotas, assigning quota limits, testing quota enforcement, and finally expanding the logical volume and growing the XFS filesystem.
