Уровень 0 · материалов: 8
В кластер входят документы, посвященные техническим аспектам распределения, расширения и оптимизации физического или логического дискового пространства в Linux; документы об архитектурном расположении системных бинарных файлов в него не входят.
Общие признаки: расширение дискового пространства, управление разделами и LVM, оптимизация резервных блоков ext4, администрирование файловых систем
Группа выше: Администрирование Linux-серверов
Смысл: The main idea is that proper disk partitioning in Unix-like servers should be driven by security (isolating writable areas), stability (preventing root disk exhaustion), and flexibility (using LVM), rather than following rigid, outdated rules.
A technical guide recommending the separation of /home, /tmp, and /var into distinct partitions and the use of LVM and specific mount options to improve server security and stability.
Смысл: The main idea is to explain LVM as a flexible tool for disk management in Linux that decouples physical storage from logical partitions, allowing for easier resizing and online data migration.
A simplified guide to Linux LVM explaining its architecture (PV, VG, LV) and providing practical examples of setup and live data migration.
Смысл: The text serves as a technical introduction to disk management in Linux, covering the lifecycle of a partition from creation via fdisk to formatting with various file systems and configuration via fstab.
A technical guide for beginners explaining how to partition disks with fdisk, choose and create Linux file systems, and configure automatic mounting via fstab.
Смысл: The main idea is that current file systems and block device abstractions are too rigid for the needs of modern virtualization, lacking a native, automated way to dynamically expand and contract disk space without manual administration and performance hits.
The author discusses the inefficiency of manual file system resizing in virtual machines and calls for a more dynamic, automated interaction between file systems and virtual block devices.
Смысл: The main idea is to provide a practical, low-downtime method for expanding disk space on a Linux cloud server by modifying partition tables and resizing the filesystem online.
A technical guide on expanding a Linux ext4 disk partition from 30GB to 50GB on a live cloud server using fdisk, partprobe, and resize2fs.
Смысл: The text explains a hidden mechanism in Linux (specifically ext3/ext4) where 5% of disk space is reserved for the root user. The author argues that this is wasteful for non-system drives and provides a technical solution to reclaim this space.
Linux ext3/ext4 filesystems reserve 5% of space for the root user, which can be reclaimed using the tune2fs command.
Смысл: The main idea is that Linux users can recover substantial disk space (up to 5% of total capacity) by using the -m flag in mkfs.ext4 to reduce the reserved blocks intended for the root user.
Linux users can reclaim up to 5% of their disk space by using the -m parameter in mkfs.ext4 to reduce reserved blocks for the superuser.
Смысл: The main idea is to provide a practical technical procedure for expanding the storage capacity of a Linux-based virtual machine that uses LVM and an extended partition scheme without losing data.
A step-by-step technical guide on resizing qcow2 virtual disks using qemu-img, parted, and LVM tools for ext4 filesystems.