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Search results for Filesystem snapshots with unionfs

Linux

Filesystem snapshots with unionfs

Post date: July 2, 2005, 01:07 Category: System Views: 2853 Comments
Tutorial quote: Many times, you need to know how a certain filesystem looked like at some point in time, and you want to be able to roll back changes that happened to it after that point. While there are multiple solutions to achieve this goal, certainly one of them is to use filesystem snapshots.
OpenSUSE

rsnapshot - Local/Remote Filesystem backups utility in openSUSE

Post date: October 6, 2008, 21:10 Category: System Views: 3834 Comments
Tutorial quote: rsnapshot is a filesystem backup utility based on rsync. Using rsnapshot, it is possible to take snapshots of your filesystems at different points in time. Using hard links, rsnapshot creates the illusion of multiple full backups, while only taking up the space of one full backup plus differences. When coupled with ssh, it is possible to take snapshots of remote filesystems as well.
Debian

Boot On BTRFS With Debian

Post date: August 2, 2009, 11:08 Category: Miscellaneous Views: 2916 Comments
Tutorial quote: This tutorial will explain you how to boot from a BTRFS filesystem with kernel 2.6.31-RC4 and BTRFS 0.19. BTRFS is a new filesystem with some really interesting features like online defragmenting and snapshots. BTRFS is an experimental filesystem, use at your own risk. The kernel used is also experimental.
Linux

Entering A Safe Mirror When Logging In With Unionfs And Chroot

Post date: June 28, 2007, 00:06 Category: Miscellaneous Views: 2616 Comments
Tutorial quote: When reading a hint on the website of LinuxFromScratch I discovered the special capabilities of unionfs, specially in combination with chroot. Later I read a HowTo on a wikiwebsite of Gentoo, about entering a chrooted home directory when using a special script as shell. Combining these two brings me to using a chrooted environment, which you enter when logging in as a special user. This environment is an exact copy (mirror) of the system you are working on. Because you are in safe copy of the real system, you can do whatever you like, it will never change the system, everything stays inside the cache (the readwrite branch).
Ubuntu

Back In Time – A Simple backup tool for ubuntu

Post date: July 15, 2009, 21:07 Category: Software Views: 4608 Comments
Tutorial quote: Back In Time is a simple backup tool for Linux inspired from “flyback project” and “TimeVault”.The backup is done by taking snapshots of a specified set of directories.Keep in mind that Back In Time is just a GUI. The real magic is done by rsync (take snapshots and restore), diff (check if somethind changed) and cp (make hardlinks).
Ubuntu

Creating Snapshot Backups Of Your Desktop With TimeVault On Ubuntu 7.10

Post date: December 20, 2007, 12:12 Category: Miscellaneous Views: 3243 Comments
Tutorial quote: This document describes how to set up, configure and use TimeVault on Ubuntu 7.10. The resulting system provides a powerful backup system for desktop usage. TimeVault is a simple front-end for making snapshots of a set of directories. Snapshots are a copy of a directory structure or file at a certain point in time. Restore functionality is integrated into Nautilus - previous versions of a file or directory that has a snapshot can be accessed by examining the properties and selecting the 'Previous Versions' tab.
Debian

Monitoring your filesystem for unauthorised change

Post date: July 15, 2006, 05:07 Category: Security Views: 2895 Comments
Tutorial quote: If you're running a stable server and are worried about an intruder modifying your system binaries to install new corrupted versions you should be using a filesystem integrity checker.
Linux

Genisoimage - Creates ISO-9660 CD-ROM filesystem images

Post date: April 16, 2009, 06:04 Category: Software Views: 3882 Comments
Tutorial quote: genisoimage is a pre-mastering program for creating ISO-9660 CD-ROM filesystem images, which can then be written to CD or DVD media using the wodim program. genisoimage includes support for making bootable “El Torito” CDs, as well as CDs with support for the Macintosh HFS filesystem.

SuSe

Working with SUSE Linux Enterprise Server 9

Post date: June 22, 2005, 09:06 Category: System Views: 3482 Comments
Tutorial quote: Working with SUSE Linux Enterprise Server (SLES) requires an understanding of the login process, including local account files, system accounts, and managing identities.

Using a console shell or the graphical environment are two possible methods of working on a SLES machine.

Finding your way around a SLES installation requires an in-depth knowledge of the filesystem layout. Essential filesystem components are documented and explained in this chapter. Basic filesystem permissions are also described.
Unix+clones

Easy Automated Snapshot-Style Backups with Linux and Rsync

Post date: February 1, 2006, 00:02 Category: Software Views: 3042 Comments
Tutorial quote: This document describes a method for generating automatic rotating "snapshot"-style backups on a Unix-based system, with specific examples drawn from the author's GNU/Linux experience. Snapshot backups are a feature of some high-end industrial file servers; they create the illusion of multiple, full backups per day without the space or processing overhead. All of the snapshots are read-only, and are accessible directly by users as special system directories. It is often possible to store several hours, days, and even weeks' worth of snapshots with slightly more than 2x storage. This method, while not as space-efficient as some of the proprietary technologies (which, using special copy-on-write filesystems, can operate on slightly more than 1x storage), makes use of only standard file utilities and the common rsync program, which is installed by default on most Linux distributions. Properly configured, the method can also protect against hard disk failure, root compromises, or even back up a network of heterogeneous desktops automatically.
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