May 16
File System Implementations Linux supports many different file systems, each designed with different goals such as performance, reliability, scalability, compatibility, or storage efficiency.
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File System Implementations Linux supports many different file systems, each designed with different goals such as performance, reliability, scalability, compatibility, or storage efficiency.
Learn All About Linux File Systems
In this blog explain Linux File System Architecture, File system Hierarchy atandard (FHS), Extended File System (EXT), Second Extended File System (EXT2), Second Extended File System (EXT2) (Cont’d), Second Extended File System (EXT2) (Cont’d) etc…
Read More : https://info-savvy.com/learn-all-about-linux-file-systems/
Linux File System Architecture, File system Hierarchy atandard (FHS), Extended File System (EXT), (EXT2)...
In this blog explain Linux File System Architecture, File system Hierarchy atandard (FHS), Extended File System (EXT), Second Extended File System (EXT2), Second Extended File System (EXT2) (Cont’d), Second Extended File System (EXT2) (Cont’d) etc…
Read More : https://info-savvy.com/learn-all-about-linux-file-systems/
Linux File System’s & Their History
Foreword: Linux file systems have been some of the most confusing to deal with in my experience. My experience of course, being that of installing distros and not understanding why the GRUB prompt shows a ill-partitioned disk, or indicating some other problem with how the partitions have been formatted. This gap in knowledge leads me to pulling my hair out and reinstalling Linux more often than attempting repairs to file systems. This post serves to teach me more about how the Linux File System works and hopefully serves as a resource for you to learn as well.
History:
EXT or Extended File System was created in 1992 by Remy Card to overcome limitations of the original Unix file system and it's successor named MINIX. EXT needed to exist because MINIX had limitations including a lack of large partition sizing (max of 64MB) and a limit to the length of file names (14 characters) which Remy aimed to fix. By 1993, ext2 was being developed by Remy Card as a replacement for the original ext file system. Following this in 2001, ext3 was created to add support for Journaling which is an important foundation of memory devices today. Journaling allows the File System to keep a record of every transaction or transfer within the file system. The record helps prevent corrupted data following a system crash as well as potentially provide speed increases during transfers. As of today, 4 versions of ext have been produced with the most recent version being ext4 (kinda figures huh?).
Features:
Some of the differences between these file systems can be confusing, so I laid out the chart below which will hopefully help:
MINIX: + Basic File Access + Less Complex than UFS
ext: + 2GB File Size + > 64MB Partition Sizes
ext2: + > 16GB File Size (Depending on Block Size) + Up to 32TB Max File System Size
ext3: + Journaled + Allowed in-place upgrades from ext2 to ext3
ext4: + Current default for Debian and Ubuntu + 16TB Max File Size + 1 EB File System Size (That's 1 Billion GB!!) + Backwards Compatible + Unlimited Sub-directories + Improved Timestamps
Future Outlook:
Clearly the latest ext4 has benefits that should last us far into the future. As data gathering and storage become cheaper and more ubiquitous, it's not hard to imagine a world where you can use 1,000's of GB's worth of data very quickly. Having an "extended" (pardon the pun) feature-set for your file systems that continuously improves will always be needed. So, what are the Linux Foundations next steps for this file system? Are there any planned updates or a road map for future changes? Long story short - multiple file systems are in the works that can potentially replace ext4 including ZFS, XFS, and BTRFS although each of them are far from complete. ext4 is slated to stick around for the coming future until one of these 3 new systems takes over. Once they do, you can be sure I'll have an update here explaining my frustrations with that one as well! Until next time.....