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hpr_transcripts/hpr1520.txt

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+Episode: 1520
+Title: HPR1520: The Ext File System
+Source: https://hub.hackerpublicradio.org/ccdn.php?filename=/eps/hpr1520/hpr1520.mp3
+Transcribed: 2025-10-18 04:34:56
+
+---
+
+one.
+Okay, and welcome, hey, I hope
+everyone's having a great day. The reason I wanted to do this was I wanted to
+talk about the different file systems and I was interested in this and at
+work we've been doing a lot with the different file systems and so what I'll
+do is a series of notes about the different file systems so the one that was
+most interesting is the XT for me so I started with that the EXT and so it's
+the original the original file system was introduced with Linux and it's called
+the extended file system or this EXT for short it provides a basic
+Unix like file systems for Linux using virtual directory used to handle
+physical devices and storing data on fixed-linked blocks on physical devices the
+XT system uses a system called in-nodes to track information about the file
+stored in the virtual directory the in-nodes system creates a separate table for
+each physical device called the in-node table to store the file
+information so each stored file in a virtual directory has an entry in the in-node
+table the extended part of the name comes from the additional data that
+attracts on each file the file name the file size the owner of the file the
+group the file belongs to excess permissions for the file pointers to each
+disblock that contains data from the file Linux references each in-node in the
+in-node table using a neat number called the in-node number it's assigned by the
+file system as data files are created the file system uses the in-node number to
+identify the file rather than having to use the full file name and path the
+extended file system or XT was implemented in April 1992 as a file system
+created specifically for the Linux kernel it has a made-to-date data
+structure inspired by the traditional Unix file system or UFS and was designed
+by RemiCard to overcome limitations in the Minix file system it was
+first implemented in its first implementation that used the virtual file
+system VSS for support was added in the Linux kernel version 0.960 and it
+could handle file systems up to two gigabytes in size XT was first in a
+series of extended file systems it was immediately superseded by both XC2
+and XI AFS which competed for a time but XT21 because of the long-term
+viability XC2 reminied many issues inside XT such as the immuability in
+mutability of i-nodes and fragmentation
+file system all right this is JW and you can reach me at JWP5 at
+hotmail.com I hope you enjoyed the first installment of the file system
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