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58 lines
3.3 KiB
Plaintext
58 lines
3.3 KiB
Plaintext
Episode: 1570
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Title: HPR1570: The JFS File System
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Source: https://hub.hackerpublicradio.org/ccdn.php?filename=/eps/hpr1570/hpr1570.mp3
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Transcribed: 2025-10-18 05:10:51
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---
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This episode of HBR is brought to you by AnanasThost.com.
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Get 15% discount on all shared hosting with the offer code HBR15.
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That's HBR15.
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Better web hosting that's Aniston Fair at AnanasThost.com.
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Alrighty guys, continuing my file system series for those of you who don't know me, I'm
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JWF and I do things with the hacker public radio or sometimes I do a really long podcast
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on my own JWP Linux podcast that I do at Lipson, I haven't done one in a while, I'm probably
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going to get back to that Lipson account because I'm paying for it and you just start
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doing something.
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Today I wanted to talk to you about JFS.
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Now JFS is different than the journaled, then what we were talking about before that
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used the RISER system, so before on a podcast I talked about journaling file system methods,
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right, or journaling file systems.
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So IBM came up with something called the journaled file system or JFS.
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Now you can select JFS as your file system in a number of things, okay?
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It's possibly one of the oldest file systems because it was developed by IBM in 1990 for
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its AIX flavor of Unix.
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However, it wasn't until the second version that it was ported to the Linux environment.
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Note the official IBM name of the second version of JFS is JFS2, but most Linux systems
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refer to it as JFS.
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So when you go in and you set up everything, it's JFS.
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JFS uses the ordered journaling method, storing only the endowed table data in the journal,
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but not removing it until the actual file data is written to the storage device.
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This method is a compromise between the speed of RISER FS and the integrity of the data
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mode journaling method.
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The JFS file system uses an extent-based file allocation allocating a group of blocks
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for each file written to the storage device.
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This method provides less fragmentation on the storage device outside of IBM Linux offerings
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JFS isn't properly used in the Linux family.
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I've used it a few times, but again, I'm mostly used to fault things.
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I think that with XT4, you can probably set the node to do the same thing with the command
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line.
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Okay, all righty, well, so we've talked about the journal file system or JFS.
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It is an option in a lot of BSDs and Linuxes.
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I hope you all have a great day and you all have a challenge with it, I'm not sure if
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it was really interesting with JFS, but it was one of the options when I installed.
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Already, hey, thank you very much.
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If you have any questions, you can reach me at JWP5 at hotmail.com.
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Thank you.
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Bye.
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You've been listening to Hacker Public Radio at Hacker Public Radio dot org.
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We are a community podcast network that releases shows every weekday Monday through Friday.
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Today's show, like all our shows, was contributed by an HBR listener like yourself.
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If you ever thought of recording a podcast and click on our contributing to find out
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how easy it really is, Hacker Public Radio was founded by the digital dot org pound and
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the infonomicom computer club and is part of the binary revolution at binwreff.com.
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If you have comments on today's show, please email the host directly, leave a comment
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on the website or record a follow-up episode yourself.
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Unless otherwise stated, today's show is released on the create of comments, attribution,
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