jfs_logdump(8)

💖 jfs_logdump — bestie's guide to the JFS journal log dumper 💖

okay so you know how jfs_logdump lives in section 8 of the manual (that's the "system admin tools" section, iykyk) — yeah. it dumps a JFS formatted device's journal log. that's the whole vibe. let's get into it 🦋

✨ NAME ✨

jfs_logdump — dump a JFS formatted device's journal log

🌸 SYNOPSIS 🌸

jfs_logdump [ -a ] device

👑 DESCRIPTION 👑

So here's the tea: jfs_logdump dumps the contents of the journal log from the JFS formatted device you point it at, and it drops all of that into an output file called ./jfslog.dmp. literally just yeets the journal into your current directory, no cap.

device is the special file name that corresponds to the actual device you want the journal log dumped from — like, for example, /dev/hdb1. that's the one you pass in. 🎀

🚨 bestie. listen. jfs_logdump must be run as root. no root, no dump, periodt.

💅 OPTIONS 💅

• -a — dump the entire contents of the journal log instead of just the committed transactions since the last synch point. it's giving "give me everything", and honestly? slay.

🌈 EXAMPLE 🌈

Say you wanna dump the entire JFS journal log from the 3rd partition of the 2nd hard disk straight into ./jfslog.dmp. you'd do:

jfs_logdump -a /dev/hdb3

and boom, that's it, you ate. 🍓

😭 REPORTING BUGS 😭

If you find a bug in JFS or in jfs_logdump, please report it through the bug tracking system (the "Report Bugs" section, obviously) on the JFS project web site:

http://jfs.sourceforge.net/

and pleaseeee send as much pertinent information as possible, including:

• any jfs_logdump error messages you got
• the complete output of running jfs_fsck with the -v option on the JFS device

like, the more info the better, don't be shy, we're all friends here 🫶

🔥 SEE ALSO 🔥

jfs_fsck(8), jfs_mkfs(8), jfs_fscklog(8), jfs_tune(8), jfs_debugfs(8)

💜 AUTHORS 💜

• Barry Arndt (barndt@us.ibm.com)
• William Braswell, Jr.

jfs_logdump is maintained by IBM. check the JFS project web site for more details:

http://jfs.sourceforge.net/

and that's the whole page, bestie — this one came from the JFS utility manual (the journal log dump one, section 8) and it's dated October 29, 2002. oldie but a goodie, fr fr. go dump that journal, you main character 💖✨