LCTL-LCFG_ERASE(8)

💖 LCTL-LCFG_ERASE 💖

okay so bestie, we're deep in the lctl-lcfg_erase corner of the Lustre Configuration Utilities manual (that's the LCTL-LCFG_ERASE(8) page, section 8, iykyk) and honestly? it's giving "registry cleanup but make it ✨dramatic✨". grab a snack, we're doing filesystem config erasure and we're doing it correctly. 🎀

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✨ NAME ✨

lctl-lcfg_erase — erase filesystem config llog 🧹✨

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🌸 SYNOPSIS 🌸

lctl lcfg_erase [-h|--help] [-q|--quiet] FSNAME

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🦋 DESCRIPTION 🦋

lcfg_erase (and yes, its alias is erase_lcfg, same girl different name 💅) permanently erases the configuration for the filesystem named FSNAME. like, gone gone. no undo button. 😭

the MGS should be mounted when you run this command. lowkey important.

so what's it even for? it can be used to:

• remove the backup configuration 🌈
• delete an inactive filesystem (or snapshot) from a shared MGS 💀

and it will also erase the persistent parameters that contain FSNAME in their name from the params configuration log. so it's not just one thing, it's a whole cleanup moment. ✨

the rules bestie: this command must be run on the MGS node with the MGS device mounted. no shortcuts, no "I'll just run it from here", nope. 🫶

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💅 OPTIONS 💅

• -h, --help — shows you a brief usage message. the "what do I even type" helper 🥺
• -q, --quiet — suppresses the informational messages about erased parameters. for when you want your terminal to be as silent as your situationship 🙈

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⭐ EXAMPLES ⭐

erasing everything for a filesystem 🌸

to erase all configuration logs and persistent params for filesystem testfs, including parameters like mdt.testfs-MDT0000.hsm_control:

mgs# lctl lcfg_erase testfs

peeking before you yeet 👀

to check the available configuration logs and configuration parameters that will be erased, run the following commands on the MGS node:

mgs# lctl llog_catlist | grep testfs
mgs# lctl llog_print params | grep testfs

like, look before you delete. main character move fr fr. 👑

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🌈 AVAILABILITY 🌈

lctl-lcfg_erase is part of the lustre(7) filesystem package since release 2.10.0. it's been here, it's been serving. 💖

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🎀 SEE ALSO 🎀

• lctl(8)
• lctl-lcfg_clear(8)
• lctl-lcfg_fork(8)
• lctl-llog_catlist(8)
• lctl-llog_print(8)
• lctl-snapshot-create(8)
• lctl-snapshot-destroy(8)

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and that's the whole page bestie!! 🦋 no cap. this one came straight out of Lustre, dated 2026-03-27 — so if you ever forget where you read all this, that's the source and the date, written right there in the footer like a little signature. slay, go erase responsibly, and pls pls pls double check your FSNAME before you hit enter 💜✨