VDOSETUUID(8)

💅 VDOSETUUID(8) — like, the manual page, bestie

okay so real talk: this is vdosetuuid, section 8 of the System Manager's Manual, and she is the girl for giving your VDO volume a fresh new identity ✨

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🌸 NAME 🌸

vdosetuuid — sets a new uuid for the vdo volume stored on a backing store 🫶

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✨ SYNOPSIS ✨

vdosetuuid [options...]  vdoBacking

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💖 DESCRIPTION 💖

vdosetuuid sets a new uuid for the VDO volume stored on the vdoBacking device. it's giving makeover era, no cap 💅

vdoBacking must be the path of the VDODataLV as described in lvmvdo(7). and here's the tea 🍵 — lvchange(8) will only mount that as read-only, so you have to manually create a writable version of that device yourself. the example below shows you exactly how, so don't panic 😌

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🎀 OPTIONS 🎀

• --help — print this help message and exit. iconic, low-effort, we love her 💜
• --uuid — sets the uuid value that is stored in the VDO device. if you don't specify it, the uuid is randomly generated 🎲✨
• --version — show the version of vdosetuuid. gotta know what you're working with, fr fr 👑

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🦋 EXAMPLE 🦋

like, literally just follow along:

# lvchange -ay vdo1/vdo0pool_vdata
# dmsetup table vdo1-vdo0pool_vdata > vdata.table
# lvchange -an vdo1/vdo0pool_vdata
# dmsetup create vdo1-vdo0pool_vdata --table "`cat vdata.table`"
# vdosetuuid --uuid 6ecb9db8-[...] /dev/mapper/vdo1-vdo0pool_vdata
# dmsetup remove vdo1-vdo0pool_vdata

see? activate it read-only-ish, dump the table, deactivate, recreate it writable with dmsetup, run the vdosetuuid glow-up, then clean up after yourself. main character energy and also good hygiene 🧚💖

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🌈 SEE ALSO 🌈

lvmvdo(7), lvchange(8), dmsetup(8) — go read your sisters' pages, iykyk 📚

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⚠️ quick vibe check: that lvchange(8) read-only thing is not a suggestion, bestie. if you skip the manual writable-device step, it's not gonna slay, it's just gonna fail 😭

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and that's the whole page!! brought to you by Red Hat, dated 2023-04-10, VDOSETUUID(8) forever and always 💀🎀 go set some uuids, you got this ⭐🌸