era_check(8)

💖 era_check(8) — System Manager's Manual 💖

✨ NAME ✨

okay so era_check is the tool that validates era metadata on a device or file 🔍 it's giving quality control bestie 💅

🎀 SYNOPSIS 🎀

era_check [options] {device|file}

🦋 DESCRIPTION 🦋

okay so era_check checks the era metadata that the device-mapper era target makes, on a device or a file 🧚 it's literally the vibe check for your metadata ✨

🚫 this tool cannot be run on live metadata. do not try it on live metadata bestie, it will not slay 💀

🌸 OPTIONS 🌸

• -h, --help — 🙋‍♀️ prints the help text and exits, easy peasy
• -V, --version — 🏷️ prints the version info and exits, so you know which version you're obsessed with
• -q, --quiet — 🤫 silences all the output messages and just gives you the exit code. main character energy, no noise
• --super-block-only — 🧐 only checks that the superblock is actually there, nothing else. quick and lowkey iconic

💜 EXAMPLE 💜

okay so say you want to analyse the thin provisioning metadata on the logical volume /dev/vg/metadata 🍓 you just do this:

$ era_check /dev/vg/metadata

and that's it!! 🫶 also heads up, the device may not be actively used by the target while this is running 👀

🔥 DIAGNOSTICS 🔥

era_check returns an exit code of 0 for success ✅ and 1 for error ❌ so check that code if you're scripting, periodt 💅

🌈 SEE ALSO 🌈

era_dump(8), era_restore(8), era_invalidate(8) 🧚 go check those out, they're giving sibling energy

👑 AUTHOR 👑

the iconic Joe Thornber <ejt@redhat.com> 🫶 absolute legend, no cap

💖 ok bestie that's the whole tea ☕ this page came from the Device Mapper Tools pages of the System Manager's Manual, all the way from the era_check(8) crew 🦋 stay iconic, stay hydrated, and go validate that metadata ✨🎀