era_dump(8)

✨ era_dump(8) — System Manager's Manual ✨

Okay so this is the manual page for era_dump, the tool that dumps era metadata 💖 (it's from the Device Mapper Tools crew, btw 🧚).

📝 NAME

era_dump — dump era metadata from device or file to standard output. 🎀

📜 SYNOPSIS

era_dump [options] {device|file}

💅 DESCRIPTION

Bestie, era_dump is the one that grabs binary era metadata made by the device-mapper era target on a device or file and spits it out to standard output in XML format 🫶. It's giving analysis and postprocessing vibes ✨. Then you can feed that XML into era_restore (see era_restore(8)) to put it back onto a metadata device (so the device-mapper target can process it) or onto a file 🔥.

⚠️ Lowkey important: this tool cannot be run on live metadata. Don't even try it 💀.

🎀 OPTIONS

• -h, --help — Prints help and exits. Main character energy 👑
• -V, --version — Prints version information and exits 🦋
• --repair — Repairs the metadata while it's being dumped 🛠️✨
• --logical — Folds any unprocessed write sets into the final era array. 🌸

Okay, you probably want this one if you're planning to process the results, because it makes the XML way simpler 🙈.

• -o {xml file} — Writes the output to a file you specify instead of stdout 💜

🧚 EXAMPLES

Dumps era metadata on logical volume /dev/vg/metadata to standard output in XML format:

    $ era_dump /dev/vg/metadata

💀 DIAGNOSTICS

era_dump returns an exit code of 0 for success or 1 for error. So if it's 1, it's not you, it's the tool 😭.

🔗 SEE ALSO

era_check(8), era_restore(8), era_invalidate(8) 🌈

👑 AUTHOR

Joe Thornber <ejt@redhat.com> 🫶

Bye bestie, this was the era_dump(8) page, from the Device Mapper Tools crew, served with love 💖🦋 Stay iconic 💅✨