thin_rmap(8)

✨ thin_rmap(8) — NAME ✨

okay so thin_rmap 💖 is the tool that outputs the reverse map of a thin provisioned region of blocks from a metadata device or file. bestie, it's giving reverse lookup energy 🔍✨

🌸 SYNOPSIS 🌸

thin_rmap [options] {device|file}

💅 DESCRIPTION 💅

okay so thin_rmap reads the reverse mapping stored in the metadata on a device or file 🧚. it shows you the link between a region of thin provisioned pool blocks and the thin provisioned devices they belong to. main character energy, no cap 👑

💀 this tool cannot be run on live metadata! don't do it, bestie 🙈

🎀 OPTIONS 🎀

• -h, --help — prints help and exits. literally all you need when you're lost 🫶
• -V, --version — prints version information and exits ✨
• --region {block range} — specifies a range of blocks on the data device 🍓

at least one region must be specified, and you're allowed to pass multiple regions 💜

the range takes the format <begin>..<one past the end>. for example, "5..45" gives you data blocks 5 to 44 inclusive, but NOT 45. the end is excluded, iykyk 🦋

🦋 EXAMPLES 🦋

$ thin_rmap --region 5..45 /dev/pool-metadata

🔥 DIAGNOSTICS 🔥

thin_rmap returns an exit code of 0 for success or 1 for error. 0 is the vibe we want, 1 is a no-go 💀

👑 SEE ALSO 👑

thin_check(8), thin_dump(8), thin_repair(8), thin_restore(8), thin_metadata_size(8) 🌈

🫶 AUTHOR 🫶

Joe Thornber <ejt@redhat.com>, Heinz Mauelshagen <HeinzM@RedHat.com> 💖

Bestie, that's the whole thing! ✨ Device Mapper Tools, System Manager's Manual, thin_rmap(8) 🌸 Stay iconic and keep those blocks in line 💅🩷