man > cache_repair(8)

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📛 NAME

cache_repair — repair cache binary metadata from device/file to device/file.

🚀 Quick Reference

Use Case	Command	Description
🔧 Repair metadata from file to device	cache_repair -i metadata -o /dev/vg/metadata	Reads binary cache metadata from a file, repairs it, and writes to a logical volume
📄 Repair metadata between two files	cache_repair -i old_metadata -o new_metadata	Repairs metadata from one file to another for offline processing
📋 Check tool version	cache_repair --version	Print version information and exit
❓ Get help	cache_repair --help	Print help and exit

📋 SYNOPSIS

cache_repair [options] -i {device|file} -o {device|file}

📝 DESCRIPTION

cache_repair reads binary cache metadata created by the respective device-mapper target from one device or file, repairs it and writes it to another device or file. If written to a metadata device, the metadata can be processed by the device-mapper target.

⚠️ This tool cannot be run on live metadata.

⚙️ OPTIONS

❓ -h, --help

Print help and exit.

ℹ️ -V, --version

Print version information and exit.

📥 -i, --input {device|file}

Input file or device containing binary metadata.

📤 -o, --output {device|file}

Output file or device for repaired binary metadata.

If a file is used then it must be preallocated, and large enough to hold the metadata.

💡 EXAMPLE

Reads the binary cache metadata from file metadata, repairs it and writes it to logical volume /dev/vg/metadata for further processing by the respective device-mapper target:

$ cache_repair -i metadata -o /dev/vg/metadata

🩺 DIAGNOSTICS

cache_repair returns an exit code of 0 for success or 1 for error.

📚 SEE ALSO

cache_dump(8), cache_check(8), cache_restore(8)

👤 AUTHOR

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

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System Manager's Manual — Device Mapper Tools — cache_repair(8)

📛 NAME 🚀 Quick Reference 📋 SYNOPSIS 📝 DESCRIPTION ⚙️ OPTIONS 💡 EXAMPLE 🩺 DIAGNOSTICS 📚 SEE ALSO 👤 AUTHOR