THIN_DUMP(8) System Manager's Manual THIN_DUMP(8) NAME thin_dump - dump thin provisioning metadata from device or file to standard output SYNOPSIS thin_dump [options] {device|file} DESCRIPTION thin_dump dumps binary thin provisioning metadata (optionally from alternate block; see option --metadata- snap) created by the device-mapper thin provisioning target on a device or file to standard output for analy‐ sis or postprocessing in either XML or human readable format. XML formated metadata can be fed into thin_restore (see thin_restore(8)) in order to put it back onto a metadata device (to process by the device- mapper target) or file. This tool cannot be run on live metadata unless the --metadata-snap option is used. -f, --format {xml|human_readable} Print output in XML or human readable format. -r, --repair Repair the metadata whilst dumping it. -m, --metadata-snap [block#] Dump metadata snapshot created by device-mapper thin provisioning target. If block is not provided, access the default metadata snapshot created by the thin provisioning device-mapper target, else try the one at block#. See the thin provisioning target documentation on how to create or release a metadata snapshot and retrieve the block number from the kernel. -h, --help Print help and exit. -V, --version Output version information and exit. EXAMPLES Dumps the thin provisioning metadata on logical volume /dev/vg/metadata to standard output in human readable format: thin_dump -f human_readable /dev/vg/metadata Dumps the thin provisioning metadata on logical volume /dev/vg/metadata to standard output in XML format: thin_dump /dev/vg/metadata Dumps the thin provisioning metadata snapshot on logical volume /dev/vg/metadata to standard output in human readable format (not processable by thin_restore(8) ): thin_dump --format human_readable --metadata-snap /dev/vg/metadata Red Hat, Inc. Thin Provisioning Tools THIN_DUMP(8)