thin-provisioning-tools/man8/thin_check.txt

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NAME
thin_check - validates thin provisioning metadata on a device or file
SYNOPSIS
thin_check [options] {device|file}
DESCRIPTION
thin_check checks thin provisioning metadata created by the device-mapper
thin provisioning target on a device or file.
The tool cannot be run on live metadata.
OPTIONS
-q, --quiet Suppress output messages, return only exit code.
-h, --help Print help and exit.
-V, --version Output version information and exit.
--super-block-only Only check the superblock.
--skip-mappings Skip checking of the block mappings which make up the bulk of the metadata.
--ignore-non-fatal-errors Will only return a non-zero exit code if it finds a fatal error.
An example of a nonfatal error is an incorrect data block reference count
causing a block to be considered allocated when it in fact isn't. Ignoring
errors for a long time is not advised, you really should be using
thin_repair to fix them.
EXAMPLE
Analyses thin provisioning metadata on logical volume /dev/vg/metadata:
$ thin_check /dev/vg/metadata
The device must not be actively used by the target when running.
DIAGNOSTICS
thin_check returns an exit code of 0 for success or 1 for error.
SEE ALSO
thin_dump(8), thin_repair(8), thin_restore(8), thin_rmap(8), thin_metadata_size(8)
AUTHOR
Joe Thornber <ejt@redhat.com>, Heinz Mauelshagen <heinzm@redhat.com>