SYNOPSIS
cache_check [options] {device|file}
DESCRIPTION
cache_check checks cache metadata created by the device-mapper cache target on a device or file.This 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 is present.
- --skip-mappings
-
Skip checking of the block mappings which make up the bulk of the
metadata.
- --skip-hints
-
Skip checking of the policy hint values metadata.
- --skip-discards
-
Skip checking of the discard bits in the metadata.
EXAMPLE
Analyses and repairs cache metadata on logical volume /dev/vg/metadata:cache_check /dev/vg/metadata
The device may not be actively used by the target when running.
DIAGNOSTICS
cache_check returns an exit code of 0 for success or 1 for error.