.TH CACHE_CHECK 8 "Thin Provisioning Tools" "Red Hat, Inc." \" -*- nroff -*-
.SH NAME
cache_check \- repair cache metadata on device or file

.SH SYNOPSIS
.B cache_check
.RB [ options ]
.I {device|file}

.SH DESCRIPTION
.B cache_check
checks cache  metadata created by
the device-mapper cache target on a
.I device
or
.I file.

This tool cannot be run on live metadata.

.SH OPTIONS
.IP "\fB\-q, \-\-quiet\fP"
Suppress output messages, return only exit code.

.IP "\fB\-h, \-\-help\fP"
Print help and exit.

.IP "\fB\-V, \-\-version\fP"
Output version information and exit.

.IP "\fB\-\-super\-block\-only\fP"
Only check the superblock is present.

.IP "\fB\-\-skip-mappings\fP"
Skip checking of the block mappings which make up the bulk of the
metadata.

.IP "\fB\-\-skip-hints\fP"
Skip checking of the policy hint values metadata.

.IP "\fB\-\-skip-discards\fP"
Skip checking of the discard bits in the metadata.

.SH EXAMPLE
Analyses and repairs cache metadata on logical volume
/dev/vg/metadata:
.sp
.B cache_check /dev/vg/metadata

The device may not be actively used by the target
when running.

.SH DIAGNOSTICS
.B cache_check
returns an exit code of 0 for success or 1 for error.

.SH SEE ALSO
.B cache_dump(8)
.B cache_repair(8)
.B cache_restore(8)

.SH AUTHOR
Joe Thornber <ejt@redhat.com>
.br
Heinz Mauelshagen <HeinzM@RedHat.com>