cache_check man page

cache_check — repair cache metadata on device or file

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.

See Also

cache_dump(8) cache_repair(8) cache_restore(8)

Author

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

Referenced By

cache_dump(8), cache_repair(8), cache_restore(8).

Thin Provisioning Tools Red Hat, Inc.