NAME era_invalidate - Provide a list of blocks that have changed since a particular era.

SYNOPSIS era_invalidate [options] {device|file}

DESCRIPTION era_invalidate Examines era metadata and lists blocks that may have changed since a given era.

This tool cannot be run on live metadata unless the --metadata-snap option is used.

OPTIONS -h, --help Print help and exit.

-V, --version Output version information and exit.

-o <output file> Write output to a file rather than stdout

EXAMPLE List the blocks that may have been written since the beginning of era 13 on the metadata device /dev/vg/metadata.

era_invalidate --written-since 13 /dev/vg/metadata

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

DIAGNOSTICS era_invalidate returns an exit code of 0 for success or 1 for error (eg, metadata corruption).

SEE ALSO era_check(8), era_dump(8), era_repair(8), era_restore(8)

AUTHOR Joe Thornber <>

Red Hat, Inc. Thin Provisioning Tools ERA_INVALIDATE(8)