Man pages sections > man8 > era_invalidate

era_invalidate - Provide a list of blocks that have changed since a

era_invalidate(8) System Manager's Manual era_invalidate(8)

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
Print version information and exit.
-o {output file}
Write output to a file rather than stdout.
--metadata-snapshot
Use the metadata snapshot rather than the current superblock.
--written-since {era nr}
Blocks written since the given era will be listed.

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_restore(8)

AUTHOR

Joe Thornber <ejt@redhat.com>
Device Mapper Tools System Manager's Manual