thin-provisioning-tools/man8/era_invalidate.txt

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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>