1era_invalidate(8)           System Manager's Manual          era_invalidate(8)
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NAME

6       era_invalidate  -  Provide  a  list of blocks that have changed since a
7       particular era.
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SYNOPSIS

10       era_invalidate [options] {device|file}
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DESCRIPTION

14       era_invalidate examines era metadata and lists  blocks  that  may  have
15       changed since a given era.
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17       This tool cannot be run on live metadata unless the --metadata-snap op‐
18       tion is used.
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OPTIONS

21       -h, --help
22              Print help and exit.
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24       -V, --version
25              Print version information and exit.
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27       -o {output file}
28              Write output to a file rather than stdout.
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30       --metadata-snapshot
31              Use the metadata snapshot rather than the current superblock.
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33       --written-since {era nr}
34              Blocks written since the given era will be listed.
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EXAMPLE

37       List the blocks that may have been written since the beginning  of  era
38       13 on the metadata device /dev/vg/metadata:
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40           $ era_invalidate --written-since 13 /dev/vg/metadata
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42       The device may not be actively used by the target when running.
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DIAGNOSTICS

45       era_invalidate  returns  an  exit  code of 0 for success or 1 for error
46       (eg, metadata corruption).
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SEE ALSO

49       era_check(8), era_dump(8), era_restore(8)
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AUTHOR

52       Joe Thornber <ejt@redhat.com>
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56System Manager's Manual       Device Mapper Tools            era_invalidate(8)
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