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

13       era_invalidate examines era metadata and lists  blocks  that  may  have
14       changed since a given era.
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16       This  tool  cannot  be  run on live metadata unless the --metadata-snap
17       option is used.
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OPTIONS

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

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

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

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

51       Joe Thornber <ejt@redhat.com>
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55System Manager's Manual       Device Mapper Tools            era_invalidate(8)