." Text automatically generated by txt2man era_invalidate - Online Linux Manual PageSection : 8
Updated : Device Mapper Tools
Source : System Manager's Manual

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

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SYNOPSIS.fam C era_invalidate [options] {device|file} .fam T

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DESCRIPTIONera_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.

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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.

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EXAMPLEList the blocks that may have been written since the beginning of era 13 on the metadata device /dev/vg/metadata: .fam C $ era_invalidate --written-since 13 /dev/vg/metadata .fam TThe device may not be actively used by the target when running.

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

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SEE ALSOera_check(8), era_dump(8), era_restore(8)

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AUTHORJoe Thornber <ejt@redhat.com> 0

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Johanes Gumabo

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