thin-provisioning-tools/man8/era_dump.8
2017-09-18 16:10:56 +01:00

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.TH ERA_DUMP 8 "Thin Provisioning Tools" "Red Hat, Inc." \" -*- nroff -*-
.SH NAME
era_dump \- dump era metadata from device or file to standard output
.SH SYNOPSIS
.B era_dump
.RB [options]
.I {device|file}
.SH DESCRIPTION
.B era_dump
dumps binary era metadata created by the device-mapper
era target on a
.I device
or
.I file
to standard output for
analysis or postprocessing in XML format.
XML formated metadata can be fed into era_restore (see
.BR era_restore(8) )
in order to put it back onto a metadata
.I device
(to process by the device-mapper target) or
.I file.
This tool cannot be run on live metadata.
.IP "\fB\-\-repair\fP".
Repair the metadata whilst dumping it.
.IP "\fB\-h, \-\-help\fP".
Print help and exit.
.IP "\fB\-V, \-\-version\fP".
Output version information and exit.
.IP "\fB\-\-logical\fP".
Fold any unprocessed write sets into the final era array. You
probably want to do this if you're intending to process the results as
it simplifies the XML.
.IP "\fB-o \fI{xml file}\fP"
Specify a file for the output rather than writing to stdout.
.SH EXAMPLES
Dumps era metadata on logical volume /dev/vg/metadata
to standard output in XML format:
.sp
.B era_dump /dev/vg/metadata
.SH DIAGNOSTICS
.B era_dump
returns an exit code of 0 for success or 1 for error.
.SH SEE ALSO
.B era_check(8)
.B era_repair(8)
.B era_restore(8)
.B era_invalidate(8)
.SH AUTHOR
Joe Thornber <ejt@redhat.com>