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.TH MDB_COPY 1 "2012/12/12" "LMDB 0.9.5"
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.\" Copyright 2012 Howard Chu, Symas Corp. All Rights Reserved.
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.\" Copying restrictions apply. See COPYRIGHT/LICENSE.
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.SH NAME
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mdb_copy \- LMDB environment copy tool
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.SH SYNOPSIS
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.B mdb_copy
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.I srcpath\ [dstpath]
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.SH DESCRIPTION
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The
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.B mdb_copy
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utility copies an LMDB environment. The environment can
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be copied regardless of whether it is currently in use.
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No lockfile is created, since it gets recreated at need.
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If
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.I dstpath
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is specified it must be the path of an empty directory
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for storing the backup. Otherwise, the backup will be
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written to stdout.
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.SH DIAGNOSTICS
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Exit status is zero if no errors occur.
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Errors result in a non-zero exit status and
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a diagnostic message being written to standard error.
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.SH CAVEATS
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This utility can trigger significant file size growth if run
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in parallel with write transactions, because pages which they
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free during copying cannot be reused until the copy is done.
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.SH "SEE ALSO"
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.BR mdb_stat (1)
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.SH AUTHOR
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Howard Chu of Symas Corporation <http://www.symas.com>
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