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mdb_copy: Does not copy lockfile. Can trigger file growth. mdb_txn_begin(): Clarify usage restrictions. mdb_drop(): State what to do rather than what will be done, since closing the handle could otherwise be read as happening even at failure.
34 lines
1.0 KiB
Groff
34 lines
1.0 KiB
Groff
.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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