1PMEMPOOL-DUMP(1) PMDK Programmer's Manual PMEMPOOL-DUMP(1)
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6 pmempool-dump - dump user data from persistent memory pool
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9 $ pmempool dump [<options>] <file>
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12 The pmempool invoked with dump command dumps user data from specified
13 pool file. The output format may be either binary or hexadecimal.
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15 By default the output format is hexadecimal.
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17 By default data is dumped to standard output. It is possible to dump
18 data to other file by specifying -o option. In this case data will be
19 appended to this file.
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21 Using -r option you can specify number of blocks/bytes/data chunks us‐
22 ing special text format. See RANGE section for details.
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24 Available options:
25 -b, --binary
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27 Dump data in binary format.
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29 -r, --range <range>
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31 Range of pool file to dump. This may be number of blocks for blk pool
32 type or either number of bytes or number of data chunks for log pool
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35 -c, --chunk <size>
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37 Size of chunk for log pool type. See pmemlog_walk(3) in libpmemlog(7)
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40 -o, --output <file>
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42 Name of output file.
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44 -h, --help
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46 Display help message and exit.
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49 Using -r, –range option it is possible to dump only a range of user da‐
50 ta. This section describes valid format of <range> string.
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52 You can specify multiple ranges separated by commas.
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54 <first>-<last>
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56 All blocks/bytes/data chunks from <first> to <last> will be dumped.
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58 -<last>
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60 All blocks/bytes/data chunks up to <last> will be dumped.
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62 <first>-
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64 All blocks/bytes/data chunks starting from <first> will be dumped.
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66 <number>
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68 Only <number> block/byte/data chunk will be dumped.
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71 $ pmempool dump pool.bin
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73 Dump user data from pool.bin file to standard output
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75 $ pmempool dump -o output.bin -r1,10-100 pool_blk.bin
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77 Dump block number 1 and blocks from 10 to 100 from pool_blk.bin con‐
78 taining pmem blk pool to output.bin file
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80 $ pmempool dump -r 1K-2K pool.bin
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82 Dump data form 1K to 2K from pool.bin file.
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85 pmempool(1), libpmemblk(7), libpmemlog(7), libpmemobj(7) and
86 <http://pmem.io>
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90PMDK - pmem Tools version 1.4 2019-03-01 PMEMPOOL-DUMP(1)