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Lu, Huayi
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Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com> Co-authored-by: Lu, Huayi <luhuayi@huawei.com> Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
20 lines
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20 lines
3.0 KiB
HTML
<a name="EN-US_TOPIC_0000001510162785"></a><a name="EN-US_TOPIC_0000001510162785"></a>
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<h1 class="topictitle1">Standby Server</h1>
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<div id="body8662426"><div class="section" id="EN-US_TOPIC_0000001510162785__section1575145015549"><h4 class="sectiontitle">build_backup_param</h4><p id="EN-US_TOPIC_0000001510162785__p15751050135418"><strong id="EN-US_TOPIC_0000001510162785__b946416553518">Parameter description</strong>: Specifies the minimum specifications for disk backup during incremental build.</p>
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<p id="EN-US_TOPIC_0000001510162785__p1875135065411"><strong id="EN-US_TOPIC_0000001510162785__b924916316513">Type</strong>: SIGHUP</p>
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<p id="EN-US_TOPIC_0000001510162785__p27505065413"><strong id="EN-US_TOPIC_0000001510162785__b168237412517">Value range</strong>: a string</p>
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<p id="EN-US_TOPIC_0000001510162785__p1875950125412"><strong id="EN-US_TOPIC_0000001510162785__b107611945171915">Default value</strong>: (1%, 1G, 1G)</p>
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<div class="note" id="EN-US_TOPIC_0000001510162785__n9c540fa6612147d3ab5b579393e6c5bb"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0000001510162785__p43998361403">This parameter specifies whether the <strong id="EN-US_TOPIC_0000001510162785__b10824754114314">pg_rewind_bak</strong> directory is generated during incremental build. The character string takes effect only when it is configured in the 'x %, yG, zG' format. This parameter is valid only when <strong id="EN-US_TOPIC_0000001510162785__b17489151219478">gs_guc set</strong> is set to a valid value. <strong id="EN-US_TOPIC_0000001510162785__b448910449210">x</strong> indicates the percentage of minimum remaining space, <strong id="EN-US_TOPIC_0000001510162785__b103702493215">y</strong> indicates the minimum remaining space, and <strong id="EN-US_TOPIC_0000001510162785__b375414531623">z</strong> indicates the total disk space.</p>
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<p id="EN-US_TOPIC_0000001510162785__p340015361014">The <strong id="EN-US_TOPIC_0000001510162785__b933314514620">pg_rewind_bak</strong> file is generated and backed up only when both of the following conditions are met:</p>
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<ul id="EN-US_TOPIC_0000001510162785__ul18400163615014"><li id="EN-US_TOPIC_0000001510162785__li98911483443">Condition 1: The total disk capacity is greater than or equals to <strong id="EN-US_TOPIC_0000001510162785__b428213384618">z</strong> GB. If this condition is not met, the backup is not performed. If this condition is met, the system continues to check condition 2.</li><li id="EN-US_TOPIC_0000001510162785__li54001336702">Condition 2: The remaining disk space is greater than or equals to <strong id="EN-US_TOPIC_0000001510162785__b133831757144616">y</strong> GB and the percentage of the remaining disk space is greater than or equals to <strong id="EN-US_TOPIC_0000001510162785__b1888393864710">x %</strong>.</li></ul>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_04_0904.html">HA Replication</a></div>
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