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<div id="projectname">libaaruformat<span id="projectnumber">&#160;1.0</span>
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<div id="projectbrief">Aaru Data Preservation Suite - Format Library</div>
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<a href="erasure_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> * This file is part of the Aaru Data Preservation Suite.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> * Copyright (c) 2019-2026 Natalia Portillo.</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> *</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> * This library is free software; you can redistribute it and/or modify</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> * it under the terms of the GNU Lesser General Public License as</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> * published by the Free Software Foundation; either version 2.1 of the</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> * License, or (at your option) any later version.</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"> *</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> * This library is distributed in the hope that it will be useful, but</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"> * Lesser General Public License for more details.</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment"> *</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> * License along with this library; if not, see &lt;http://www.gnu.org/licenses/&gt;.</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment"> */</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#ifndef LIBAARUFORMAT_ERASURE_H</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#define LIBAARUFORMAT_ERASURE_H</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include &lt;stdint.h&gt;</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#pragma pack(push, 1)</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span></div>
<div class="foldopen" id="foldopen00049" data-start="{" data-end="};">
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"><a class="line" href="structErasureCodingMapHeader.html"> 49</a></span><span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code hl_struct" href="structErasureCodingMapHeader.html">ErasureCodingMapHeader</a></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span>{</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"><a class="line" href="structErasureCodingMapHeader.html#ac1cce17abac0be6beccb121d7a3b24b2"> 51</a></span> uint32_t <a class="code hl_variable" href="structErasureCodingMapHeader.html#ac1cce17abac0be6beccb121d7a3b24b2">identifier</a>; </div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"><a class="line" href="structErasureCodingMapHeader.html#a174d1be87a00bda3012715de76423ec4"> 52</a></span> uint8_t <a class="code hl_variable" href="structErasureCodingMapHeader.html#a174d1be87a00bda3012715de76423ec4">algorithm</a>; </div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"><a class="line" href="structErasureCodingMapHeader.html#accae80e978eeccc7c026eb5ade721aae"> 53</a></span> uint8_t <a class="code hl_variable" href="structErasureCodingMapHeader.html#accae80e978eeccc7c026eb5ade721aae">stripeGroupCount</a>; </div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"><a class="line" href="structErasureCodingMapHeader.html#aaf860b67807c5bf871e52ae617a076ae"> 54</a></span> uint16_t <a class="code hl_variable" href="structErasureCodingMapHeader.html#aaf860b67807c5bf871e52ae617a076ae">compression</a>; </div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"><a class="line" href="structErasureCodingMapHeader.html#a2aa7763da110a8e7550e61bd6110f83d"> 55</a></span> uint64_t <a class="code hl_variable" href="structErasureCodingMapHeader.html#a2aa7763da110a8e7550e61bd6110f83d">cmpLength</a>; </div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"><a class="line" href="structErasureCodingMapHeader.html#ad52f12a467a76189e31b1c01fc0e6e65"> 56</a></span> uint64_t <a class="code hl_variable" href="structErasureCodingMapHeader.html#ad52f12a467a76189e31b1c01fc0e6e65">length</a>; </div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"><a class="line" href="structErasureCodingMapHeader.html#aa686c5c90093d0ba86657c1f15f64a2d"> 57</a></span> uint64_t <a class="code hl_variable" href="structErasureCodingMapHeader.html#aa686c5c90093d0ba86657c1f15f64a2d">cmpCrc64</a>; </div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"><a class="line" href="structErasureCodingMapHeader.html#aa883d1e565b1856a7a16b2fcf8ee8b7d"> 58</a></span> uint64_t <a class="code hl_variable" href="structErasureCodingMapHeader.html#aa883d1e565b1856a7a16b2fcf8ee8b7d">crc64</a>; </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"><a class="line" href="erasure_8h.html#a64548f862129373162410063b075407d"> 59</a></span>} <a class="code hl_struct" href="structErasureCodingMapHeader.html">ErasureCodingMapHeader</a>;</div>
</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span></div>
<div class="foldopen" id="foldopen00068" data-start="{" data-end="};">
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"><a class="line" href="structStripeGroupDescriptor.html"> 68</a></span><span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code hl_struct" href="structStripeGroupDescriptor.html">StripeGroupDescriptor</a></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span>{</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"><a class="line" href="structStripeGroupDescriptor.html#a6093f8c41fb1aa55c8367e2a92fe9f7f"> 70</a></span> uint8_t <a class="code hl_variable" href="structStripeGroupDescriptor.html#a6093f8c41fb1aa55c8367e2a92fe9f7f">groupType</a>; </div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"><a class="line" href="structStripeGroupDescriptor.html#a46b938eb0fea65843e741c2cc240d14b"> 71</a></span> uint16_t <a class="code hl_variable" href="structStripeGroupDescriptor.html#a46b938eb0fea65843e741c2cc240d14b">K</a>; </div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"><a class="line" href="structStripeGroupDescriptor.html#afd47dcff7fe194084c22dab9a6866c8b"> 72</a></span> uint16_t <a class="code hl_variable" href="structStripeGroupDescriptor.html#afd47dcff7fe194084c22dab9a6866c8b">M</a>; </div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"><a class="line" href="structStripeGroupDescriptor.html#a2a457b42f8562c872b0b7e0f1b054ef5"> 73</a></span> uint32_t <a class="code hl_variable" href="structStripeGroupDescriptor.html#a2a457b42f8562c872b0b7e0f1b054ef5">shardSize</a>; </div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"><a class="line" href="structStripeGroupDescriptor.html#a9b737c4f6fda1894d51858d2a3d8d877"> 74</a></span> uint32_t <a class="code hl_variable" href="structStripeGroupDescriptor.html#a9b737c4f6fda1894d51858d2a3d8d877">stripeCount</a>; </div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"><a class="line" href="structStripeGroupDescriptor.html#a747366878bf9d2d68b37fddc30346546"> 75</a></span> uint16_t <a class="code hl_variable" href="structStripeGroupDescriptor.html#a747366878bf9d2d68b37fddc30346546">interleaveDepth</a>; </div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"><a class="line" href="erasure_8h.html#ac25c99c6e5ecfd7c49c64311af5cdad1"> 76</a></span>} <a class="code hl_struct" href="structStripeGroupDescriptor.html">StripeGroupDescriptor</a>;</div>
</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span></div>
<div class="foldopen" id="foldopen00087" data-start="{" data-end="};">
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"><a class="line" href="structStripeDataBlockEntry.html"> 87</a></span><span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code hl_struct" href="structStripeDataBlockEntry.html">StripeDataBlockEntry</a></div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span>{</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"><a class="line" href="structStripeDataBlockEntry.html#a7aac714b3d98b543e792537fd7c8d3fc"> 89</a></span> uint64_t <a class="code hl_variable" href="structStripeDataBlockEntry.html#a7aac714b3d98b543e792537fd7c8d3fc">offset</a>; </div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"><a class="line" href="structStripeDataBlockEntry.html#a3351d43103f9f7fbd9f4486161a1656d"> 90</a></span> uint32_t <a class="code hl_variable" href="structStripeDataBlockEntry.html#a3351d43103f9f7fbd9f4486161a1656d">onDiskSize</a>; </div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"><a class="line" href="structStripeDataBlockEntry.html#af85494afc772fe1469927c826e24a1b2"> 91</a></span> uint64_t <a class="code hl_variable" href="structStripeDataBlockEntry.html#af85494afc772fe1469927c826e24a1b2">shardCrc64</a>; </div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"><a class="line" href="erasure_8h.html#a1c3217fdeb4bd39852ef4d7e6d2f5be8"> 92</a></span>} <a class="code hl_struct" href="structStripeDataBlockEntry.html">StripeDataBlockEntry</a>;</div>
</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span></div>
<div class="foldopen" id="foldopen00098" data-start="{" data-end="};">
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"><a class="line" href="structStripeParityBlockEntry.html"> 98</a></span><span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code hl_struct" href="structStripeParityBlockEntry.html">StripeParityBlockEntry</a></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span>{</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"><a class="line" href="structStripeParityBlockEntry.html#a4222801a62acbce61990ee79faf26050"> 100</a></span> uint64_t <a class="code hl_variable" href="structStripeParityBlockEntry.html#a4222801a62acbce61990ee79faf26050">offset</a>; </div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"><a class="line" href="erasure_8h.html#a5a8ebe521e0c137d7a5428ed81bce865"> 101</a></span>} <a class="code hl_struct" href="structStripeParityBlockEntry.html">StripeParityBlockEntry</a>;</div>
</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span></div>
<div class="foldopen" id="foldopen00116" data-start="{" data-end="};">
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"><a class="line" href="structAaruRecoveryFooter.html"> 116</a></span><span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code hl_struct" href="structAaruRecoveryFooter.html">AaruRecoveryFooter</a></div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span>{</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"><a class="line" href="structAaruRecoveryFooter.html#a67e4601f7be9a5f7e84cb3adfb98e68a"> 118</a></span> uint64_t <a class="code hl_variable" href="structAaruRecoveryFooter.html#a67e4601f7be9a5f7e84cb3adfb98e68a">ecmbOffset</a>; </div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"><a class="line" href="structAaruRecoveryFooter.html#ad3f4ad3842317379eea5ad1bd3335482"> 119</a></span> uint64_t <a class="code hl_variable" href="structAaruRecoveryFooter.html#ad3f4ad3842317379eea5ad1bd3335482">ecmbLength</a>; </div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"><a class="line" href="structAaruRecoveryFooter.html#a2a0e7425f369422c197cda6b4ff56033"> 120</a></span> uint64_t <a class="code hl_variable" href="structAaruRecoveryFooter.html#a2a0e7425f369422c197cda6b4ff56033">headerCrc64</a>; </div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"><a class="line" href="structAaruRecoveryFooter.html#afd53d818d8d4f4c23e4483bfea1701f5"> 121</a></span> <a class="code hl_struct" href="structAaruHeaderV2.html">AaruHeaderV2</a> <a class="code hl_variable" href="structAaruRecoveryFooter.html#afd53d818d8d4f4c23e4483bfea1701f5">backupHeader</a>; </div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"><a class="line" href="structAaruRecoveryFooter.html#a8d65cec53b91b52d2bafb7e76eef818a"> 122</a></span> uint64_t <a class="code hl_variable" href="structAaruRecoveryFooter.html#a8d65cec53b91b52d2bafb7e76eef818a">footerMagic</a>; </div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"><a class="line" href="erasure_8h.html#a97f88bc6be747afa7117a086aab3ba91"> 123</a></span>} <a class="code hl_struct" href="structAaruRecoveryFooter.html">AaruRecoveryFooter</a>;</div>
</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> </div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span><span class="preprocessor">#pragma pack(pop)</span></div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> </div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span><span class="preprocessor">#endif </span><span class="comment">/* LIBAARUFORMAT_ERASURE_H */</span><span class="preprocessor"></span></div>
<div class="ttc" id="astructAaruHeaderV2_html"><div class="ttname"><a href="structAaruHeaderV2.html">AaruHeaderV2</a></div><div class="ttdoc">Version 2 container header with GUID, alignment shifts, and feature negotiation bitmaps.</div><div class="ttdef"><b>Definition</b> <a href="header_8h_source.html#l00106">header.h:107</a></div></div>
<div class="ttc" id="astructAaruRecoveryFooter_html"><div class="ttname"><a href="structAaruRecoveryFooter.html">AaruRecoveryFooter</a></div><div class="ttdoc">Recovery footer written at the very end of the file (last 160 bytes).</div><div class="ttdef"><b>Definition</b> <a href="#l00116">erasure.h:117</a></div></div>
<div class="ttc" id="astructAaruRecoveryFooter_html_a2a0e7425f369422c197cda6b4ff56033"><div class="ttname"><a href="structAaruRecoveryFooter.html#a2a0e7425f369422c197cda6b4ff56033">AaruRecoveryFooter::headerCrc64</a></div><div class="ttdeci">uint64_t headerCrc64</div><div class="ttdoc">CRC64-ECMA of the original AaruHeaderV2 (128 bytes at offset 0).</div><div class="ttdef"><b>Definition</b> <a href="#l00120">erasure.h:120</a></div></div>
<div class="ttc" id="astructAaruRecoveryFooter_html_a67e4601f7be9a5f7e84cb3adfb98e68a"><div class="ttname"><a href="structAaruRecoveryFooter.html#a67e4601f7be9a5f7e84cb3adfb98e68a">AaruRecoveryFooter::ecmbOffset</a></div><div class="ttdeci">uint64_t ecmbOffset</div><div class="ttdoc">Absolute file offset of the primary ECMB.</div><div class="ttdef"><b>Definition</b> <a href="#l00118">erasure.h:118</a></div></div>
<div class="ttc" id="astructAaruRecoveryFooter_html_a8d65cec53b91b52d2bafb7e76eef818a"><div class="ttname"><a href="structAaruRecoveryFooter.html#a8d65cec53b91b52d2bafb7e76eef818a">AaruRecoveryFooter::footerMagic</a></div><div class="ttdeci">uint64_t footerMagic</div><div class="ttdoc">Must be AARU_RECOVERY_FOOTER_MAGIC (0x52464D4345525641).</div><div class="ttdef"><b>Definition</b> <a href="#l00122">erasure.h:122</a></div></div>
<div class="ttc" id="astructAaruRecoveryFooter_html_ad3f4ad3842317379eea5ad1bd3335482"><div class="ttname"><a href="structAaruRecoveryFooter.html#ad3f4ad3842317379eea5ad1bd3335482">AaruRecoveryFooter::ecmbLength</a></div><div class="ttdeci">uint64_t ecmbLength</div><div class="ttdoc">Total on-disk size of the ECMB (header + payload).</div><div class="ttdef"><b>Definition</b> <a href="#l00119">erasure.h:119</a></div></div>
<div class="ttc" id="astructAaruRecoveryFooter_html_afd53d818d8d4f4c23e4483bfea1701f5"><div class="ttname"><a href="structAaruRecoveryFooter.html#afd53d818d8d4f4c23e4483bfea1701f5">AaruRecoveryFooter::backupHeader</a></div><div class="ttdeci">AaruHeaderV2 backupHeader</div><div class="ttdoc">Complete copy of AaruHeaderV2 from file offset 0.</div><div class="ttdef"><b>Definition</b> <a href="#l00121">erasure.h:121</a></div></div>
<div class="ttc" id="astructErasureCodingMapHeader_html"><div class="ttname"><a href="structErasureCodingMapHeader.html">ErasureCodingMapHeader</a></div><div class="ttdoc">Header for the Erasure Coding Map Block (BlockType::ErasureCodingMapBlock).</div><div class="ttdef"><b>Definition</b> <a href="#l00049">erasure.h:50</a></div></div>
<div class="ttc" id="astructErasureCodingMapHeader_html_a174d1be87a00bda3012715de76423ec4"><div class="ttname"><a href="structErasureCodingMapHeader.html#a174d1be87a00bda3012715de76423ec4">ErasureCodingMapHeader::algorithm</a></div><div class="ttdeci">uint8_t algorithm</div><div class="ttdoc">Erasure coding algorithm (ErasureCodingAlgorithm).</div><div class="ttdef"><b>Definition</b> <a href="#l00052">erasure.h:52</a></div></div>
<div class="ttc" id="astructErasureCodingMapHeader_html_a2aa7763da110a8e7550e61bd6110f83d"><div class="ttname"><a href="structErasureCodingMapHeader.html#a2aa7763da110a8e7550e61bd6110f83d">ErasureCodingMapHeader::cmpLength</a></div><div class="ttdeci">uint64_t cmpLength</div><div class="ttdoc">Size in bytes of the compressed mapping payload.</div><div class="ttdef"><b>Definition</b> <a href="#l00055">erasure.h:55</a></div></div>
<div class="ttc" id="astructErasureCodingMapHeader_html_aa686c5c90093d0ba86657c1f15f64a2d"><div class="ttname"><a href="structErasureCodingMapHeader.html#aa686c5c90093d0ba86657c1f15f64a2d">ErasureCodingMapHeader::cmpCrc64</a></div><div class="ttdeci">uint64_t cmpCrc64</div><div class="ttdoc">CRC64-ECMA of the compressed mapping payload.</div><div class="ttdef"><b>Definition</b> <a href="#l00057">erasure.h:57</a></div></div>
<div class="ttc" id="astructErasureCodingMapHeader_html_aa883d1e565b1856a7a16b2fcf8ee8b7d"><div class="ttname"><a href="structErasureCodingMapHeader.html#aa883d1e565b1856a7a16b2fcf8ee8b7d">ErasureCodingMapHeader::crc64</a></div><div class="ttdeci">uint64_t crc64</div><div class="ttdoc">CRC64-ECMA of the uncompressed mapping payload.</div><div class="ttdef"><b>Definition</b> <a href="#l00058">erasure.h:58</a></div></div>
<div class="ttc" id="astructErasureCodingMapHeader_html_aaf860b67807c5bf871e52ae617a076ae"><div class="ttname"><a href="structErasureCodingMapHeader.html#aaf860b67807c5bf871e52ae617a076ae">ErasureCodingMapHeader::compression</a></div><div class="ttdeci">uint16_t compression</div><div class="ttdoc">Compression algorithm for the mapping payload (CompressionType).</div><div class="ttdef"><b>Definition</b> <a href="#l00054">erasure.h:54</a></div></div>
<div class="ttc" id="astructErasureCodingMapHeader_html_ac1cce17abac0be6beccb121d7a3b24b2"><div class="ttname"><a href="structErasureCodingMapHeader.html#ac1cce17abac0be6beccb121d7a3b24b2">ErasureCodingMapHeader::identifier</a></div><div class="ttdeci">uint32_t identifier</div><div class="ttdoc">Block identifier, must be BlockType::ErasureCodingMapBlock (0x424D4345).</div><div class="ttdef"><b>Definition</b> <a href="#l00051">erasure.h:51</a></div></div>
<div class="ttc" id="astructErasureCodingMapHeader_html_accae80e978eeccc7c026eb5ade721aae"><div class="ttname"><a href="structErasureCodingMapHeader.html#accae80e978eeccc7c026eb5ade721aae">ErasureCodingMapHeader::stripeGroupCount</a></div><div class="ttdeci">uint8_t stripeGroupCount</div><div class="ttdoc">Number of stripe groups in payload (typically 5).</div><div class="ttdef"><b>Definition</b> <a href="#l00053">erasure.h:53</a></div></div>
<div class="ttc" id="astructErasureCodingMapHeader_html_ad52f12a467a76189e31b1c01fc0e6e65"><div class="ttname"><a href="structErasureCodingMapHeader.html#ad52f12a467a76189e31b1c01fc0e6e65">ErasureCodingMapHeader::length</a></div><div class="ttdeci">uint64_t length</div><div class="ttdoc">Size in bytes of the uncompressed mapping payload.</div><div class="ttdef"><b>Definition</b> <a href="#l00056">erasure.h:56</a></div></div>
<div class="ttc" id="astructStripeDataBlockEntry_html"><div class="ttname"><a href="structStripeDataBlockEntry.html">StripeDataBlockEntry</a></div><div class="ttdoc">Per-data-block metadata within a stripe descriptor.</div><div class="ttdef"><b>Definition</b> <a href="#l00087">erasure.h:88</a></div></div>
<div class="ttc" id="astructStripeDataBlockEntry_html_a3351d43103f9f7fbd9f4486161a1656d"><div class="ttname"><a href="structStripeDataBlockEntry.html#a3351d43103f9f7fbd9f4486161a1656d">StripeDataBlockEntry::onDiskSize</a></div><div class="ttdeci">uint32_t onDiskSize</div><div class="ttdoc">Actual on-disk bytes (sizeof(header) + cmpLength).</div><div class="ttdef"><b>Definition</b> <a href="#l00090">erasure.h:90</a></div></div>
<div class="ttc" id="astructStripeDataBlockEntry_html_a7aac714b3d98b543e792537fd7c8d3fc"><div class="ttname"><a href="structStripeDataBlockEntry.html#a7aac714b3d98b543e792537fd7c8d3fc">StripeDataBlockEntry::offset</a></div><div class="ttdeci">uint64_t offset</div><div class="ttdoc">Absolute file offset of the block.</div><div class="ttdef"><b>Definition</b> <a href="#l00089">erasure.h:89</a></div></div>
<div class="ttc" id="astructStripeDataBlockEntry_html_af85494afc772fe1469927c826e24a1b2"><div class="ttname"><a href="structStripeDataBlockEntry.html#af85494afc772fe1469927c826e24a1b2">StripeDataBlockEntry::shardCrc64</a></div><div class="ttdeci">uint64_t shardCrc64</div><div class="ttdoc">CRC64-ECMA of on-disk bytes zero-padded to shardSize.</div><div class="ttdef"><b>Definition</b> <a href="#l00091">erasure.h:91</a></div></div>
<div class="ttc" id="astructStripeGroupDescriptor_html"><div class="ttname"><a href="structStripeGroupDescriptor.html">StripeGroupDescriptor</a></div><div class="ttdoc">Describes one protection group within the ECMB payload.</div><div class="ttdef"><b>Definition</b> <a href="#l00068">erasure.h:69</a></div></div>
<div class="ttc" id="astructStripeGroupDescriptor_html_a2a457b42f8562c872b0b7e0f1b054ef5"><div class="ttname"><a href="structStripeGroupDescriptor.html#a2a457b42f8562c872b0b7e0f1b054ef5">StripeGroupDescriptor::shardSize</a></div><div class="ttdeci">uint32_t shardSize</div><div class="ttdoc">Fixed shard size in bytes (max possible on-disk block size for this group).</div><div class="ttdef"><b>Definition</b> <a href="#l00073">erasure.h:73</a></div></div>
<div class="ttc" id="astructStripeGroupDescriptor_html_a46b938eb0fea65843e741c2cc240d14b"><div class="ttname"><a href="structStripeGroupDescriptor.html#a46b938eb0fea65843e741c2cc240d14b">StripeGroupDescriptor::K</a></div><div class="ttdeci">uint16_t K</div><div class="ttdoc">Number of data blocks per stripe.</div><div class="ttdef"><b>Definition</b> <a href="#l00071">erasure.h:71</a></div></div>
<div class="ttc" id="astructStripeGroupDescriptor_html_a6093f8c41fb1aa55c8367e2a92fe9f7f"><div class="ttname"><a href="structStripeGroupDescriptor.html#a6093f8c41fb1aa55c8367e2a92fe9f7f">StripeGroupDescriptor::groupType</a></div><div class="ttdeci">uint8_t groupType</div><div class="ttdoc">Protection group type (ErasureCodingGroupType).</div><div class="ttdef"><b>Definition</b> <a href="#l00070">erasure.h:70</a></div></div>
<div class="ttc" id="astructStripeGroupDescriptor_html_a747366878bf9d2d68b37fddc30346546"><div class="ttname"><a href="structStripeGroupDescriptor.html#a747366878bf9d2d68b37fddc30346546">StripeGroupDescriptor::interleaveDepth</a></div><div class="ttdeci">uint16_t interleaveDepth</div><div class="ttdoc">Interleave depth D (K for full interleave, 1 for consecutive).</div><div class="ttdef"><b>Definition</b> <a href="#l00075">erasure.h:75</a></div></div>
<div class="ttc" id="astructStripeGroupDescriptor_html_a9b737c4f6fda1894d51858d2a3d8d877"><div class="ttname"><a href="structStripeGroupDescriptor.html#a9b737c4f6fda1894d51858d2a3d8d877">StripeGroupDescriptor::stripeCount</a></div><div class="ttdeci">uint32_t stripeCount</div><div class="ttdoc">Number of stripes in this group.</div><div class="ttdef"><b>Definition</b> <a href="#l00074">erasure.h:74</a></div></div>
<div class="ttc" id="astructStripeGroupDescriptor_html_afd47dcff7fe194084c22dab9a6866c8b"><div class="ttname"><a href="structStripeGroupDescriptor.html#afd47dcff7fe194084c22dab9a6866c8b">StripeGroupDescriptor::M</a></div><div class="ttdeci">uint16_t M</div><div class="ttdoc">Number of parity blocks per stripe.</div><div class="ttdef"><b>Definition</b> <a href="#l00072">erasure.h:72</a></div></div>
<div class="ttc" id="astructStripeParityBlockEntry_html"><div class="ttname"><a href="structStripeParityBlockEntry.html">StripeParityBlockEntry</a></div><div class="ttdoc">Per-parity-block metadata within a stripe descriptor.</div><div class="ttdef"><b>Definition</b> <a href="#l00098">erasure.h:99</a></div></div>
<div class="ttc" id="astructStripeParityBlockEntry_html_a4222801a62acbce61990ee79faf26050"><div class="ttname"><a href="structStripeParityBlockEntry.html#a4222801a62acbce61990ee79faf26050">StripeParityBlockEntry::offset</a></div><div class="ttdeci">uint64_t offset</div><div class="ttdoc">Absolute file offset of the parity DBLK.</div><div class="ttdef"><b>Definition</b> <a href="#l00100">erasure.h:100</a></div></div>
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