snapraid/cov/cmdline/thermal.c.gcov.html
Andrea Mazzoleni a53ac4a175 Auto update
2026-03-15 18:52:43 +01:00

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<td width="35%" class="headerValue"><a href="../index.html">top level</a> - <a href="index.html">cmdline</a> - thermal.c<span style="font-size: 80%;"> (source / <a href="thermal.c.func-sort-c.html">functions</a>)</span></td>
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<td class="headerValue">lcov.info</td>
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<td class="headerItem">Lines:</td>
<td class="headerCovTableEntry">155</td>
<td class="headerCovTableEntry">187</td>
<td class="headerCovTableEntryMed">82.9 %</td>
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<td class="headerItem">Date:</td>
<td class="headerValue">2026-03-15 15:58:19</td>
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<td class="headerItem">Functions:</td>
<td class="headerCovTableEntry">6</td>
<td class="headerCovTableEntry">7</td>
<td class="headerCovTableEntryMed">85.7 %</td>
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<pre class="sourceHeading"> Line data Source code</pre>
<pre class="source">
<a name="1"><span class="lineNum"> 1 </span> : /*</a>
<a name="2"><span class="lineNum"> 2 </span> : * Copyright (C) 2025 Andrea Mazzoleni</a>
<a name="3"><span class="lineNum"> 3 </span> : *</a>
<a name="4"><span class="lineNum"> 4 </span> : * This program is free software: you can redistribute it and/or modify</a>
<a name="5"><span class="lineNum"> 5 </span> : * it under the terms of the GNU General Public License as published by</a>
<a name="6"><span class="lineNum"> 6 </span> : * the Free Software Foundation, either version 3 of the License, or</a>
<a name="7"><span class="lineNum"> 7 </span> : * (at your option) any later version.</a>
<a name="8"><span class="lineNum"> 8 </span> : *</a>
<a name="9"><span class="lineNum"> 9 </span> : * This program is distributed in the hope that it will be useful,</a>
<a name="10"><span class="lineNum"> 10 </span> : * but WITHOUT ANY WARRANTY; without even the implied warranty of</a>
<a name="11"><span class="lineNum"> 11 </span> : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</a>
<a name="12"><span class="lineNum"> 12 </span> : * GNU General Public License for more details.</a>
<a name="13"><span class="lineNum"> 13 </span> : *</a>
<a name="14"><span class="lineNum"> 14 </span> : * You should have received a copy of the GNU General Public License</a>
<a name="15"><span class="lineNum"> 15 </span> : * along with this program. If not, see &lt;http://www.gnu.org/licenses/&gt;.</a>
<a name="16"><span class="lineNum"> 16 </span> : */</a>
<a name="17"><span class="lineNum"> 17 </span> : </a>
<a name="18"><span class="lineNum"> 18 </span> : #include &quot;portable.h&quot;</a>
<a name="19"><span class="lineNum"> 19 </span> : </a>
<a name="20"><span class="lineNum"> 20 </span> : #include &quot;thermal.h&quot;</a>
<a name="21"><span class="lineNum"> 21 </span> : #include &quot;state.h&quot;</a>
<a name="22"><span class="lineNum"> 22 </span> : #include &quot;io.h&quot;</a>
<a name="23"><span class="lineNum"> 23 </span> : </a>
<a name="24"><span class="lineNum"> 24 </span> : #include &lt;math.h&gt;</a>
<a name="25"><span class="lineNum"> 25 </span> : </a>
<a name="26"><span class="lineNum"> 26 </span><span class="lineCov"> 30 : struct snapraid_thermal* thermal_alloc(uint64_t dev, const char* name)</span></a>
<a name="27"><span class="lineNum"> 27 </span> : {</a>
<a name="28"><span class="lineNum"> 28 </span><span class="lineCov"> 30 : struct snapraid_thermal* thermal = malloc_nofail(sizeof(struct snapraid_thermal));</span></a>
<a name="29"><span class="lineNum"> 29 </span> : </a>
<a name="30"><span class="lineNum"> 30 </span><span class="lineCov"> 30 : thermal-&gt;device = dev;</span></a>
<a name="31"><span class="lineNum"> 31 </span><span class="lineCov"> 30 : thermal-&gt;latest_temperature = 0;</span></a>
<a name="32"><span class="lineNum"> 32 </span><span class="lineCov"> 30 : thermal-&gt;count = 0;</span></a>
<a name="33"><span class="lineNum"> 33 </span><span class="lineCov"> 30 : pathcpy(thermal-&gt;name, sizeof(thermal-&gt;name), name);</span></a>
<a name="34"><span class="lineNum"> 34 </span> : </a>
<a name="35"><span class="lineNum"> 35 </span><span class="lineCov"> 30 : return thermal;</span></a>
<a name="36"><span class="lineNum"> 36 </span> : }</a>
<a name="37"><span class="lineNum"> 37 </span> : </a>
<a name="38"><span class="lineNum"> 38 </span><span class="lineCov"> 30 : void thermal_free(struct snapraid_thermal* thermal)</span></a>
<a name="39"><span class="lineNum"> 39 </span> : {</a>
<a name="40"><span class="lineNum"> 40 </span><span class="lineCov"> 30 : free(thermal);</span></a>
<a name="41"><span class="lineNum"> 41 </span><span class="lineCov"> 30 : }</span></a>
<a name="42"><span class="lineNum"> 42 </span> : </a>
<a name="43"><span class="lineNum"> 43 </span> : /*</a>
<a name="44"><span class="lineNum"> 44 </span> : * Fit exponential heating model to data using least squares</a>
<a name="45"><span class="lineNum"> 45 </span> : */</a>
<a name="46"><span class="lineNum"> 46 </span><span class="lineCov"> 30 : struct snapraid_thermal_params fit_thermal_model(const struct snapraid_thermal_point* points, int n_points, double t_ambient)</span></a>
<a name="47"><span class="lineNum"> 47 </span> : {</a>
<a name="48"><span class="lineNum"> 48 </span> : struct snapraid_thermal_params model;</a>
<a name="49"><span class="lineNum"> 49 </span> : double t_steady_try;</a>
<a name="50"><span class="lineNum"> 50 </span> : double k_try;</a>
<a name="51"><span class="lineNum"> 51 </span> : </a>
<a name="52"><span class="lineNum"> 52 </span><span class="lineCov"> 30 : memset(&amp;model, 0, sizeof(model));</span></a>
<a name="53"><span class="lineNum"> 53 </span> : </a>
<a name="54"><span class="lineNum"> 54 </span><span class="lineCov"> 30 : model.t_ambient = t_ambient;</span></a>
<a name="55"><span class="lineNum"> 55 </span> : </a>
<a name="56"><span class="lineNum"> 56 </span> : /* at least four points to have a result */</a>
<a name="57"><span class="lineNum"> 57 </span><span class="lineCov"> 30 : if (n_points &lt; 4)</span></a>
<a name="58"><span class="lineNum"> 58 </span><span class="lineNoCov"> 0 : return model;</span></a>
<a name="59"><span class="lineNum"> 59 </span> : </a>
<a name="60"><span class="lineNum"> 60 </span><span class="lineCov"> 30 : double last_temp = points[n_points - 1].temperature;</span></a>
<a name="61"><span class="lineNum"> 61 </span> : </a>
<a name="62"><span class="lineNum"> 62 </span> : /* iterative refinement to find best k_heat and t_steady */</a>
<a name="63"><span class="lineNum"> 63 </span><span class="lineCov"> 30 : double best_error = 1e10;</span></a>
<a name="64"><span class="lineNum"> 64 </span><span class="lineCov"> 30 : double best_k = 0;</span></a>
<a name="65"><span class="lineNum"> 65 </span><span class="lineCov"> 30 : double best_t_steady = 0;</span></a>
<a name="66"><span class="lineNum"> 66 </span> : </a>
<a name="67"><span class="lineNum"> 67 </span> : /* grid search for parameters */</a>
<a name="68"><span class="lineNum"> 68 </span><span class="lineCov"> 1440 : for (t_steady_try = last_temp + 2.0; t_steady_try &lt;= last_temp + 25.0; t_steady_try += 0.5) {</span></a>
<a name="69"><span class="lineNum"> 69 </span><span class="lineCov"> 38070 : for (k_try = 0.00001; k_try &lt;= 0.001; k_try *= 1.2) {</span></a>
<a name="70"><span class="lineNum"> 70 </span><span class="lineCov"> 36660 : double error = 0.0;</span></a>
<a name="71"><span class="lineNum"> 71 </span> : int i;</a>
<a name="72"><span class="lineNum"> 72 </span> : </a>
<a name="73"><span class="lineNum"> 73 </span> : /* calculate error for this parameter set */</a>
<a name="74"><span class="lineNum"> 74 </span><span class="lineCov"> 219960 : for (i = 0; i &lt; n_points; i++) {</span></a>
<a name="75"><span class="lineNum"> 75 </span><span class="lineCov"> 183300 : double t = points[i].time;</span></a>
<a name="76"><span class="lineNum"> 76 </span><span class="lineCov"> 183300 : double t_predicted = t_steady_try - (t_steady_try - points[0].temperature) * exp(-k_try * t);</span></a>
<a name="77"><span class="lineNum"> 77 </span><span class="lineCov"> 183300 : double diff = points[i].temperature - t_predicted;</span></a>
<a name="78"><span class="lineNum"> 78 </span><span class="lineCov"> 183300 : error += diff * diff;</span></a>
<a name="79"><span class="lineNum"> 79 </span> : }</a>
<a name="80"><span class="lineNum"> 80 </span> : </a>
<a name="81"><span class="lineNum"> 81 </span><span class="lineCov"> 36660 : if (error &lt; best_error) {</span></a>
<a name="82"><span class="lineNum"> 82 </span><span class="lineCov"> 780 : best_error = error;</span></a>
<a name="83"><span class="lineNum"> 83 </span><span class="lineCov"> 780 : best_k = k_try;</span></a>
<a name="84"><span class="lineNum"> 84 </span><span class="lineCov"> 780 : best_t_steady = t_steady_try;</span></a>
<a name="85"><span class="lineNum"> 85 </span> : }</a>
<a name="86"><span class="lineNum"> 86 </span> : }</a>
<a name="87"><span class="lineNum"> 87 </span> : }</a>
<a name="88"><span class="lineNum"> 88 </span> : </a>
<a name="89"><span class="lineNum"> 89 </span><span class="lineCov"> 30 : model.k_heat = best_k;</span></a>
<a name="90"><span class="lineNum"> 90 </span><span class="lineCov"> 30 : model.t_steady = best_t_steady;</span></a>
<a name="91"><span class="lineNum"> 91 </span> : </a>
<a name="92"><span class="lineNum"> 92 </span> : /* calculate quality metrics */</a>
<a name="93"><span class="lineNum"> 93 </span><span class="lineCov"> 30 : double sum_squared_residuals = 0.0;</span></a>
<a name="94"><span class="lineNum"> 94 </span><span class="lineCov"> 30 : double sum_total = 0.0;</span></a>
<a name="95"><span class="lineNum"> 95 </span><span class="lineCov"> 30 : double mean_temp = 0.0;</span></a>
<a name="96"><span class="lineNum"> 96 </span><span class="lineCov"> 30 : model.max_error = 0.0;</span></a>
<a name="97"><span class="lineNum"> 97 </span> : int i;</a>
<a name="98"><span class="lineNum"> 98 </span> : </a>
<a name="99"><span class="lineNum"> 99 </span> : /* calculate mean temperature */</a>
<a name="100"><span class="lineNum"> 100 </span><span class="lineCov"> 180 : for (i = 0; i &lt; n_points; i++)</span></a>
<a name="101"><span class="lineNum"> 101 </span><span class="lineCov"> 150 : mean_temp += points[i].temperature;</span></a>
<a name="102"><span class="lineNum"> 102 </span><span class="lineCov"> 30 : mean_temp /= n_points;</span></a>
<a name="103"><span class="lineNum"> 103 </span> : </a>
<a name="104"><span class="lineNum"> 104 </span> : /* calculate R-squared and errors */</a>
<a name="105"><span class="lineNum"> 105 </span><span class="lineCov"> 180 : for (i = 0; i &lt; n_points; i++) {</span></a>
<a name="106"><span class="lineNum"> 106 </span><span class="lineCov"> 150 : double t = points[i].time;</span></a>
<a name="107"><span class="lineNum"> 107 </span><span class="lineCov"> 150 : double t_predicted = model.t_steady - (model.t_steady - points[0].temperature) * exp(-model.k_heat * t);</span></a>
<a name="108"><span class="lineNum"> 108 </span><span class="lineCov"> 150 : double residual = points[i].temperature - t_predicted;</span></a>
<a name="109"><span class="lineNum"> 109 </span> : </a>
<a name="110"><span class="lineNum"> 110 </span><span class="lineCov"> 150 : sum_squared_residuals += residual * residual;</span></a>
<a name="111"><span class="lineNum"> 111 </span><span class="lineCov"> 150 : sum_total += (points[i].temperature - mean_temp) * (points[i].temperature - mean_temp);</span></a>
<a name="112"><span class="lineNum"> 112 </span> : </a>
<a name="113"><span class="lineNum"> 113 </span><span class="lineCov"> 150 : double abs_error = fabs(residual);</span></a>
<a name="114"><span class="lineNum"> 114 </span><span class="lineCov"> 150 : if (abs_error &gt; model.max_error) {</span></a>
<a name="115"><span class="lineNum"> 115 </span><span class="lineCov"> 90 : model.max_error = abs_error;</span></a>
<a name="116"><span class="lineNum"> 116 </span> : }</a>
<a name="117"><span class="lineNum"> 117 </span> : }</a>
<a name="118"><span class="lineNum"> 118 </span> : </a>
<a name="119"><span class="lineNum"> 119 </span><span class="lineCov"> 30 : model.rmse = sqrt(sum_squared_residuals / n_points);</span></a>
<a name="120"><span class="lineNum"> 120 </span><span class="lineCov"> 30 : model.r_squared = 1.0 - (sum_squared_residuals / sum_total);</span></a>
<a name="121"><span class="lineNum"> 121 </span> : </a>
<a name="122"><span class="lineNum"> 122 </span><span class="lineCov"> 30 : return model;</span></a>
<a name="123"><span class="lineNum"> 123 </span> : }</a>
<a name="124"><span class="lineNum"> 124 </span> : </a>
<a name="125"><span class="lineNum"> 125 </span><span class="lineCov"> 2620 : void state_thermal(struct snapraid_state* state, time_t now)</span></a>
<a name="126"><span class="lineNum"> 126 </span> : {</a>
<a name="127"><span class="lineNum"> 127 </span> : tommy_node* i;</a>
<a name="128"><span class="lineNum"> 128 </span> : unsigned j;</a>
<a name="129"><span class="lineNum"> 129 </span> : tommy_list high;</a>
<a name="130"><span class="lineNum"> 130 </span> : tommy_list low;</a>
<a name="131"><span class="lineNum"> 131 </span> : int ret;</a>
<a name="132"><span class="lineNum"> 132 </span> : </a>
<a name="133"><span class="lineNum"> 133 </span><span class="lineCov"> 2620 : if (state-&gt;thermal_temperature_limit == 0)</span></a>
<a name="134"><span class="lineNum"> 134 </span><span class="lineCov"> 204 : return;</span></a>
<a name="135"><span class="lineNum"> 135 </span> : </a>
<a name="136"><span class="lineNum"> 136 </span><span class="lineCov"> 2416 : tommy_list_init(&amp;high);</span></a>
<a name="137"><span class="lineNum"> 137 </span><span class="lineCov"> 2416 : tommy_list_init(&amp;low);</span></a>
<a name="138"><span class="lineNum"> 138 </span> : </a>
<a name="139"><span class="lineNum"> 139 </span> : /* for all disks */</a>
<a name="140"><span class="lineNum"> 140 </span><span class="lineCov"> 16912 : for (i = state-&gt;disklist; i != 0; i = i-&gt;next) {</span></a>
<a name="141"><span class="lineNum"> 141 </span><span class="lineCov"> 14496 : struct snapraid_disk* disk = i-&gt;data;</span></a>
<a name="142"><span class="lineNum"> 142 </span> : devinfo_t* entry;</a>
<a name="143"><span class="lineNum"> 143 </span> : </a>
<a name="144"><span class="lineNum"> 144 </span><span class="lineCov"> 14496 : entry = calloc_nofail(1, sizeof(devinfo_t));</span></a>
<a name="145"><span class="lineNum"> 145 </span> : </a>
<a name="146"><span class="lineNum"> 146 </span><span class="lineCov"> 14496 : entry-&gt;device = disk-&gt;device;</span></a>
<a name="147"><span class="lineNum"> 147 </span><span class="lineCov"> 14496 : device_name_set(entry, disk-&gt;name, 0);</span></a>
<a name="148"><span class="lineNum"> 148 </span><span class="lineCov"> 14496 : pathcpy(entry-&gt;mount, sizeof(entry-&gt;mount), disk-&gt;dir);</span></a>
<a name="149"><span class="lineNum"> 149 </span><span class="lineCov"> 14496 : pathcpy(entry-&gt;smartctl, sizeof(entry-&gt;smartctl), disk-&gt;smartctl);</span></a>
<a name="150"><span class="lineNum"> 150 </span><span class="lineCov"> 14496 : memcpy(entry-&gt;smartignore, disk-&gt;smartignore, sizeof(entry-&gt;smartignore));</span></a>
<a name="151"><span class="lineNum"> 151 </span> : </a>
<a name="152"><span class="lineNum"> 152 </span><span class="lineCov"> 14496 : tommy_list_insert_tail(&amp;high, &amp;entry-&gt;node, entry);</span></a>
<a name="153"><span class="lineNum"> 153 </span> : }</a>
<a name="154"><span class="lineNum"> 154 </span> : </a>
<a name="155"><span class="lineNum"> 155 </span> : /* for all parities */</a>
<a name="156"><span class="lineNum"> 156 </span><span class="lineCov"> 16912 : for (j = 0; j &lt; state-&gt;level; ++j) {</span></a>
<a name="157"><span class="lineNum"> 157 </span> : devinfo_t* entry;</a>
<a name="158"><span class="lineNum"> 158 </span> : unsigned s;</a>
<a name="159"><span class="lineNum"> 159 </span> : </a>
<a name="160"><span class="lineNum"> 160 </span><span class="lineCov"> 72480 : for (s = 0; s &lt; state-&gt;parity[j].split_mac; ++s) {</span></a>
<a name="161"><span class="lineNum"> 161 </span><span class="lineCov"> 57984 : entry = calloc_nofail(1, sizeof(devinfo_t));</span></a>
<a name="162"><span class="lineNum"> 162 </span> : </a>
<a name="163"><span class="lineNum"> 163 </span><span class="lineCov"> 57984 : entry-&gt;device = state-&gt;parity[j].split_map[s].device;</span></a>
<a name="164"><span class="lineNum"> 164 </span><span class="lineCov"> 57984 : device_name_set(entry, lev_config_name(j), s);</span></a>
<a name="165"><span class="lineNum"> 165 </span><span class="lineCov"> 57984 : pathcpy(entry-&gt;mount, sizeof(entry-&gt;mount), state-&gt;parity[j].split_map[s].path);</span></a>
<a name="166"><span class="lineNum"> 166 </span><span class="lineCov"> 57984 : pathcpy(entry-&gt;smartctl, sizeof(entry-&gt;smartctl), state-&gt;parity[j].smartctl);</span></a>
<a name="167"><span class="lineNum"> 167 </span><span class="lineCov"> 57984 : memcpy(entry-&gt;smartignore, state-&gt;parity[j].smartignore, sizeof(entry-&gt;smartignore));</span></a>
<a name="168"><span class="lineNum"> 168 </span><span class="lineCov"> 57984 : pathcut(entry-&gt;mount); /* remove the parity file */</span></a>
<a name="169"><span class="lineNum"> 169 </span> : </a>
<a name="170"><span class="lineNum"> 170 </span><span class="lineCov"> 57984 : tommy_list_insert_tail(&amp;high, &amp;entry-&gt;node, entry);</span></a>
<a name="171"><span class="lineNum"> 171 </span> : }</a>
<a name="172"><span class="lineNum"> 172 </span> : }</a>
<a name="173"><span class="lineNum"> 173 </span> : </a>
<a name="174"><span class="lineNum"> 174 </span> : /* with a GUI always gives time reference */</a>
<a name="175"><span class="lineNum"> 175 </span><span class="lineCov"> 2416 : if (state-&gt;opt.gui)</span></a>
<a name="176"><span class="lineNum"> 176 </span><span class="lineNoCov"> 0 : log_tag(&quot;unixtime:%&quot; PRIi64 &quot;\n&quot;, (int64_t)now);</span></a>
<a name="177"><span class="lineNum"> 177 </span> : </a>
<a name="178"><span class="lineNum"> 178 </span><span class="lineCov"> 2416 : if (state-&gt;opt.fake_device) {</span></a>
<a name="179"><span class="lineNum"> 179 </span><span class="lineCov"> 2416 : ret = devtest(&amp;high, &amp;low, DEVICE_SMART);</span></a>
<a name="180"><span class="lineNum"> 180 </span> : } else {</a>
<a name="181"><span class="lineNum"> 181 </span><span class="lineNoCov"> 0 : ret = devquery(&amp;high, &amp;low, DEVICE_SMART);</span></a>
<a name="182"><span class="lineNum"> 182 </span> : }</a>
<a name="183"><span class="lineNum"> 183 </span> : </a>
<a name="184"><span class="lineNum"> 184 </span> : /* on error, just disable thermal gathering */</a>
<a name="185"><span class="lineNum"> 185 </span><span class="lineCov"> 2416 : if (ret != 0)</span></a>
<a name="186"><span class="lineNum"> 186 </span><span class="lineNoCov"> 0 : return;</span></a>
<a name="187"><span class="lineNum"> 187 </span> : </a>
<a name="188"><span class="lineNum"> 188 </span> : /* if the list is empty, it's not supported in this platform */</a>
<a name="189"><span class="lineNum"> 189 </span><span class="lineCov"> 2416 : if (tommy_list_empty(&amp;low))</span></a>
<a name="190"><span class="lineNum"> 190 </span><span class="lineNoCov"> 0 : return;</span></a>
<a name="191"><span class="lineNum"> 191 </span> : </a>
<a name="192"><span class="lineNum"> 192 </span> : /* report new attribute */</a>
<a name="193"><span class="lineNum"> 193 </span><span class="lineCov"> 2416 : state_attr(state, &amp;low);</span></a>
<a name="194"><span class="lineNum"> 194 </span> : </a>
<a name="195"><span class="lineNum"> 195 </span> : /* if ambient temperature is not set, set it now with the lowest HD temperature */</a>
<a name="196"><span class="lineNum"> 196 </span><span class="lineCov"> 2416 : if (state-&gt;thermal_ambient_temperature == 0) {</span></a>
<a name="197"><span class="lineNum"> 197 </span><span class="lineCov"> 1 : state-&gt;thermal_ambient_temperature = ambient_temperature();</span></a>
<a name="198"><span class="lineNum"> 198 </span> : </a>
<a name="199"><span class="lineNum"> 199 </span><span class="lineCov"> 31 : for (i = tommy_list_head(&amp;low); i != 0; i = i-&gt;next) {</span></a>
<a name="200"><span class="lineNum"> 200 </span><span class="lineCov"> 30 : devinfo_t* devinfo = i-&gt;data;</span></a>
<a name="201"><span class="lineNum"> 201 </span> : </a>
<a name="202"><span class="lineNum"> 202 </span><span class="lineCov"> 30 : int temp = smart_temp(devinfo);</span></a>
<a name="203"><span class="lineNum"> 203 </span><span class="lineCov"> 30 : if (temp &lt; 0)</span></a>
<a name="204"><span class="lineNum"> 204 </span><span class="lineNoCov"> 0 : continue;</span></a>
<a name="205"><span class="lineNum"> 205 </span> : </a>
<a name="206"><span class="lineNum"> 206 </span><span class="lineCov"> 30 : log_tag(&quot;thermal:system:candidate:%d\n&quot;, temp);</span></a>
<a name="207"><span class="lineNum"> 207 </span> : </a>
<a name="208"><span class="lineNum"> 208 </span><span class="lineCov"> 30 : if (state-&gt;thermal_ambient_temperature == 0 || state-&gt;thermal_ambient_temperature &gt; temp)</span></a>
<a name="209"><span class="lineNum"> 209 </span><span class="lineCov"> 1 : state-&gt;thermal_ambient_temperature = temp;</span></a>
<a name="210"><span class="lineNum"> 210 </span> : }</a>
<a name="211"><span class="lineNum"> 211 </span> : </a>
<a name="212"><span class="lineNum"> 212 </span><span class="lineCov"> 1 : log_tag(&quot;thermal:system:final:%d\n&quot;, state-&gt;thermal_ambient_temperature);</span></a>
<a name="213"><span class="lineNum"> 213 </span> : }</a>
<a name="214"><span class="lineNum"> 214 </span> : </a>
<a name="215"><span class="lineNum"> 215 </span><span class="lineCov"> 2416 : int highest_temperature = 0;</span></a>
<a name="216"><span class="lineNum"> 216 </span><span class="lineCov"> 74896 : for (i = tommy_list_head(&amp;low); i != 0; i = i-&gt;next) {</span></a>
<a name="217"><span class="lineNum"> 217 </span> : tommy_node* t;</a>
<a name="218"><span class="lineNum"> 218 </span> : struct snapraid_thermal* found;</a>
<a name="219"><span class="lineNum"> 219 </span><span class="lineCov"> 72480 : devinfo_t* devinfo = i-&gt;data;</span></a>
<a name="220"><span class="lineNum"> 220 </span> : unsigned k;</a>
<a name="221"><span class="lineNum"> 221 </span> : </a>
<a name="222"><span class="lineNum"> 222 </span><span class="lineCov"> 72480 : int temperature = smart_temp(devinfo);</span></a>
<a name="223"><span class="lineNum"> 223 </span><span class="lineCov"> 72480 : if (temperature &lt; 0)</span></a>
<a name="224"><span class="lineNum"> 224 </span><span class="lineNoCov"> 0 : continue;</span></a>
<a name="225"><span class="lineNum"> 225 </span> : </a>
<a name="226"><span class="lineNum"> 226 </span> : /* search of the entry */</a>
<a name="227"><span class="lineNum"> 227 </span><span class="lineCov"> 72480 : found = 0;</span></a>
<a name="228"><span class="lineNum"> 228 </span><span class="lineCov"> 1123440 : for (t = tommy_list_head(&amp;state-&gt;thermallist); t != 0; t = t-&gt;next) {</span></a>
<a name="229"><span class="lineNum"> 229 </span><span class="lineCov"> 1123410 : struct snapraid_thermal* thermal = t-&gt;data;</span></a>
<a name="230"><span class="lineNum"> 230 </span><span class="lineCov"> 1123410 : if (thermal-&gt;device == devinfo-&gt;device) {</span></a>
<a name="231"><span class="lineNum"> 231 </span><span class="lineCov"> 72450 : found = thermal;</span></a>
<a name="232"><span class="lineNum"> 232 </span><span class="lineCov"> 72450 : break;</span></a>
<a name="233"><span class="lineNum"> 233 </span> : }</a>
<a name="234"><span class="lineNum"> 234 </span> : }</a>
<a name="235"><span class="lineNum"> 235 </span> : </a>
<a name="236"><span class="lineNum"> 236 </span> : /* if not found, create it */</a>
<a name="237"><span class="lineNum"> 237 </span><span class="lineCov"> 72480 : if (found == 0) {</span></a>
<a name="238"><span class="lineNum"> 238 </span><span class="lineCov"> 30 : found = thermal_alloc(devinfo-&gt;device, devinfo-&gt;name);</span></a>
<a name="239"><span class="lineNum"> 239 </span><span class="lineCov"> 30 : tommy_list_insert_tail(&amp;state-&gt;thermallist, &amp;found-&gt;node, found);</span></a>
<a name="240"><span class="lineNum"> 240 </span> : }</a>
<a name="241"><span class="lineNum"> 241 </span> : </a>
<a name="242"><span class="lineNum"> 242 </span><span class="lineCov"> 72480 : found-&gt;latest_temperature = temperature;</span></a>
<a name="243"><span class="lineNum"> 243 </span> : </a>
<a name="244"><span class="lineNum"> 244 </span><span class="lineCov"> 72480 : if (highest_temperature &lt; temperature)</span></a>
<a name="245"><span class="lineNum"> 245 </span><span class="lineCov"> 2416 : highest_temperature = temperature;</span></a>
<a name="246"><span class="lineNum"> 246 </span> : </a>
<a name="247"><span class="lineNum"> 247 </span><span class="lineCov"> 72480 : log_tag(&quot;thermal:current:%s:%&quot; PRIu64 &quot;:%d\n&quot;, devinfo-&gt;name, devinfo-&gt;device, temperature);</span></a>
<a name="248"><span class="lineNum"> 248 </span> : </a>
<a name="249"><span class="lineNum"> 249 </span><span class="lineCov"> 72480 : if (state-&gt;thermal_stop_gathering)</span></a>
<a name="250"><span class="lineNum"> 250 </span><span class="lineNoCov"> 0 : continue;</span></a>
<a name="251"><span class="lineNum"> 251 </span> : </a>
<a name="252"><span class="lineNum"> 252 </span><span class="lineCov"> 72480 : if (found-&gt;count + 1 &gt;= THERMAL_MAX) /* keep one extra space at the end */</span></a>
<a name="253"><span class="lineNum"> 253 </span><span class="lineNoCov"> 0 : continue;</span></a>
<a name="254"><span class="lineNum"> 254 </span> : </a>
<a name="255"><span class="lineNum"> 255 </span> : /* only monotone increasing temperature */</a>
<a name="256"><span class="lineNum"> 256 </span><span class="lineCov"> 72480 : if (found-&gt;count &gt; 0 &amp;&amp; found-&gt;data[found-&gt;count - 1].temperature &gt;= temperature)</span></a>
<a name="257"><span class="lineNum"> 257 </span><span class="lineCov"> 72450 : continue;</span></a>
<a name="258"><span class="lineNum"> 258 </span> : </a>
<a name="259"><span class="lineNum"> 259 </span> : /* insert the new data point */</a>
<a name="260"><span class="lineNum"> 260 </span><span class="lineCov"> 30 : found-&gt;data[found-&gt;count].temperature = temperature;</span></a>
<a name="261"><span class="lineNum"> 261 </span><span class="lineCov"> 30 : found-&gt;data[found-&gt;count].time = now - state-&gt;thermal_first;</span></a>
<a name="262"><span class="lineNum"> 262 </span><span class="lineCov"> 30 : ++found-&gt;count;</span></a>
<a name="263"><span class="lineNum"> 263 </span> : </a>
<a name="264"><span class="lineNum"> 264 </span><span class="lineCov"> 30 : if (state-&gt;opt.fake_device) {</span></a>
<a name="265"><span class="lineNum"> 265 </span> : /* fill with fake data */</a>
<a name="266"><span class="lineNum"> 266 </span><span class="lineCov"> 30 : found-&gt;data[0].time = 0;</span></a>
<a name="267"><span class="lineNum"> 267 </span><span class="lineCov"> 30 : found-&gt;data[0].temperature = 27;</span></a>
<a name="268"><span class="lineNum"> 268 </span><span class="lineCov"> 30 : found-&gt;data[1].time = 100;</span></a>
<a name="269"><span class="lineNum"> 269 </span><span class="lineCov"> 30 : found-&gt;data[1].temperature = 28;</span></a>
<a name="270"><span class="lineNum"> 270 </span><span class="lineCov"> 30 : found-&gt;data[2].time = 300;</span></a>
<a name="271"><span class="lineNum"> 271 </span><span class="lineCov"> 30 : found-&gt;data[2].temperature = 29;</span></a>
<a name="272"><span class="lineNum"> 272 </span><span class="lineCov"> 30 : found-&gt;data[3].time = 700;</span></a>
<a name="273"><span class="lineNum"> 273 </span><span class="lineCov"> 30 : found-&gt;data[3].temperature = 30;</span></a>
<a name="274"><span class="lineNum"> 274 </span><span class="lineCov"> 30 : found-&gt;data[4].time = 1500;</span></a>
<a name="275"><span class="lineNum"> 275 </span><span class="lineCov"> 30 : found-&gt;data[4].temperature = 31;</span></a>
<a name="276"><span class="lineNum"> 276 </span><span class="lineCov"> 30 : found-&gt;count = 5;</span></a>
<a name="277"><span class="lineNum"> 277 </span> : }</a>
<a name="278"><span class="lineNum"> 278 </span> : </a>
<a name="279"><span class="lineNum"> 279 </span> : /* log the new data */</a>
<a name="280"><span class="lineNum"> 280 </span><span class="lineCov"> 30 : log_tag(&quot;thermal:heat:%s:%&quot; PRIu64 &quot;:%u:&quot;, devinfo-&gt;name, devinfo-&gt;device, found-&gt;count);</span></a>
<a name="281"><span class="lineNum"> 281 </span><span class="lineCov"> 180 : for (k = 0; k &lt; found-&gt;count; ++k)</span></a>
<a name="282"><span class="lineNum"> 282 </span><span class="lineCov"> 150 : log_tag(&quot;%s%d/%d&quot;, k &gt; 0 ? &quot;,&quot; : &quot;&quot;, (int)found-&gt;data[k].temperature, (int)found-&gt;data[k].time);</span></a>
<a name="283"><span class="lineNum"> 283 </span><span class="lineCov"> 30 : log_tag(&quot;\n&quot;);</span></a>
<a name="284"><span class="lineNum"> 284 </span> : </a>
<a name="285"><span class="lineNum"> 285 </span> : /* estimate parameters */</a>
<a name="286"><span class="lineNum"> 286 </span><span class="lineCov"> 30 : found-&gt;params = fit_thermal_model(found-&gt;data, found-&gt;count, state-&gt;thermal_ambient_temperature);</span></a>
<a name="287"><span class="lineNum"> 287 </span> : </a>
<a name="288"><span class="lineNum"> 288 </span><span class="lineCov"> 30 : log_tag(&quot;thermal:params:%s:%&quot; PRIu64 &quot;:%g:%g:%g:%g:%g:%g\n&quot;, devinfo-&gt;name, devinfo-&gt;device,</span></a>
<a name="289"><span class="lineNum"> 289 </span> : found-&gt;params.k_heat, found-&gt;params.t_ambient, found-&gt;params.t_steady,</a>
<a name="290"><span class="lineNum"> 290 </span> : found-&gt;params.rmse, found-&gt;params.r_squared, found-&gt;params.max_error);</a>
<a name="291"><span class="lineNum"> 291 </span> : }</a>
<a name="292"><span class="lineNum"> 292 </span> : </a>
<a name="293"><span class="lineNum"> 293 </span> : /* always update the highest temperature */</a>
<a name="294"><span class="lineNum"> 294 </span><span class="lineCov"> 2416 : state-&gt;thermal_highest_temperature = highest_temperature;</span></a>
<a name="295"><span class="lineNum"> 295 </span> : </a>
<a name="296"><span class="lineNum"> 296 </span><span class="lineCov"> 2416 : log_tag(&quot;thermal:highest:%d\n&quot;, highest_temperature);</span></a>
<a name="297"><span class="lineNum"> 297 </span><span class="lineCov"> 2416 : log_flush();</span></a>
<a name="298"><span class="lineNum"> 298 </span> : </a>
<a name="299"><span class="lineNum"> 299 </span><span class="lineCov"> 2416 : tommy_list_foreach(&amp;high, free);</span></a>
<a name="300"><span class="lineNum"> 300 </span><span class="lineCov"> 2416 : tommy_list_foreach(&amp;low, free);</span></a>
<a name="301"><span class="lineNum"> 301 </span> : }</a>
<a name="302"><span class="lineNum"> 302 </span> : </a>
<a name="303"><span class="lineNum"> 303 </span><span class="lineCov"> 1103806 : int state_thermal_alarm(struct snapraid_state* state)</span></a>
<a name="304"><span class="lineNum"> 304 </span> : {</a>
<a name="305"><span class="lineNum"> 305 </span> : /* if no limit, there is no thermal support */</a>
<a name="306"><span class="lineNum"> 306 </span><span class="lineCov"> 1103806 : if (state-&gt;thermal_temperature_limit == 0)</span></a>
<a name="307"><span class="lineNum"> 307 </span><span class="lineCov"> 1101390 : return 0;</span></a>
<a name="308"><span class="lineNum"> 308 </span> : </a>
<a name="309"><span class="lineNum"> 309 </span><span class="lineCov"> 2416 : if (state-&gt;thermal_highest_temperature &lt;= state-&gt;thermal_temperature_limit)</span></a>
<a name="310"><span class="lineNum"> 310 </span><span class="lineCov"> 2416 : return 0;</span></a>
<a name="311"><span class="lineNum"> 311 </span> : </a>
<a name="312"><span class="lineNum"> 312 </span><span class="lineNoCov"> 0 : return 1;</span></a>
<a name="313"><span class="lineNum"> 313 </span> : }</a>
<a name="314"><span class="lineNum"> 314 </span> : </a>
<a name="315"><span class="lineNum"> 315 </span><span class="lineNoCov"> 0 : void state_thermal_cooldown(struct snapraid_state* state)</span></a>
<a name="316"><span class="lineNum"> 316 </span> : {</a>
<a name="317"><span class="lineNum"> 317 </span><span class="lineNoCov"> 0 : int sleep_time = state-&gt;thermal_cooldown_time;</span></a>
<a name="318"><span class="lineNum"> 318 </span> : </a>
<a name="319"><span class="lineNum"> 319 </span><span class="lineNoCov"> 0 : if (sleep_time == 0)</span></a>
<a name="320"><span class="lineNum"> 320 </span><span class="lineNoCov"> 0 : sleep_time = 5 * 60; /* default sleep time */</span></a>
<a name="321"><span class="lineNum"> 321 </span><span class="lineNoCov"> 0 : if (sleep_time &lt; 3 * 60)</span></a>
<a name="322"><span class="lineNum"> 322 </span><span class="lineNoCov"> 0 : sleep_time = 3 * 60; /* minimum sleep time */</span></a>
<a name="323"><span class="lineNum"> 323 </span> : </a>
<a name="324"><span class="lineNum"> 324 </span> : /* from now on, stop any further data gathering as the heating is interrupted */</a>
<a name="325"><span class="lineNum"> 325 </span><span class="lineNoCov"> 0 : state-&gt;thermal_stop_gathering = 1;</span></a>
<a name="326"><span class="lineNum"> 326 </span> : </a>
<a name="327"><span class="lineNum"> 327 </span><span class="lineNoCov"> 0 : log_tag(&quot;thermal:spindown\n&quot;);</span></a>
<a name="328"><span class="lineNum"> 328 </span><span class="lineNoCov"> 0 : state_device(state, DEVICE_DOWN, 0);</span></a>
<a name="329"><span class="lineNum"> 329 </span> : </a>
<a name="330"><span class="lineNum"> 330 </span><span class="lineNoCov"> 0 : msg_progress(&quot;Cooldown...\n&quot;);</span></a>
<a name="331"><span class="lineNum"> 331 </span> : </a>
<a name="332"><span class="lineNum"> 332 </span><span class="lineNoCov"> 0 : log_tag(&quot;thermal:cooldown:%d\n&quot;, sleep_time);</span></a>
<a name="333"><span class="lineNum"> 333 </span><span class="lineNoCov"> 0 : printf(&quot;Waiting for %d minutes...\n&quot;, sleep_time / 60);</span></a>
<a name="334"><span class="lineNum"> 334 </span> : </a>
<a name="335"><span class="lineNum"> 335 </span><span class="lineNoCov"> 0 : log_flush();</span></a>
<a name="336"><span class="lineNum"> 336 </span> : </a>
<a name="337"><span class="lineNum"> 337 </span> : /* every 30 seconds spin down any disk that was spunup */</a>
<a name="338"><span class="lineNum"> 338 </span><span class="lineNoCov"> 0 : while (sleep_time &gt; 0) {</span></a>
<a name="339"><span class="lineNum"> 339 </span><span class="lineNoCov"> 0 : state_device(state, DEVICE_DOWNIFUP, 0);</span></a>
<a name="340"><span class="lineNum"> 340 </span> : </a>
<a name="341"><span class="lineNum"> 341 </span><span class="lineNoCov"> 0 : sleep(30);</span></a>
<a name="342"><span class="lineNum"> 342 </span><span class="lineNoCov"> 0 : sleep_time -= 30;</span></a>
<a name="343"><span class="lineNum"> 343 </span> : }</a>
<a name="344"><span class="lineNum"> 344 </span> : </a>
<a name="345"><span class="lineNum"> 345 </span><span class="lineNoCov"> 0 : if (!global_interrupt) { /* don't wake-up if we are interrupting */</span></a>
<a name="346"><span class="lineNum"> 346 </span><span class="lineNoCov"> 0 : log_tag(&quot;thermal:spinup\n&quot;);</span></a>
<a name="347"><span class="lineNum"> 347 </span> : </a>
<a name="348"><span class="lineNum"> 348 </span> : /* spinup */</a>
<a name="349"><span class="lineNum"> 349 </span><span class="lineNoCov"> 0 : state_device(state, DEVICE_UP, 0);</span></a>
<a name="350"><span class="lineNum"> 350 </span> : </a>
<a name="351"><span class="lineNum"> 351 </span> : /* log new thermal info */</a>
<a name="352"><span class="lineNum"> 352 </span><span class="lineNoCov"> 0 : state_thermal(state, 0);</span></a>
<a name="353"><span class="lineNum"> 353 </span> : }</a>
<a name="354"><span class="lineNum"> 354 </span><span class="lineNoCov"> 0 : }</span></a>
<a name="355"><span class="lineNum"> 355 </span> : </a>
<a name="356"><span class="lineNum"> 356 </span><span class="lineCov"> 235 : int state_thermal_begin(struct snapraid_state* state, time_t now)</span></a>
<a name="357"><span class="lineNum"> 357 </span> : {</a>
<a name="358"><span class="lineNum"> 358 </span><span class="lineCov"> 235 : if (state-&gt;thermal_temperature_limit == 0)</span></a>
<a name="359"><span class="lineNum"> 359 </span><span class="lineCov"> 234 : return 1;</span></a>
<a name="360"><span class="lineNum"> 360 </span> : </a>
<a name="361"><span class="lineNum"> 361 </span> : /* initial thermal measure */</a>
<a name="362"><span class="lineNum"> 362 </span><span class="lineCov"> 1 : state-&gt;thermal_first = now;</span></a>
<a name="363"><span class="lineNum"> 363 </span><span class="lineCov"> 1 : state-&gt;thermal_latest = now;</span></a>
<a name="364"><span class="lineNum"> 364 </span><span class="lineCov"> 1 : state_thermal(state, now);</span></a>
<a name="365"><span class="lineNum"> 365 </span> : </a>
<a name="366"><span class="lineNum"> 366 </span><span class="lineCov"> 1 : if (state-&gt;thermal_ambient_temperature != 0) {</span></a>
<a name="367"><span class="lineNum"> 367 </span><span class="lineCov"> 1 : printf(&quot;System temperature is %u degrees\n&quot;, state-&gt;thermal_ambient_temperature);</span></a>
<a name="368"><span class="lineNum"> 368 </span> : </a>
<a name="369"><span class="lineNum"> 369 </span><span class="lineCov"> 1 : if (state-&gt;thermal_temperature_limit != 0 &amp;&amp; state-&gt;thermal_temperature_limit &lt;= state-&gt;thermal_ambient_temperature) {</span></a>
<a name="370"><span class="lineNum"> 370 </span> : /* LCOV_EXCL_START */</a>
<a name="371"><span class="lineNum"> 371 </span> : log_fatal(EENVIRONMENT, &quot;DANGER! System temperature of %d degrees is higher than the temperature limit of %d degrees. Unable to proceed!\n&quot;, state-&gt;thermal_ambient_temperature, state-&gt;thermal_temperature_limit);</a>
<a name="372"><span class="lineNum"> 372 </span> : log_flush();</a>
<a name="373"><span class="lineNum"> 373 </span> : return 0;</a>
<a name="374"><span class="lineNum"> 374 </span> : /* LCOV_EXCL_STOP */</a>
<a name="375"><span class="lineNum"> 375 </span> : }</a>
<a name="376"><span class="lineNum"> 376 </span> : }</a>
<a name="377"><span class="lineNum"> 377 </span> : </a>
<a name="378"><span class="lineNum"> 378 </span><span class="lineCov"> 1 : if (state_thermal_alarm(state)) {</span></a>
<a name="379"><span class="lineNum"> 379 </span> : /* LCOV_EXCL_START */</a>
<a name="380"><span class="lineNum"> 380 </span> : log_fatal(EENVIRONMENT, &quot;DANGER! Hard disk temperature of %d degrees is already outside the operating range. Unable to proceed!\n&quot;, state-&gt;thermal_highest_temperature);</a>
<a name="381"><span class="lineNum"> 381 </span> : log_flush();</a>
<a name="382"><span class="lineNum"> 382 </span> : return 0;</a>
<a name="383"><span class="lineNum"> 383 </span> : /* LCOV_EXCL_STOP */</a>
<a name="384"><span class="lineNum"> 384 </span> : }</a>
<a name="385"><span class="lineNum"> 385 </span> : </a>
<a name="386"><span class="lineNum"> 386 </span><span class="lineCov"> 1 : return 1;</span></a>
<a name="387"><span class="lineNum"> 387 </span> : }</a>
<a name="388"><span class="lineNum"> 388 </span> : </a>
</pre>
</td>
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