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<h3>
Shane Snyder pushed to branch master
at <a href="https://xgitlab.cels.anl.gov/darshan/darshan">darshan / darshan</a>
</h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://xgitlab.cels.anl.gov/darshan/darshan/-/commit/8b3771d46503ebf3a43b9cfe853cd596e9486edb">8b3771d4</a></strong>
<div>
<span>by Shane Snyder</span>
<i>at 2021-04-29T18:02:50+00:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">check lustre striping for all files
This attempts to work around issue #302, where Darshan can't
instrument Lustre striping information for symlinks to Lustre
files that reside on other file systems. The method for querying
Lustre striping info is general enough (based on xattrs) and
low-overhead enough that this should not create any issues for
Darshan users.
Closes #302
</pre>
</li>
<li>
<strong><a href="https://xgitlab.cels.anl.gov/darshan/darshan/-/commit/5ec3e5a9f5ce4be7faddc266ee18c8db0d2cf5bc">5ec3e5a9</a></strong>
<div>
<span>by Shane Snyder</span>
<i>at 2021-04-29T13:41:59-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Merge branch 'snyder/dev-issue302-lustre-symlinks' into 'master'
check lustre striping for all files
Closes #302
See merge request darshan/darshan!108</pre>
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<h4>1 changed file:</h4>
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<li class="file-stats">
<a href="#4022c5f1c049da302e63f7acf3598afadfdfeb89">
darshan-runtime/lib/darshan-core.c
</a>
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<h4>Changes:</h4>
<li id="4022c5f1c049da302e63f7acf3598afadfdfeb89">
<a href="https://xgitlab.cels.anl.gov/darshan/darshan/-/compare/95678e943cfdafab39b8ba549dfa5775bf938e5c...5ec3e5a9f5ce4be7faddc266ee18c8db0d2cf5bc#4022c5f1c049da302e63f7acf3598afadfdfeb89"><strong>darshan-runtime/lib/darshan-core.c</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2342,8 +2342,16 @@ char *darshan_core_lookup_record_name(darshan_record_id rec_id)</td>
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<pre style="margin: 0;"> <span id="LC2342" class="line" lang="c"><span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="nf" style="color: #900; font-weight: 600;">darshan_instrument_fs_data</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">fs_type</span><span class="p">,</span> <span class="k" style="font-weight: 600;">const</span> <span class="kt" style="color: #458; font-weight: 600;">char</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">path</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">fd</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC2343" class="line" lang="c"><span class="p">{</span></span>
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<pre style="margin: 0;"> <span id="LC2344" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#ifdef DARSHAN_LUSTRE</span></span>
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2345
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<pre style="margin: 0;">-<span id="LC2345" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* allow lustre to generate a record if we configured with lustre support */</span></span>
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<pre style="margin: 0;">-<span id="LC2346" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span><span class="p">(</span><span class="n" style="color: #333;">fs_type</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">LL_SUPER_MAGIC</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC2345" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* allow Lustre to generate a record if we configured with Lustre support */</span></span>
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<pre style="margin: 0;">+<span id="LC2346" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* XXX: Note that we short-circuit this Lustre file system check and try to</span></span>
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<pre style="margin: 0;">+<span id="LC2347" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * query Lustre striping stats for *all* files instrumented by Darshan (i.e.,</span></span>
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<td class="diff-line-num new new_line" data-linenumber="2348" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC2348" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Lustre files or not). We do this so that symlinks to Lustre files are</span></span>
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<td class="diff-line-num new new_line" data-linenumber="2349" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC2349" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * properly instrumented, since these symlinks might live on other non-Lustre</span></span>
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<pre style="margin: 0;">+<span id="LC2350" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * file systems. We have instrumented this Lustre file system check on a number</span></span>
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<pre style="margin: 0;">+<span id="LC2351" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * of file systems and believe it is low overhead enough to not be noticable by</span></span>
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<pre style="margin: 0;">+<span id="LC2352" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * users.</span></span>
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<pre style="margin: 0;">+<span id="LC2353" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;">+<span id="LC2354" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span><span class="p">(</span><span class="mi" style="color: #099;">1</span> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">fs_type</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">LL_SUPER_MAGIC</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC2355" class="line" lang="c"> <span class="p">{</span></span>
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<pre style="margin: 0;"> <span id="LC2356" class="line" lang="c"> <span class="n" style="color: #333;">darshan_instrument_lustre_file</span><span class="p">(</span><span class="n" style="color: #333;">path</span><span class="p">,</span> <span class="n" style="color: #333;">fd</span><span class="p">);</span></span>
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2349
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<pre style="margin: 0;"> <span id="LC2357" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span><span class="p">;</span></span>
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