https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-3243 Lustre <p>I've just seen this test failure:</p> <p>'algo set to crc32 instead of adler' </p> <p><a href="https://maloo.whamcloud.com/test_sets/eae87668-aee2-11e2-a8d0-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/eae87668-aee2-11e2-a8d0-52540035b04c</a></p> <p>against my patch:</p> <p><a href="http://review.whamcloud.com/#change,3440" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/#change,3440</a></p> LU-3243

sanity.sh test_77i: algo set to crc32 instead of adler

Bug Minor Resolved Fixed WC Triage Richard Henwood Mon, 29 Apr 2013 18:04:46 +0000 Wed, 16 Jul 2014 14:33:03 +0000 Fri, 13 Sep 2013 00:02:02 +0000 Lustre 2.4.1 Lustre 2.5.0 0 3 <p>Richard,<br/> what CPU is being used in this testing? The output from /proc/cpuinfo would be useful.</p> <p>If there are CPUs that support the PCLMULQDQ instruction on both client and OSS, and the checksums are at least 2x faster using crc32 than adler, it makes sense to choose the crc32 checksum by default.</p> <p>IMHO, the test seems a bit broken in that it is expecting adler, when in fact crc32 has always been a supported algorithm. I guess the test was written this way because adler was hard-coded as the default (since it was always faster than crc32 in software) and has been around sufficiently long to be supported in all releases. However, the client is still at liberty to choose crc32 if it is faster...</p> <p>I also noticed in test_77c that there is an error being printed:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>error: set_param: writing to file /proc/fs/lustre/osc/lustre-OST0000-osc-ffff88007b2f9800/checksum_type: Invalid argument </pre> </div></div> <p>but is lacking information for the user about why it is failing (the test itself is trying to set the checksum type to crc32 at this point). I submitted <a href="http://review.whamcloud.com/6205" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/6205</a> to improve the error message, but that is not fixing the bug here.</p> <p>Landed for 2.4.1 and 2.5.0</p> Related LU-5361 Development Rank 1|hzvpaf: Rank (Obsolete) 7966 Severity