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-12983 Lustre <p>Trying to print out params log we get error</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> # lctl --device MGS llog_print param OBD_IOC_LLOG_PRINT failed: No such file or directory </pre> </div></div> <p>I dumped the params file via debugfs. It looks fine. It does have 216 records.</p> <p>Here is strace out</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0x7f, 0x08), 0x7fffffffc9d0) = 0 ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xc0, 0x08), 0x7fffffffc9d0) = -1 ENOENT (No such file or directory) write(2, <span class="code-quote">"OBD_IOC_LLOG_PRINT failed: No su"</span>..., 53OBD_IOC_LLOG_PRINT failed: No such file or directory ) = 53 rt_sigaction(SIGINT, {0x40a140, ~[RTMIN RT_1], SA_RESTORER|SA_RESTART, 0x2aaaaaf0b5f0}, NULL, 8) = 0 exit_group(1) = ? </pre> </div></div> LU-12983

OBD_IOC_LLOG_PRINT failed: No such file or directory

Bug Major Resolved Incomplete Peter Jones Mahmoud Hanafi Tue, 19 Nov 2019 21:51:06 +0000 Fri, 19 Nov 2021 19:52:28 +0000 Wed, 6 Jan 2021 13:14:40 +0000 0 5 <p>hm, I suspect this might be because MGS is not up or something like that?</p> <p>can you please enable -1 debug log (lctl set_param_debug=-1) repeat the llog_print lctl command and thel do "lctl dk &gt;/tmp/log"</p> <p>if this is a working system that you are using you might want to capture "lctl get_param debug" output first and then restore it by repeating lctl set_param debug= with that output afterwards.</p> <p>also please do "lctl dl" and attach the output as well.</p> <p>Got the debug output requested.<br/> <span class="nobr"><a href="https://jira.whamcloud.com/secure/attachment/33893/33893_debug.tgz" title="debug.tgz attached to LU-12983">debug.tgz^{<img class="rendericon" src="https://jira.whamcloud.com/images/icons/link_attachment_7.gif" height="7" width="7" align="absmiddle" alt="" border="0"/>}</a></span> </p> <p>Did you try "<tt>lctl --device MGS llog_print <b>params</b></tt>" (note the '<b>s</b>' at the end)?  That is the name of the parameter file, not "param".</p> <p>Note, if this is documented incorrectly somewhere, please let us know so that the documentation can be fixed. </p> <p>PS: what Lustre version is in use here? The "<tt>Affects Version:</tt>" field is blank. I'm seeing similar issues with an older 2.10, but I believe this is fixed in 2.12. </p> <p>PPS: as a temporary workaround, you can use the following commands to dump this log:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>debugfs -c -R "dump CONFIGS/params /tmp/debug" /dev/&lt;mgt_device&gt; llog_reader /tmp/debug </pre> </div></div> <p>Where the <tt>&lt;mgt_device&gt;</tt> is the block device where the MGT info is stored (may be MDT device, or standalone MGT device).</p> <p>This filesystem was just upgraded to l2.12.2 and we started to see this issue. FYI the filesystem was created with l2.4. The command was working in l2.10.8.  </p> <p>The missing "s" was a cut and past issue.</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> # lctl --device MGS llog_print params OBD_IOC_LLOG_PRINT failed: Inappropriate ioctl <span class="code-keyword">for</span> device </pre> </div></div> <p> </p> <p>We can close this for now</p> Related Development Rank 1|i00pnr: Rank (Obsolete) 9223372036854775807 Severity