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<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">I saw the same issue and downgraded my kernel back to RHEL kernel 3.10.0-957.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">But you probably wants to keep 7.7 kernel ? :)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><b><span style="font-size:12.0pt;color:black">De :
</span></b><span style="font-size:12.0pt;color:black">lustre-discuss <lustre-discuss-bounces@lists.lustre.org> au nom de Tamas Kazinczy <tamas.kazinczy@kifu.gov.hu><br>
<b>Organisation : </b>Governmental Agency for IT Development<br>
<b>Date : </b>mardi 10 septembre 2019 à 14:39<br>
<b>À : </b>"lustre-discuss@lists.lustre.org" <lustre-discuss@lists.lustre.org><br>
<b>Objet : </b>[lustre-discuss] CPU soft lockup on mkfs.lustre<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
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<p style="margin-left:35.4pt">Hi,<o:p></o:p></p>
<p style="margin-left:35.4pt">I've successfully compiled Lustre after the <o:p></o:p></p>
<p style="margin-left:35.4pt">'LU-12457 kernel: RHEL 7.7 server support' change <o:p>
</o:p></p>
<p style="margin-left:35.4pt">but when I try to create an MGS with LDISKFS backend
<o:p></o:p></p>
<p style="margin-left:35.4pt">on RHEL 7.7 I get CPU soft lockup:<o:p></o:p></p>
<p style="margin-left:35.4pt"> kernel:NMI watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [mkfs.lustre:31220]<o:p></o:p></p>
<p style="margin-left:35.4pt"><o:p> </o:p></p>
<p style="margin-left:35.4pt">Looked into logs for more details:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt">Sep 6 10:41:00 mgs1 kernel: Call Trace:<o:p></o:p></p>
<p style="margin-left:35.4pt">Sep 6 10:41:00 mgs1 kernel: [<ffffffff9bd73365>] queued_spin_lock_slowpath+0xb/0xf<br>
Sep 6 10:41:00 mgs1 kernel: [<ffffffff9bd81ad0>] _raw_spin_lock+0x20/0x30<br>
Sep 6 10:41:00 mgs1 kernel: [<ffffffff9b865e2e>] igrab+0x1e/0x60<br>
Sep 6 10:41:00 mgs1 kernel: [<ffffffffc06bd88b>] ldiskfs_quota_off+0x3b/0x130 [ldiskfs]<br>
Sep 6 10:41:00 mgs1 kernel: [<ffffffffc06c091d>] ldiskfs_put_super+0x4d/0x400 [ldiskfs]<br>
Sep 6 10:41:00 mgs1 kernel: [<ffffffff9b84b13d>] generic_shutdown_super+0x6d/0x100<br>
Sep 6 10:41:00 mgs1 kernel: [<ffffffff9b84b5b7>] kill_block_super+0x27/0x70<br>
Sep 6 10:41:00 mgs1 kernel: [<ffffffff9b84b91e>] deactivate_locked_super+0x4e/0x70<br>
Sep 6 10:41:00 mgs1 kernel: [<ffffffff9b84c0a6>] deactivate_super+0x46/0x60<br>
Sep 6 10:41:00 mgs1 kernel: [<ffffffff9b86abff>] cleanup_mnt+0x3f/0x80<br>
Sep 6 10:41:00 mgs1 kernel: [<ffffffff9b86ac92>] __cleanup_mnt+0x12/0x20<br>
Sep 6 10:41:00 mgs1 kernel: [<ffffffff9b6c1c0b>] task_work_run+0xbb/0xe0<br>
Sep 6 10:41:00 mgs1 kernel: [<ffffffff9b62cc65>] do_notify_resume+0xa5/0xc0<br>
Sep 6 10:41:00 mgs1 kernel: [<ffffffff9bd8c23b>] int_signal+0x12/0x17<br>
Sep 6 10:41:00 mgs1 kernel: Code: 47 fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 66 90 b9 01 00 00 00 8b 17 85 d2 74 0d 83 fa 03 74 08 f3 90 <8b> 17 85 d2 75 f3 89 d0 f0 0f b1 0f 39 c2 75 e3 5d 66 90 c3 0f
<o:p></o:p></p>
<p style="margin-left:35.4pt"><o:p> </o:p></p>
<p style="margin-left:35.4pt">Has anyone else also experienced this issue?<o:p></o:p></p>
<p style="margin-left:35.4pt">Is there a way to make this work?<o:p></o:p></p>
<p style="margin-left:35.4pt"><o:p> </o:p></p>
<p style="margin-left:35.4pt">Thanks,<o:p></o:p></p>
<pre style="margin-left:35.4pt">-- <o:p></o:p></pre>
<pre style="margin-left:35.4pt">Tamás Kazinczy<o:p></o:p></pre>
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