<div dir="ltr">For S: Help mounting MDT to Alastair,<div>Just to clarify, you mentioned that the MDT is ldiskfs, but are you mounting the MDT as a part of a full Lustre File System on the MDS server, are you mounting te MDT as type lustre? </div><div><br></div><div>Cheers,</div><div>megan</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Oct 5, 2020 at 4:50 PM <<a href="mailto:lustre-discuss-request@lists.lustre.org">lustre-discuss-request@lists.lustre.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Send lustre-discuss mailing list submissions to<br>
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Today's Topics:<br>
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1. Help mounting MDT (Alastair Basden)<br>
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Message: 1<br>
Date: Mon, 5 Oct 2020 16:28:37 +0100 (BST)<br>
From: Alastair Basden <<a href="mailto:a.g.basden@durham.ac.uk" target="_blank">a.g.basden@durham.ac.uk</a>><br>
To: <a href="mailto:lustre-discuss@lists.lustre.org" target="_blank">lustre-discuss@lists.lustre.org</a><br>
Subject: [lustre-discuss] Help mounting MDT<br>
Message-ID: <alpine.DEB.2.22.394.2010051620120.2902@xps14><br>
Content-Type: text/plain; format=flowed; charset=US-ASCII<br>
<br>
Hi all,<br>
<br>
We are having a problem mounting a ldiskfs mdt. The mount command is <br>
hanging, with /var/log/messages containing:<br>
Oct 5 16:26:17 c6mds1 kernel: INFO: task mount.lustre:4285 blocked for more than 120 seconds.<br>
Oct 5 16:26:17 c6mds1 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.<br>
Oct 5 16:26:17 c6mds1 kernel: mount.lustre D ffff92cd279de2a0 0 4285 4284 0x00000082<br>
Oct 5 16:26:17 c6mds1 kernel: Call Trace:<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8db7f229>] schedule+0x29/0x70<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8db7cbb1>] schedule_timeout+0x221/0x2d0<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8d4e64a8>] ? enqueue_task_fair+0x208/0x6c0<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8d4dd425>] ? sched_clock_cpu+0x85/0xc0<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8d4d6500>] ? check_preempt_curr+0x80/0xa0<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8d4d6539>] ? ttwu_do_wakeup+0x19/0xe0<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8db7f5dd>] wait_for_completion+0xfd/0x140<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8d4da0b0>] ? wake_up_state+0x20/0x20<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0cd69d4>] llog_process_or_fork+0x244/0x450 [obdclass]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0cd6bf4>] llog_process+0x14/0x20 [obdclass]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0d09eb5>] class_config_parse_llog+0x125/0x350 [obdclass]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0804fc0>] mgc_process_cfg_log+0x790/0xc40 [mgc]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc08084cc>] mgc_process_log+0x3dc/0x8f0 [mgc]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc080915f>] ? config_recover_log_add+0x13f/0x280 [mgc]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0d120f0>] ? class_config_dump_handler+0x7e0/0x7e0 [obdclass]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0809b2b>] mgc_process_config+0x88b/0x13f0 [mgc]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0d15d08>] lustre_process_log+0x2d8/0xad0 [obdclass]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0bdff97>] ? libcfs_debug_msg+0x57/0x80 [libcfs]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0d00a69>] ? lprocfs_counter_add+0xf9/0x160 [obdclass]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0d449f4>] server_start_targets+0x13a4/0x2a20 [obdclass]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0d18d60>] ? lustre_start_mgc+0x260/0x2510 [obdclass]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0d120f0>] ? class_config_dump_handler+0x7e0/0x7e0 [obdclass]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0d4713c>] server_fill_super+0x10cc/0x1890 [obdclass]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0d1ba78>] lustre_fill_super+0x328/0x950 [obdclass]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0d1b750>] ? lustre_common_put_super+0x270/0x270 [obdclass]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8d64c67f>] mount_nodev+0x4f/0xb0<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffffc0d13b58>] lustre_mount+0x38/0x60 [obdclass]<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8d64d1fe>] mount_fs+0x3e/0x1b0<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8d66b387>] vfs_kern_mount+0x67/0x110<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8d66dadf>] do_mount+0x1ef/0xce0<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8d64521a>] ? __check_object_size+0x1ca/0x250<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8d62368c>] ? kmem_cache_alloc_trace+0x3c/0x200<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8d66e913>] SyS_mount+0x83/0xd0<br>
Oct 5 16:26:17 c6mds1 kernel: [<ffffffff8db8cede>] system_call_fastpath+0x25/0x2a<br>
<br>
<br>
This is Lustre 2.12.2 on CentOS 7.6<br>
<br>
Does anyone have any suggestions?<br>
<br>
Cheers,<br>
Alastair.<br>
<br>
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End of lustre-discuss Digest, Vol 175, Issue 2<br>
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