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Dean,
<div class="">it should be emphasized that "llmount.sh" and "llmountcleanup.sh" are for quickly formatting and mounting *TEST* filesystems. They only create a few small (400MB) loopback files in /tmp and format them as OSTs and MDTs. This should *NOT* be
used on a production system, or you will be very sad when the files in /tmp disappear after the server is rebooted and/or they reformat your real filesystem devices.
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<div class="">I mention this here because it isn't clear to me whether you are using them for testing, or trying to get a real filesystem mounted.</div>
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<div class="">Cheers, Andreas<br class="">
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<div class="">On Nov 19, 2021, at 13:25, STEPHENS, DEAN - US via lustre-discuss <<a href="mailto:lustre-discuss@lists.lustre.org" class="">lustre-discuss@lists.lustre.org</a>> wrote:</div>
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I also figure out how to clean up after the llmount.sh script is run. There is a llmountcleanup.sh that will do that.<o:p class=""></o:p></div>
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Dean<o:p class=""></o:p></div>
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<b class="">From:</b><span class="Apple-converted-space"> </span>STEPHENS, DEAN - US<span class="Apple-converted-space"> </span><br class="">
<b class="">Sent:</b><span class="Apple-converted-space"> </span>Friday, November 19, 2021 1:08 PM<br class="">
<b class="">To:</b><span class="Apple-converted-space"> </span>Colin Faber <<a href="mailto:cfaber@gmail.com" class="">cfaber@gmail.com</a>><br class="">
<b class="">Cc:</b><span class="Apple-converted-space"> </span><a href="mailto:lustre-discuss@lists.lustre.org" class="">lustre-discuss@lists.lustre.org</a><br class="">
<b class="">Subject:</b><span class="Apple-converted-space"> </span>RE: [lustre-discuss] Lustre and server upgrade<o:p class=""></o:p></div>
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One more thing that I have noticed using the llmount.sh script, the directories that were created by the script under /mnt have 000 set for the permissions. The ones that I have configure under /mnt/lustre are set to 750 permissions.<o:p class=""></o:p></div>
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Is this something that needs to be fixed. I have these server being configure via puppet and that is how the /mnt/lustre directories are being created and the permissions set.<o:p class=""></o:p></div>
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Dean<o:p class=""></o:p></div>
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<b class="">From:</b><span class="Apple-converted-space"> </span>STEPHENS, DEAN - US<span class="Apple-converted-space"> </span><br class="">
<b class="">Sent:</b><span class="Apple-converted-space"> </span>Friday, November 19, 2021 7:14 AM<br class="">
<b class="">To:</b><span class="Apple-converted-space"> </span>Colin Faber <<a href="mailto:cfaber@gmail.com" class="">cfaber@gmail.com</a>><br class="">
<b class="">Cc:</b><span class="Apple-converted-space"> </span><a href="mailto:lustre-discuss@lists.lustre.org" class="">lustre-discuss@lists.lustre.org</a><br class="">
<b class="">Subject:</b><span class="Apple-converted-space"> </span>RE: [lustre-discuss] Lustre and server upgrade<o:p class=""></o:p></div>
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The other question that I have is how to clean up after the llmount.sh has been run? If I do a df on the server I see that mds1, osd1, and ost2 are still mounted to /mnt. Do I need to manually umount them since the llmount.sh completed successfully?<o:p class=""></o:p></div>
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Also I have not done anything to my MDS node so some direction on what to do there will be helpful as well.<o:p class=""></o:p></div>
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Dean<o:p class=""></o:p></div>
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<b class="">From:</b><span class="Apple-converted-space"> </span>STEPHENS, DEAN - US<span class="Apple-converted-space"> </span><br class="">
<b class="">Sent:</b><span class="Apple-converted-space"> </span>Friday, November 19, 2021 7:00 AM<br class="">
<b class="">To:</b><span class="Apple-converted-space"> </span>Colin Faber <<a href="mailto:cfaber@gmail.com" style="color: blue; text-decoration: underline;" class="">cfaber@gmail.com</a>><br class="">
<b class="">Cc:</b><span class="Apple-converted-space"> </span><a href="mailto:lustre-discuss@lists.lustre.org" style="color: blue; text-decoration: underline;" class="">lustre-discuss@lists.lustre.org</a><br class="">
<b class="">Subject:</b><span class="Apple-converted-space"> </span>RE: [lustre-discuss] Lustre and server upgrade<o:p class=""></o:p></div>
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Thanks for the help yesterday and I was able to install the Lustre kernel and software on a VM to include the test RPM.<o:p class=""></o:p></div>
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This is what I did following<span class="Apple-converted-space"> </span><a href="https://wiki.lustre.org/Installing_the_Lustre_Software#Lustre_Servers_with_LDISKFS_OSD_Support" style="color: blue; text-decoration: underline;" class="">these directions</a>:<o:p class=""></o:p></div>
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Installed the Lustre kernel and kernel-devel (the other RPMs listed were not in my luster-server repo)<o:p class=""></o:p></div>
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Rebooted the VM<o:p class=""></o:p></div>
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Installed kmod-lustre kmod-lustre-osd-ldiskfs lustre-osd-ldiskfs-mount lustre lustre-resource-agents lustre-tests<o:p class=""></o:p></div>
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Ran modprobe -v lustre (did not show that it loaded kernel modules as it has done in the past)<o:p class=""></o:p></div>
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Ran lustre_rmmod (got an error Module Luster in use)<o:p class=""></o:p></div>
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Rebooted again<o:p class=""></o:p></div>
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Ran llmount.sh and it looked like it completed successfully<o:p class=""></o:p></div>
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Ran tunefs.lustre /dev/sdb (at the bottom of the output I am seeing tunefs.luster: Unable to mount /dev/sdb: Invalid argument and tunefs.luster: FATAL: failed to write local files and tunefs.luster: exiting with 22 (Invalid argument))<o:p class=""></o:p></div>
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Any idea what the “invalid argument” is talking about?<o:p class=""></o:p></div>
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Dean<o:p class=""></o:p></div>
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<b class="">From:</b><span class="Apple-converted-space"> </span>Colin Faber <<a href="mailto:cfaber@gmail.com" style="color: blue; text-decoration: underline;" class="">cfaber@gmail.com</a>><span class="Apple-converted-space"> </span><br class="">
<b class="">Sent:</b><span class="Apple-converted-space"> </span>Thursday, November 18, 2021 3:34 PM<br class="">
<b class="">To:</b><span class="Apple-converted-space"> </span>STEPHENS, DEAN - US <<a href="mailto:dean.stephens@caci.com" style="color: blue; text-decoration: underline;" class="">dean.stephens@caci.com</a>><br class="">
<b class="">Cc:</b><span class="Apple-converted-space"> </span><a href="mailto:lustre-discuss@lists.lustre.org" style="color: blue; text-decoration: underline;" class="">lustre-discuss@lists.lustre.org</a><br class="">
<b class="">Subject:</b><span class="Apple-converted-space"> </span>Re: [lustre-discuss] Lustre and server upgrade<o:p class=""></o:p></div>
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The VM will need a full install of all server packages, as well as the tests package to allow for this test.<o:p class=""></o:p></div>
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On Thu, Nov 18, 2021 at 2:26 PM STEPHENS, DEAN - US <<a href="mailto:dean.stephens@caci.com" style="color: blue; text-decoration: underline;" class="">dean.stephens@caci.com</a>> wrote:<o:p class=""></o:p></div>
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I have not tried that but I can do that on a new VM that I can create. I assume that is all that I need is the lustre-tests RPM and associated dependencies and not the full blown lustre install?<span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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Dean<o:p class=""></o:p></div>
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<b class="">From:</b><span class="Apple-converted-space"> </span>Colin Faber <<a href="mailto:cfaber@gmail.com" target="_blank" style="color: blue; text-decoration: underline;" class="">cfaber@gmail.com</a>><span class="Apple-converted-space"> </span><br class="">
<b class="">Sent:</b><span class="Apple-converted-space"> </span>Thursday, November 18, 2021 2:22 PM<br class="">
<b class="">To:</b><span class="Apple-converted-space"> </span>STEPHENS, DEAN - US <<a href="mailto:dean.stephens@caci.com" target="_blank" style="color: blue; text-decoration: underline;" class="">dean.stephens@caci.com</a>><br class="">
<b class="">Cc:</b><span class="Apple-converted-space"> </span><a href="mailto:lustre-discuss@lists.lustre.org" target="_blank" style="color: blue; text-decoration: underline;" class="">lustre-discuss@lists.lustre.org</a><br class="">
<b class="">Subject:</b><span class="Apple-converted-space"> </span>Re: [lustre-discuss] Lustre and server upgrade<o:p class=""></o:p></div>
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So that indicates that your installation is incomplete or something else is preventing lustre, ldiskfs, and possibly other modules from loading. Have you been able to reproduce this behavior on a fresh rhel install with lustre 2.12.7? (i.e. llmount.sh failing)?<o:p class=""></o:p></div>
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-cf<o:p class=""></o:p></div>
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On Thu, Nov 18, 2021 at 2:20 PM STEPHENS, DEAN - US <<a href="mailto:dean.stephens@caci.com" target="_blank" style="color: blue; text-decoration: underline;" class="">dean.stephens@caci.com</a>> wrote:<o:p class=""></o:p></div>
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Thanks for the direction. I found it and installed lustre-tests.x86_64 and now I have the llmount but it was defaulted to /usr/lib64/lustre/tests/llmount.sh and when I ran it but it failed with:<o:p class=""></o:p></div>
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Stopping clients: <hostname> /mnt/lustre (opts: -f)<o:p class=""></o:p></div>
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Stopping clients: <hostname> /mnt/lustre2 (opts: -f)<o:p class=""></o:p></div>
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Loading modules from /usr/lib64/lustre/tests/..<o:p class=""></o:p></div>
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Detected 2 online CPUs by sysfs<o:p class=""></o:p></div>
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Force libcfs to create 2 CPU partitions<o:p class=""></o:p></div>
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Formatting mgs, mds, osts<o:p class=""></o:p></div>
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Format mds1: /tmp/lustre-mdt1<o:p class=""></o:p></div>
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Mkfs.lustre: Unable to mount /dev/loop0: No such device (even though /dev/loop0 is a thing)<br class="">
Is the ldiskfs module loaded?<o:p class=""></o:p></div>
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Mkfs.lustre FATAL: failed to write local files<o:p class=""></o:p></div>
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Mkfs.lustre: exiting with 19 (no such device)<o:p class=""></o:p></div>
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<b class="">From:</b><span class="Apple-converted-space"> </span>Colin Faber <<a href="mailto:cfaber@gmail.com" target="_blank" style="color: blue; text-decoration: underline;" class="">cfaber@gmail.com</a>><span class="Apple-converted-space"> </span><br class="">
<b class="">Sent:</b><span class="Apple-converted-space"> </span>Thursday, November 18, 2021 2:03 PM<br class="">
<b class="">To:</b><span class="Apple-converted-space"> </span>STEPHENS, DEAN - US <<a href="mailto:dean.stephens@caci.com" target="_blank" style="color: blue; text-decoration: underline;" class="">dean.stephens@caci.com</a>><br class="">
<b class="">Cc:</b><span class="Apple-converted-space"> </span><a href="mailto:lustre-discuss@lists.lustre.org" target="_blank" style="color: blue; text-decoration: underline;" class="">lustre-discuss@lists.lustre.org</a><br class="">
<b class="">Subject:</b><span class="Apple-converted-space"> </span>Re: [lustre-discuss] Lustre and server upgrade<o:p class=""></o:p></div>
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This would be part of the lustre-tests RPM package and will install llmount.sh to /usr/lib/lustre/tests/llmount.sh I believe.<o:p class=""></o:p></div>
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On Thu, Nov 18, 2021 at 1:45 PM STEPHENS, DEAN - US <<a href="mailto:dean.stephens@caci.com" target="_blank" style="color: blue; text-decoration: underline;" class="">dean.stephens@caci.com</a>> wrote:<o:p class=""></o:p></div>
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Not sure what you mean by “If you install the test suite”. I am not seeing a llmount.sh file on the server using “locate llmount.sh” at this point. What are the steps to install the test suite?<o:p class=""></o:p></div>
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Dean<o:p class=""></o:p></div>
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<b class="">From:</b><span class="Apple-converted-space"> </span>Colin Faber <<a href="mailto:cfaber@gmail.com" target="_blank" style="color: blue; text-decoration: underline;" class="">cfaber@gmail.com</a>><span class="Apple-converted-space"> </span><br class="">
<b class="">Sent:</b><span class="Apple-converted-space"> </span>Thursday, November 18, 2021 1:34 PM<br class="">
<b class="">To:</b><span class="Apple-converted-space"> </span>STEPHENS, DEAN - US <<a href="mailto:dean.stephens@caci.com" target="_blank" style="color: blue; text-decoration: underline;" class="">dean.stephens@caci.com</a>><br class="">
<b class="">Cc:</b><span class="Apple-converted-space"> </span><a href="mailto:lustre-discuss@lists.lustre.org" target="_blank" style="color: blue; text-decoration: underline;" class="">lustre-discuss@lists.lustre.org</a><br class="">
<b class="">Subject:</b><span class="Apple-converted-space"> </span>Re: [lustre-discuss] Lustre and server upgrade<o:p class=""></o:p></div>
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Hm.. If you install the test suite does llmount.sh succeed? This should setup a single node cluster on whatever node you're running lustre on, I believe it will load modules as needed (IIRC), if this test succeeds, then you know that lustre is installed correctly
(or correctly enough), if not, I'd focus on the installation as the target issue may be a redheirring<o:p class=""></o:p></div>
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On Thu, Nov 18, 2021 at 1:01 PM STEPHENS, DEAN - US <<a href="mailto:dean.stephens@caci.com" target="_blank" style="color: blue; text-decoration: underline;" class="">dean.stephens@caci.com</a>> wrote:<o:p class=""></o:p></div>
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Thanks for the fast reply.<o:p class=""></o:p></div>
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When I do the tunefs.lustre /dev/sdX command I get:<o:p class=""></o:p></div>
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Target: <name>-OST0009<o:p class=""></o:p></div>
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Index: 9<o:p class=""></o:p></div>
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Target: <name>-OST0008<o:p class=""></o:p></div>
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Index: 8<o:p class=""></o:p></div>
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I spot checked some others and they seem to be good with the exception of one. It shows:<o:p class=""></o:p></div>
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Target: <name>-OST000a<o:p class=""></o:p></div>
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Index: 10<o:p class=""></o:p></div>
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But since there are 11 LUNs attached that make sense to me.<o:p class=""></o:p></div>
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As far as the upgrade it was a fresh install using the legacy targets as the OSS and MDS nodes are virtual machine with the LUN disks attached to them so that Red Hat sees them as /dev/sdX devices.<o:p class=""></o:p></div>
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When I loaded Lustre on the server I did a yum install lustre and since we were pointed at the lustre-2.12 repo in our environment it picked up the following RPMs to install:<o:p class=""></o:p></div>
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Luster-resource-agents-2.12.6-1.el7.x86_64<o:p class=""></o:p></div>
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Kmod-lustre-2.12.6-1.el7.x86_64<o:p class=""></o:p></div>
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Kmod-zfs-3.10.0-1160.2.1.el7_lustre.x86_64-09.7.13-1.el7.x86_64<o:p class=""></o:p></div>
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Kmod-lustre-osd-zfs-2.12.6-1.el7.x86_64<o:p class=""></o:p></div>
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Kmod-spl-3.10.0-1160.2.1.el7_lustre.x86_64-09.7.13-1.el7.x86_64<o:p class=""></o:p></div>
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Lustre-osd-zfs-mount-2.12.6-1.el7.x86_64<o:p class=""></o:p></div>
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Lustre-osd-ldiskfs-mount-2.12.6-1.el7.x86_64<o:p class=""></o:p></div>
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Dean<o:p class=""></o:p></div>
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<b class="">From:</b><span class="Apple-converted-space"> </span>Colin Faber <<a href="mailto:cfaber@gmail.com" target="_blank" style="color: blue; text-decoration: underline;" class="">cfaber@gmail.com</a>><span class="Apple-converted-space"> </span><br class="">
<b class="">Sent:</b><span class="Apple-converted-space"> </span>Thursday, November 18, 2021 12:35 PM<br class="">
<b class="">To:</b><span class="Apple-converted-space"> </span>STEPHENS, DEAN - US <<a href="mailto:dean.stephens@caci.com" target="_blank" style="color: blue; text-decoration: underline;" class="">dean.stephens@caci.com</a>><br class="">
<b class="">Cc:</b><span class="Apple-converted-space"> </span><a href="mailto:lustre-discuss@lists.lustre.org" target="_blank" style="color: blue; text-decoration: underline;" class="">lustre-discuss@lists.lustre.org</a><br class="">
<b class="">Subject:</b><span class="Apple-converted-space"> </span>Re: [lustre-discuss] Lustre and server upgrade<o:p class=""></o:p></div>
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<span style="font-size: 12pt; color: red;" class="">EXTERNAL EMAIL - This email originated from outside of CACI. Do not click any links or attachments unless you recognize and trust the sender.</span><o:p class=""></o:p></p>
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Hi,<o:p class=""></o:p></div>
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I believe in 2.10 sometime (someone correct me if I'm wrong) that the index parameter was required and needs to be specified. On an existing system this should already be set, but can you check the parameters line with tunefs.lustre for correct index=N values
across your storage nodes?<o:p class=""></o:p></div>
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Also, with your "upgrade", was this a fresh install utilizing legacy targets?<o:p class=""></o:p></div>
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The last thing I can think of IIRC, there was on-disk format changes between 2.5 and 2.12, these should be transparent to you, but it may be some other issue is preventing successful upgrade, though the missing module error really speaks to possible issues
around how lustre was installed and loaded on the system.<o:p class=""></o:p></div>
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Cheers!<o:p class=""></o:p></div>
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On Thu, Nov 18, 2021 at 12:24 PM STEPHENS, DEAN - US via lustre-discuss <<a href="mailto:lustre-discuss@lists.lustre.org" target="_blank" style="color: blue; text-decoration: underline;" class="">lustre-discuss@lists.lustre.org</a>> wrote:<o:p class=""></o:p></div>
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I am by no means a Lustre expert and am seeking some help with our system. I am not able to get log file to post as the servers are in the closed area with no access to the Internet.<o:p class=""></o:p></div>
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Here is a bit of history of our system:<o:p class=""></o:p></div>
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The OSS and MDS nodes were RHEL6 and running a Luster server the kernel 2.6.32-431.23.3.el6_lustre.x86_64 and the Lustre version of 2.5.3. the client version was 2.10. That was in a working state.<span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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We upgraded the OSS ad MDS nodes to RHEL7 and installed Lustre server 2.12 software and kernel.<o:p class=""></o:p></div>
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The attached 11 LUNs are showing up as /dev/sdb - /dev/sdl<o:p class=""></o:p></div>
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Right now, on the OSS nodes, if I use the command tunefs.luster /dev/sdb I get some data back saying that Lustre data has been found but at the bottom of the out put it shows “tunefs.lustre: Unable to mount /dev/sdb: No such device” and “Is the ldiskfs module
available”<o:p class=""></o:p></div>
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When I do a “modprobe -v lustre” I do not see ldiskfs.ko as being loaded even though there is a ldiskfs.ko file in /lib/modules/3.10.0-1160.2.1.el7_lustre.x86_64/extra/lustre/fs directory. I am not sure how to get it to load in the modprobe command.<o:p class=""></o:p></div>
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I used “insmod /lib/modules/3.10.0-1160.2.1.el7_lustre.x86_64/extra/lustre/fs/ ldiskfs.ko” and re-ran the “tunefs.luster /dev/sdb” command with the same result.<o:p class=""></o:p></div>
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If I use the same command on the MDS nodes I get “no Lustre data found and /dev/sdb has not been formatted with mkfs.lustre”. I am not sure that is what is needed here as the MDS nodes do not really have the lustre data as it is the meta data server.<o:p class=""></o:p></div>
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I tried to use the command “tunefs.lustre --mgs --erase_params --mgsnode=<IP address>@tcp --writeconf --dryrun /dev/sdb” and get the error “/dev/sdb has not been formatted with mkfs.lustre”.<span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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I need some help and guidance and I can provide what may be needed though it will need to be typed out as I am not able to get actual log files from the system.<o:p class=""></o:p></div>
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<div>Cheers, Andreas</div>
<div>--</div>
<div>Andreas Dilger</div>
<div>Lustre Principal Architect</div>
<div>Whamcloud</div>
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