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<p class="MsoNormal">My apologies – you are correct. I was thinking of the "multiple file systems per MDS" scenario.
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">Colin Faber <colin.faber@seagate.com><br>
<b>Date: </b>Friday, September 15, 2017 at 12:13 PM<br>
<b>To: </b>Darby Vicker <darby.vicker-1@nasa.gov><br>
<b>Cc: </b>Ravi Konila <ravibhatk@gmail.com>, Lustre Discuss <lustre-discuss@lists.lustre.org><br>
<b>Subject: </b>Re: [lustre-discuss] Multiple Lustre filesystem<o:p></o:p></span></p>
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<p class="MsoNormal">Hi, <o:p></o:p></p>
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<p class="MsoNormal">It appears that In such a case you're still utilizing different targets for your MDT(s) (on the same MDS), that said, I do not know what the ramifications of running multiple MDT's for different file systems against the same MDS would be
as I have never attempted such a configuration.<o:p></o:p></p>
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<p class="MsoNormal">-cf<o:p></o:p></p>
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<p class="MsoNormal">On Fri, Sep 15, 2017 at 10:29 AM, Vicker, Darby (JSC-EG311) <<a href="mailto:darby.vicker-1@nasa.gov" target="_blank">darby.vicker-1@nasa.gov</a>> wrote:<o:p></o:p></p>
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From: lustre-discuss <<a href="mailto:lustre-discuss-bounces@lists.lustre.org">lustre-discuss-bounces@lists.lustre.org</a>> on behalf of Colin Faber <<a href="mailto:colin.faber@seagate.com">colin.faber@seagate.com</a>><br>
Date: Friday, September 15, 2017 at 9:48 AM<br>
To: Ravi Konila <<a href="mailto:ravibhatk@gmail.com">ravibhatk@gmail.com</a>><br>
Cc: Lustre Discuss <<a href="mailto:lustre-discuss@lists.lustre.org">lustre-discuss@lists.lustre.org</a>><br>
Subject: Re: [lustre-discuss] Multiple Lustre filesystem<br>
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>> 3. With single MDT can I have multiple Lustre file system?<br>
>><br>
> No<br>
<br>
I don't think that's right. We are serving 2 separate file systems with the same MDT. We are using 2.10 with a ZFS backend. Our /etc/ldev.conf looks something like this:<br>
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#local foreign/- label [md|zfs:]device-path [journal-path]/- [raidtab]<br>
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# primary hpfs-fsl (aka /nobackup) lustre file system<br>
<a href="http://hpfs-fsl-mds0.jsc.nasa.gov" target="_blank">hpfs-fsl-mds0.jsc.nasa.gov</a>
<a href="http://hpfs-fsl-mds1.jsc.nasa.gov" target="_blank">hpfs-fsl-mds1.jsc.nasa.gov</a> hpfs-fsl-MDT0000 zfs:metadata/meta-fsl<br>
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<a href="http://hpfs-fsl-oss00.jsc.nasa.gov" target="_blank">hpfs-fsl-oss00.jsc.nasa.gov</a>
<a href="http://hpfs-fsl-oss01.jsc.nasa.gov" target="_blank">hpfs-fsl-oss01.jsc.nasa.gov</a> hpfs-fsl-OST0000 zfs:oss00-0/ost-fsl<br>
<a href="http://hpfs-fsl-oss01.jsc.nasa.gov" target="_blank">hpfs-fsl-oss01.jsc.nasa.gov</a>
<a href="http://hpfs-fsl-oss00.jsc.nasa.gov" target="_blank">hpfs-fsl-oss00.jsc.nasa.gov</a> hpfs-fsl-OST0001 zfs:oss01-0/ost-fsl<br>
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# primary eadc (aka /eadc_lustre) lustre file system<br>
<a href="http://hpfs-fsl-mds0.jsc.nasa.gov" target="_blank">hpfs-fsl-mds0.jsc.nasa.gov</a>
<a href="http://hpfs-fsl-mds1.jsc.nasa.gov" target="_blank">hpfs-fsl-mds1.jsc.nasa.gov</a> eadc-MDT0000 zfs:metadata/meta-eadc<br>
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<a href="http://hpfs-fsl-oss00.jsc.nasa.gov" target="_blank">hpfs-fsl-oss00.jsc.nasa.gov</a>
<a href="http://hpfs-fsl-oss01.jsc.nasa.gov" target="_blank">hpfs-fsl-oss01.jsc.nasa.gov</a> eadc-OST0000 zfs:oss00-0/ost-eadc<br>
<a href="http://hpfs-fsl-oss01.jsc.nasa.gov" target="_blank">hpfs-fsl-oss01.jsc.nasa.gov</a>
<a href="http://hpfs-fsl-oss00.jsc.nasa.gov" target="_blank">hpfs-fsl-oss00.jsc.nasa.gov</a> eadc-OST0001 zfs:oss01-0/ost-eadc<br>
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