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Hi John,
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<div class="">Yes, you can remove one of the servers and yes, we’ve done it and yes, the documentation is clear and correct. ;-)</div>
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<div class="">Last time I did this we were in a full cluster downtime, so unmounting wasn’t an issue. We were changing our network architecture and so the IP addresses of all NSD servers save one were changing. It was a bit … uncomfortable … for the brief
period of time I had to make the one NSD server the one and only NSD server for ~1 PB of storage! But it worked just fine…</div>
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<div class="">HTHAL…</div>
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<div class="">Kevin<br class="">
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<div class="">On Apr 4, 2018, at 4:11 AM, John Hearns <<a href="mailto:john.hearns@asml.com" class="">john.hearns@asml.com</a>> wrote:</div>
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I should say I already have a support ticket open for advice on this issue.<o:p class=""></o:p></div>
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We have a filesystem which has NSDs which have two servers defined, for instance:<o:p class=""></o:p></div>
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nsd:<o:p class=""></o:p></div>
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device=/dev/sdb<o:p class=""></o:p></div>
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servers=sn007,sn008<o:p class=""></o:p></div>
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nsd=nsd1<o:p class=""></o:p></div>
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usage=dataOnly<o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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Can I remove one of these servers? The object is to upgrade this server and change its hostname, the physical server will stay in place.<o:p class=""></o:p></div>
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Has anyone carried out an operation similar to this?<o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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I guess the documentation here is quite clear:<o:p class=""></o:p></div>
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“<span lang="EN" class="">If you want to change configuration for a NSD which is already belongs to a file system, you need to unmount the file system before running mmchnsd command.”</span><o:p class=""></o:p></div>
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