<div class="socmaildefaultfont" dir="ltr" style="font-family:Arial, Helvetica, sans-serif;font-size:10.5pt" ><div dir="ltr" >Harold,</div>
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<div dir="ltr" >How big is the old file system, Spectrum Scale is going to throw a bunch of errors if you remove the luns from the old file system while attempting to keep the file system "data" on the luns. its likely to cause you all sorts of errors and potential data corruption. Its not something that I would recommend.</div>
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<div dir="ltr" >Can you do a backup of the old filesystem so you can do a restore of data if you need to?</div>
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<div dir="ltr" >Regards,</div>
<div dir="ltr" ><div class="socmaildefaultfont" dir="ltr" style="font-family:Arial;font-size:10.5pt" ><div class="socmaildefaultfont" dir="ltr" style="font-family:Arial;font-size:10.5pt" ><div class="socmaildefaultfont" dir="ltr" style="font-family:Arial;font-size:10.5pt" ><div dir="ltr" style="margin-top: 20px;" ><div style="font-size: 12pt; font-weight: bold; font-family: sans-serif; color: #7C7C5F;" >Andrew Beattie</div>
<div style="font-size: 10pt; font-weight: bold; font-family: sans-serif;" >Software Defined Storage - IT Specialist</div>
<div style="font-size: 8pt; font-family: sans-serif; margin-top: 10px;" ><div><span style="font-weight: bold; color: #336699;" >Phone: </span>614-2133-7927</div>
<div><span style="font-weight: bold; color: #336699;" >E-mail: </span><a href="mailto:abeattie@au1.ibm.com" style="color: #555" >abeattie@au1.ibm.com</a></div></div></div></div></div></div></div>
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<blockquote data-history-content-modified="1" dir="ltr" style="border-left:solid #aaaaaa 2px; margin-left:5px; padding-left:5px; direction:ltr; margin-right:0px" >----- Original message -----<br>From: Harold Morales <hmorales@optimizeit.co><br>Sent by: gpfsug-discuss-bounces@spectrumscale.org<br>To: gpfsug-discuss@spectrumscale.org<br>Cc:<br>Subject: [gpfsug-discuss] Removing LUN from host without unconfiguring GPFS filesystem<br>Date: Mon, Jan 22, 2018 7:20 AM<br>
<div dir="ltr" ><div style="font-family:tahoma,sans-serif;font-size:small" >Hello,</div>
<div style="font-family:tahoma,sans-serif;font-size:small" > </div>
<div style="font-family:tahoma,sans-serif;font-size:small" >I have a GPFS cluster with two filesystems. The disks associated to one filesystem reside on an old storage and the other filesystem disks reside on a much more modern storage system. I have successfully moved data from one fs to the other but there are questions about data integrity that still need verification so the old filesystem needs somehow to be preserved.</div>
<div style="font-family:tahoma,sans-serif;font-size:small" > </div>
<div style="font-family:tahoma,sans-serif;font-size:small" >My question is: Can I remove the old filesystem LUNs association to the NSDs servers without removing spectrum scale filesystems, so that later on, if necessary, I could associate them back and the old filesystem would be operating as normal? If possible: what would be the general steps to achieve this?</div>
<div style="font-family:tahoma,sans-serif;font-size:small" > </div>
<div style="font-family:tahoma,sans-serif;font-size:small" >-----</div>
<div style="font-family:tahoma,sans-serif;font-size:small" >Thank you,</div>
<div style="font-family:tahoma,sans-serif;font-size:small" > </div>
<div style="font-family:tahoma,sans-serif;font-size:small" >Harold.</div>
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