<div dir="auto"><div><br><div class="gmail_extra"><br><div class="gmail_quote">On Oct 6, 2017 2:41 PM, "Gianluca Cecchi" <<a href="mailto:gianluca.cecchi@gmail.com">gianluca.cecchi@gmail.com</a>> wrote:<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hello,<div>I'm relocating some disks from some storage domains to other ones.</div><div>At the end I'm going to remove source storage domains.</div><div>All the SD involved are FC and the hosts are CentOS 7.4</div><div>I see that after removing an SD from oVirt, the multipath part on host remains.</div><div>What is the correct sequence of operations to do at hosts' side after completing the Webadmin Gui part?</div></div></blockquote></div></div></div><div dir="auto"><br></div><div dir="auto"><a href="https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/storage_administration_guide/removing_devices">https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/storage_administration_guide/removing_devices</a><br></div><div dir="auto"><br></div><div dir="auto">(which seems to be similar to your steps below. I'd remove it from the storage side after flushing though). </div><div dir="auto">Y. </div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><br></div><div>Some questions:</div><div>- do the remove SD from gui imply vgchange -an of the VG and vgremove of the vg?</div><div>Or are they delegated to post actions?</div><div><br></div><div>- do it imply the pvremove on the LUN?</div><div><br></div><div>After clearing what above I would imagine remaining steps would be, based on my previous similar experience with iSCSI removal on physical servers:</div><div><br></div><div>- take note of the paths sdY, ... of mpathX</div><div><br></div><div>- remove the multipath device with</div><div>multipath -f mpathX</div><div><br></div><div>- flush the single paths devices</div><div>blockdev --flushbufs sdY for every path of the previous taken note ones</div><div><br></div><div>- remove single path devices</div><div>echo 1 > /sys/block/sdY/device/delete</div><div><br></div><div>- remove LUN from storage array</div><div>when previous steps done on all the hypervisors</div><div><br></div><div>Any comment?</div><div>Any further step at vdsm level files..?</div><div><br></div><div>Thanks in advance,</div><div>Gianluca</div><div><br></div></div>
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