<div dir="ltr"><br><br><div class="gmail_quote"><div dir="ltr">On Thu, Sep 28, 2017 at 1:39 PM Gianluca Cecchi <<a href="mailto:gianluca.cecchi@gmail.com">gianluca.cecchi@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Thu, Sep 28, 2017 at 11:02 AM, Gianluca Cecchi <span dir="ltr"><<a href="mailto:gianluca.cecchi@gmail.com" target="_blank">gianluca.cecchi@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hello,<div>I'm on 4.1.5 and I'm cloning a snapshot of a VM with 3 disks for a total of about 200Gb to copy</div><div>The target I choose is on a different domain than the source one.</div><div>They are both FC storage domains, with the source on SSD disks and the target on SAS disks.</div><div><br></div><div>The disks are preallocated</div><div><br></div><div>Now I have 3 processes of kind:</div><div><div>/usr/bin/qemu-img convert -p -t none -T none -f raw /rhev/data-center/59b7af54-0155-01c2-0248-000000000195/fad05d79-254d-4f40-8201-360757128ede/images/8f62600a-057d-4d59-9655-631f080a73f6/21a8812f-6a89-4015-a79e-150d7e202450 -O raw /rhev/data-center/mnt/blockSD/6911716c-aa99-4750-a7fe-f83675a2d676/images/c3973d1b-a168-4ec5-8c1a-630cfc4b66c4/27980581-5935-4b23-989a-4811f80956ca</div></div><div><br></div><div>but despite capabilities it seems it is copying using very low system resources.</div><div><br></div></div></blockquote></div></div></div><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div>[snip] </div></div></div></div><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div></div><div><br></div><div>Is it expected? Any way to speed up the process?</div><div><br></div><div>Thanks,</div><div>Gianluca</div></div>
</blockquote></div></div></div><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"></div><br></div><div class="gmail_extra">The cloning process elapsed was 101'</div><div class="gmail_extra">The 3 disks are 85Gb, 20Gb and 80Gb so at the end an average of 30MB/s </div></div></blockquote><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra">At this moment I have only one host with self hosted engine VM running in this environment, planning to add another host in short time.</div><div class="gmail_extra">So not yet configured power mgmt for fencing on it</div><div class="gmail_extra">During the cloning I saw these kind of events</div><div class="gmail_extra"><br></div><div class="gmail_extra"><div class="gmail_extra">Sep 28, 2017 10:31:30 AM VM vmclone1 creation was initiated by admin@internal-authz.</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span></div><div class="gmail_extra">Sep 28, 2017 11:16:38 AM VDSM command SetVolumeDescriptionVDS failed: Message timeout which can be caused by communication issues</div><div class="gmail_extra"><br></div><div class="gmail_extra">Sep 28, 2017 11:19:43 AM VDSM command SetVolumeDescriptionVDS failed: Message timeout which can be caused by communication issues<br></div></div></div></blockquote><div><br></div><div>This looks like timeout on vdsm side, you can find more info in vdsm log about these errors.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_extra"></div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span></div><div class="gmail_extra">Sep 28, 2017 11:19:43 AM Failed to update OVF disks 1504a878-4fe2-40df-a88f-6f073be0bd7b, 4ddac3ed-2bb9-485c-bf57-1750ac1fd761, OVF data isn't updated on those OVF stores (Data Center DC1, Storage Domain SDTEST).</div></div></div></blockquote><div><br></div><div>Same</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_extra"><span style="white-space:pre-wrap"> </span></div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span></div><div class="gmail_extra">At 11:24 I then start a pre-existing VM named benchvm and run a cpu / I/O benchmark (HammerDB with 13 concurrent users; the VM is configured with 12 vcpus (1:6:2) and 64Gb of ram; it is not the one I'm cloning) that runs from 11:40 to 12:02</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span></div><div class="gmail_extra">Sep 28, 2017 11:24:29 AM VM benchvm started on Host host1</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span></div><div class="gmail_extra">Sep 28, 2017 11:45:18 AM Host host1 is not responding. Host cannot be fenced automatically because power management for the host is disabled.</div></div></div></blockquote><div><br></div><div>Same</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_extra"><span style="white-space:pre-wrap"> </span></div><div class="gmail_extra">Sep 28, 2017 11:45:28 AM Failed to update OVF disks 1504a878-4fe2-40df-a88f-6f073be0bd7b, 4ddac3ed-2bb9-485c-bf57-1750ac1fd761, OVF data isn't updated on those OVF stores (Data Center DC1, Storage Domain SDTEST).</div></div></div></blockquote><div><br></div><div>Same</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_extra"><span style="white-space:pre-wrap"> </span></div><div class="gmail_extra">Sep 28, 2017 11:45:39 AM Status of host host1 was set to Up.</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span></div><div class="gmail_extra">Sep 28, 2017 12:12:31 PM VM vmclone1 creation has been completed.</div><div class="gmail_extra"><br></div><div class="gmail_extra">Any hint on the failures detected, both when only the cloning process was in place and when a bench was running inside a VM?</div></div></div></blockquote><div><br></div><div>I would check the host logs (vdsm and messages).</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_extra"><br></div><div class="gmail_extra">Thanks,</div><div class="gmail_extra">Gianluca</div></div></div>
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