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<div dir="ltr" data-setdir="false">Hi Rajat,</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Thanks for the reply, I will try to do as you say later today and check those logs to see if I can find anything.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Regards,</div><div dir="ltr" data-setdir="false">Derek</div><div><br></div>
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On Tuesday 15 November 2022 at 05:58:23 GMT, Rajat Dhasmana <rdhasman@redhat.com> wrote:
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<div><div id="yiv0411032268"><div><div dir="ltr">Hi Derek,<div><br clear="none"></div><div>When you select the <span style="font-family:Helvetica, Arial, sans-serif;font-size:13px;">"Create new volume" in Horizon (assumption), there is a cinder volume created which contains the image (bootable) and the instance is backed by it.</span></div><div><span style="font-family:Helvetica, Arial, sans-serif;font-size:13px;">When you perform the snapshot creation operation on that instance, a cinder snapshot of that volume is created and a glance image is registered pointing to it.</span></div><div><span style="font-family:Helvetica, Arial, sans-serif;font-size:13px;"><br clear="none"></span></div><div><span style="font-family:Helvetica, Arial, sans-serif;font-size:13px;">Based on the scenario you described, the cinder snapshot operation seems to be failing. I would suggest you to check the following:</span></div><div><span style="font-family:Helvetica, Arial, sans-serif;font-size:13px;"><br clear="none"></span></div><div><span style="font-family:Helvetica, Arial, sans-serif;font-size:13px;">1) Which OpenStack version are you using? </span></div><div><span style="font-family:Helvetica, Arial, sans-serif;font-size:13px;">1) Which cinder backend are you using?</span></div><div><span style="font-family:Helvetica, Arial, sans-serif;font-size:13px;">2) Checking the nova logs and cinder logs (api, sch, vol) for any possible errors</span></div><div><span style="font-family:Helvetica, Arial, sans-serif;font-size:13px;">3) Try to create a cinder volume, attach it, and try to snapshot it (Note that we've removed the requirement of a force flag since xena so you will need to provide force=True if you're on a pre-xena version).</span></div><div><span style="font-family:Helvetica, Arial, sans-serif;font-size:13px;"><br clear="none"></span></div><div><span style="font-family:Helvetica, Arial, sans-serif;font-size:13px;">We've faced a recent issue related to snapshot create operation[1], maybe that's related.</span></div><div><span style="font-family:Helvetica, Arial, sans-serif;font-size:13px;"><br clear="none"></span></div><div><span style="font-family:Helvetica, Arial, sans-serif;font-size:13px;">[1] </span><a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://bugs.launchpad.net/python-cinderclient/+bug/1995883">https://bugs.launchpad.net/python-cinderclient/+bug/1995883</a></div><div><br clear="none"></div><div>-</div><div>Rajat Dhasmana</div><div><span style="font-family:Helvetica, Arial, sans-serif;font-size:13px;"><br clear="none"></span></div></div><br clear="none"><div id="yiv0411032268yqt57481" class="yiv0411032268yqt4076122976"><div class="yiv0411032268gmail_quote"><div dir="ltr" class="yiv0411032268gmail_attr">On Thu, Nov 10, 2022 at 3:46 PM Derek O keeffe <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:derekokeeffe85@yahoo.ie" target="_blank" href="mailto:derekokeeffe85@yahoo.ie">derekokeeffe85@yahoo.ie</a>> wrote:<br clear="none"></div><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex;" class="yiv0411032268gmail_quote"><div><div style="font-family:Helvetica, Arial, sans-serif;font-size:13px;"><div dir="ltr"><div><div>Hi all,</div><div><br clear="none"></div><div>When we create an instance and leave the "Create new volume" option as no then we can manage the instance with no issues (migrate, snapshot, etc..) These instances are saved locally on the compute nodes.</div><div><br clear="none"></div><div>When we create an instance and select "Create new volume" yes the instance is spun up fine on our backend storage with no obvious issues (reachable with ping & ssh. shutdown, restart, networking, etc.. all fine) however, when we try to snapshot it or migrate it it fails. We can however take volume snapshots of volumes that we have created and are stored on the same shared backend.</div><div><br clear="none"></div><div>Has anyone came across this or maybe a pointer as to what they may think is causing it? It sounds to us as if nova try's to create a snapshot of the VM but thinks it's a volume maybe?</div><div><br clear="none"></div><div>Any help greatly appreciated.</div><div><br clear="none"></div><div>Regards,</div><div>Derek</div></div><br clear="none"></div></div></div></blockquote></div></div>
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