# SLES 12 SP3 on OPENSTACK CLOUD 7 **URL:** \ **Category:** SLES Virtualization\ **Created:** [December 12, 2017, 11:59pm UTC](https://forums.suse.com/t/sles-12-sp3-on-openstack-cloud-7/30664 "2017-12-12T23:59:54Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![ducle](https://avatars.discourse-cdn.com/v4/letter/d/82dd89/32.png) [@ducle](https://forums.suse.com/u/ducle)\ **Post date:** [December 12, 2017, 11:59pm UTC](https://forums.suse.com/t/sles-12-sp3-on-openstack-cloud-7/30664/1 "2017-12-12T23:59:54Z")
Hi guys, I have one case to ask. So, I have the OpenStack Cloud 7(SOC 7) up and running. One of the purpose is to provide VMs that people can use to do labs exercises. Currently, I have an instance on the cloud running SLES12 SP3 and i tried to install XEN hypervisor on top of that instance. After installation, the system ask to reboot to XEN kernel. I did reboot to the XEN kernel but it failed eventually. The instance shut down itself. So i tried to start it again and booted to XEN hypervisor kernel. Then the system hang forever at the step “A start job is running for dev-disk-by\x2duuid-ebdeead6\x2d…”. I have the screenshot. Can anyone tell me what is the problems? Are there any way to work around for that. Thanks alot. I am happy to give more details on the environment. ---
**Author:** ![smflood](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/smflood/32/10576_2.png) [@smflood](https://forums.suse.com/u/smflood)\ **Post date:** [December 13, 2017, 1:17am UTC](https://forums.suse.com/t/sles-12-sp3-on-openstack-cloud-7/30664/2 "2017-12-13T01:17:25Z")
ducle Wrote in message: [color=blue] > I have one case to ask. So, I have the OpenStack Cloud 7(SOC 7) up and > running. One of the purpose is to provide VMs that people can use to do > labs exercises. Currently, I have an instance on the cloud running > SLES12 SP3 and i tried to install XEN hypervisor on top of that > instance. After installation, the system ask to reboot to XEN kernel. I > did reboot to the XEN kernel but it failed eventually. The instance shut > down itself. So i tried to start it again and booted to XEN hypervisor > kernel. Then the system hang forever at the step “A start job is running > for dev-disk-by\x2duuid-ebdeead6\x2d…”. I have the screenshot. Can > anyone tell me what is the problems? Are there any way to work around > for that. Thanks alot. I am happy to give more details on the > environment.[/color] Firstly please note there is a forum dedicated to SUSE OpenStack Cloud at [https://forums.suse.com/forumdisplay.php?65-SUSE-OpenSta](https://forums.suse.com/forumdisplay.php?65-SUSE-OpenSta) ck-Cloud I’m not sure I’ve understood your post so can I check my interpretation - are you saying that your compute node is set up with the Xen hypervisor or that you have a guest running on your compute node in which you want to run Xen? Can you post the screenshot somewhere then link here? ## HTH. Simon Flood SUSE Knowledge Partner ----Android NewsGroup Reader---- [http://usenet.sinaapp.com/](http://usenet.sinaapp.com/) ---
**Author:** ![ducle](https://avatars.discourse-cdn.com/v4/letter/d/82dd89/32.png) [@ducle](https://forums.suse.com/u/ducle)\ **Post date:** [December 13, 2017, 3:44am UTC](https://forums.suse.com/t/sles-12-sp3-on-openstack-cloud-7/30664/3 "2017-12-13T03:44:25Z")
Hi, As I said, my OpenStack Cloud 7 is up and running and we are using our cloud to provide VMs for people to do lab exercises(related to virtualization technologies like KVM,XEN,LXC…). The case is that, I have an instance of SLES 12 SP3, which is running on OpenStack Cloud 7. And I try to install XEN hypervisor on that instance. After installing XEN, the system ask to reboot to XEN kernel. I did reboot to the XEN kernel but it failed eventually. The instance shut down itself. So i tried to start it again and booted to XEN hypervisor kernel. Then the system hang forever at the step “A start job is running for dev-disk-by\x2duuid-ebdeead6\x2d…”. So my case is related to both XEN hypervisor and also OpenStack Cloud 7. My OpenStack Cloud 7 is already up and running and it is using KVM as it compute services. Here is the screenshot on drive([https://drive.google.com/file/d/1vQS6YjwG0ikGuix-eA7HfSy6lDHdqqUs/view?usp=sharing](https://drive.google.com/file/d/1vQS6YjwG0ikGuix-eA7HfSy6lDHdqqUs/view?usp=sharing)). Thanks alot. ---
**Author:** ![thsundel](https://avatars.discourse-cdn.com/v4/letter/t/13edae/32.png) [@thsundel](https://forums.suse.com/u/thsundel)\ **Post date:** [December 13, 2017, 10:39am UTC](https://forums.suse.com/t/sles-12-sp3-on-openstack-cloud-7/30664/4 "2017-12-13T10:39:57Z")
[QUOTE=ducle;40545]Hi, As I said, my OpenStack Cloud 7 is up and running and we are using our cloud to provide VMs for people to do lab exercises(related to virtualization technologies like KVM,XEN,LXC…). The case is that, I have an instance of SLES 12 SP3, which is running on OpenStack Cloud 7. And I try to install XEN hypervisor on that instance. After installing XEN, the system ask to reboot to XEN kernel. I did reboot to the XEN kernel but it failed eventually. The instance shut down itself. So i tried to start it again and booted to XEN hypervisor kernel. Then the system hang forever at the step “A start job is running for dev-disk-by\x2duuid-ebdeead6\x2d…”. So my case is related to both XEN hypervisor and also OpenStack Cloud 7. My OpenStack Cloud 7 is already up and running and it is using KVM as it compute services. Here is the screenshot on drive([https://drive.google.com/file/d/1vQS6YjwG0ikGuix-eA7HfSy6lDHdqqUs/view?usp=sharing](https://drive.google.com/file/d/1vQS6YjwG0ikGuix-eA7HfSy6lDHdqqUs/view?usp=sharing)). Thanks alot.[/QUOTE] I have not tried nested virtualization but you might need to do some extra steps to get it working: [https://docs.openstack.org/devstack/latest/guides/devstack-with-nested-kvm.html](https://docs.openstack.org/devstack/latest/guides/devstack-with-nested-kvm.html) or [https://www.server-world.info/en/note?os=SUSE\_Linux\_Enterprise\_12&p=kvm&f=8](https://www.server-world.info/en/note?os=SUSE_Linux_Enterprise_12&p=kvm&f=8) Thomas ---
**Author:** ![ducle](https://avatars.discourse-cdn.com/v4/letter/d/82dd89/32.png) [@ducle](https://forums.suse.com/u/ducle)\ **Post date:** [December 13, 2017, 11:44am UTC](https://forums.suse.com/t/sles-12-sp3-on-openstack-cloud-7/30664/5 "2017-12-13T11:44:26Z")
[QUOTE=thsundel;40546]I have not tried nested virtualization but you might need to do some extra steps to get it working: [https://docs.openstack.org/devstack/latest/guides/devstack-with-nested-kvm.html](https://docs.openstack.org/devstack/latest/guides/devstack-with-nested-kvm.html) or [https://www.server-world.info/en/note?os=SUSE\_Linux\_Enterprise\_12&p=kvm&f=8](https://www.server-world.info/en/note?os=SUSE_Linux_Enterprise_12&p=kvm&f=8) Thomas[/QUOTE] Hi Thomas, I have already enable nested virtualization feature on OpenStack. As a proof, I have already tried doing same thing with KVM and LXC and they worked perfectly. ---
**Author:** ![thsundel](https://avatars.discourse-cdn.com/v4/letter/t/13edae/32.png) [@thsundel](https://forums.suse.com/u/thsundel)\ **Post date:** [December 14, 2017, 4:58pm UTC](https://forums.suse.com/t/sles-12-sp3-on-openstack-cloud-7/30664/6 "2017-12-14T16:58:53Z")
[QUOTE=ducle;40547]Hi Thomas, I have already enable nested virtualization feature on OpenStack. As a proof, I have already tried doing same thing with KVM and LXC and they worked perfectly.[/QUOTE] Looks somewhat similar to this: [https://www.novell.com/support/kb/doc.php?id=7015462](https://www.novell.com/support/kb/doc.php?id=7015462) take a look and see if multipath is enabled and if so try disable it. Thomas ---
**Author:** ![ducle](https://avatars.discourse-cdn.com/v4/letter/d/82dd89/32.png) [@ducle](https://forums.suse.com/u/ducle)\ **Post date:** [December 15, 2017, 12:59am UTC](https://forums.suse.com/t/sles-12-sp3-on-openstack-cloud-7/30664/7 "2017-12-15T00:59:48Z")
[QUOTE=thsundel;40579]Looks somewhat similar to this: [https://www.novell.com/support/kb/doc.php?id=7015462](https://www.novell.com/support/kb/doc.php?id=7015462) take a look and see if multipath is enabled and if so try disable it. Thomas[/QUOTE] Hi, Thomas My SLES12 is an instance on cloud with attached with only 1 volume so there is nothing to do with MPIO or multipath. Do you any more ideas? Btw, @smflood what do you think?