October 2017 - Users - oVirt List Archives

LVM structure
by Nicolas Ecarnot 05 Oct '17

05 Oct '17

Hello, I'm still coping with my qemu image corruption, and I'm following some Redhat guidelines that explains the way to go : - Start the VM - Identify the host - On this host, run the ps command to identify the disk image location : # ps ax|grep qemu-kvm|grep vm_name - Look for "-drive file=/rhev/data-center/00000001-0001-0001-0001-00000000033e/b72773dc-c99c-472a-9548-503c122baa0b/images/91bfb2b4-5194-4ab3-90c8-3c172959f712/e7174214-3c2b-4353-98fd-2e504de72c75" (YMMV) - Resolve this symbolic link # ls -la /rhev/data-center/00000001-0001-0001-0001-00000000033e/b72773dc-c99c-472a-9548-503c122baa0b/images/91bfb2b4-5194-4ab3-90c8-3c172959f712/e7174214-3c2b-4353-98fd-2e504de72c75 lrwxrwxrwx 1 vdsm kvm 78 3 oct. 2016 /rhev/data-center/00000001-0001-0001-0001-00000000033e/b72773dc-c99c-472a-9548-503c122baa0b/images/91bfb2b4-5194-4ab3-90c8-3c172959f712/e7174214-3c2b-4353-98fd-2e504de72c75 -> /dev/b72773dc-c99c-472a-9548-503c122baa0b/e7174214-3c2b-4353-98fd-2e504de72c75 - Shutdown the VM - On the SPM, activate the logical volume : # lvchange -ay /dev/b72773dc-c99c-472a-9548-503c122baa0b/e7174214-3c2b-4353-98fd-2e504de72c75 - Verify the state of the qemu image : # qemu-img check /dev/b72773dc-c99c-472a-9548-503c122baa0b/e7174214-3c2b-4353-98fd-2e504de72c75 - If needed, attempt a repair : # qemu-img check -r all /dev/... - In any case, deactivate the LV : # lvchange -an /dev/... I followed this steps tens of times, and finding the LV and activating it was obvious and successful. Since yesterday, I'm finding some VMs one which these steps are not working : I can identify the symbolic link, but the SPM neither the host are able to find the LV device, thus can not LV-activate it : # lvchange -ay /dev/de2fdaa0-6e09-4dd2-beeb-1812318eb893/ce13d349-151e-4631-b600-c42b82106a8d Failed to find logical volume "de2fdaa0-6e09-4dd2-beeb-1812318eb893/ce13d349-151e-4631-b600-c42b82106a8d" Either I need two more coffees, either I may be missing a step or something to check. Looking at the SPM /dev/disk/* structure, it looks like very sound (I can see my three storage domains dm-name-* series of links). As the VM can nicely be ran and stopped, does the host activates something more before being launched? -- Nicolas ECARNOT

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ovirt-node iso installs non-bootable OS
by Guillaume 05 Oct '17

05 Oct '17

----=_RainLoop_127_572554114.1507153165 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Hello,=0A=0AI'm new to ovirt, I try it for the first time.=0AI downloaded= the iso ovirt-node-ng-installer-ovirt-4.1-2017100406.iso (http://jenkins= .ovirt.org/job/ovirt-node-ng_ovirt-4.1_build-artifacts-el7-x86_64/lastSuc= cessfulBuild/artifact/exported-artifacts/ovirt-node-ng-installer-ovirt-4.= 1-2017100406.iso)=0A=0AI installed it twice, but each time I have the sam= e problem.=0AWhen I reboot the PC after the install I can't start the OS,= I have the following error:=0A=0AFailed to open EFIcentosgrubx64.efi - N= ot Found=0AFailed to load image EFIcentosgrubx64.efi: Not Found=0Astart_i= mage() returned Not Found=0A=0AAm I the only one to have this error ?=0A= =0AIs there a way to solve this issue with the rescue iso choice ? or can= I download an older iso ?=0A=0AThanks,=0A=0AGuillaume ----=_RainLoop_127_572554114.1507153165 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable <!DOCTYPE html><html><head><meta http-equiv=3D"Content-Type" content=3D"t= ext/html; charset=3Dutf-8" /></head><body><div data-html-editor-font-wrap= per=3D"true" style=3D"font-family: arial, sans-serif; font-size: 13px;"><= div><div><div style=3D"font-family: arial, sans-serif;font-size: 13px">He= llo,<br><br>I'm new to ovirt, I try it for the first time.<br>I downloade= d the iso <a href=3D"http://jenkins.ovirt.org/job/ovirt-node-ng_ovirt-4.1= _build-artifacts-el7-x86_64/lastSuccessfulBuild/artifact/exported-artifac= ts/ovirt-node-ng-installer-ovirt-4.1-2017100406.iso">ovirt-node-ng-instal= ler-ovirt-4.1-2017100406.iso</a><br><br>I installed it twice, but each ti= me I have the same problem.<br>When I reboot the PC after the install I c= an't start the OS, I have the following error:<br><br>Failed to open \EFI= \centos\grubx64.efi - Not Found<br>Failed to load image \EFI\centos\grubx= 64.efi: Not Found<br>start_image() returned Not Found<br><br>Am I the onl= y one to have this error ?<br><br>Is there a way to solve this issue with= the rescue iso choice ? or can I download an older iso ?<br><br>Thanks,<= br><br>Guillaume<br><signature></signature> </div></div></div></div></bod= y></html> ----=_RainLoop_127_572554114.1507153165--

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Gluster Performance
by Bryan Sockel 05 Oct '17

05 Oct '17

Is there any performance loss from your if your gluster replica 3 servers are not all the same configuration? Server 1 - Primary 16 X 1.2 TB 10k Drives - Raid 10 - Stripe 256k (2.5 Drives) 1 CPU - Intel(R) Xeon(R) CPU E5-2609 v3 @ 1.90GHz 64 GB Memory Server 2 - Replica 8 X 6 TB 7.5 RPM Drives - Raid 10 - Trip 512 (3.5) 1 CPU - Intel(R) Xeon(R) CPU E5-2609 v3 @ 1.90GHz 16 GB Memory Server 3 - Arbiter (Also Virtual machine node) 2 X 1.2 TB 10k Drives Raid 10 2 CPU - Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz 192 GB Memory Thanks

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Organizing an event of oVirt in Myanmar
by Yan Naing Myint 05 Oct '17

05 Oct '17

Hello, We have planned an event named "The Tech Talk" on October 15, 2017. In the event we will mainly focus on - oVirt Virtualization - RAID & NFS - iSCSI In the event, we will use CentOS as main Linux distribution on which above mentioned services will be installed. The event is originally organized by Cyber Wings Co., Ltd here in Yangon, Myanmar. oVirt Myanmar Community is in association with them. Yet as a part of the event, I'm somehow promoting the oVirt alternatively. Here is the event page. https://www.facebook.com/events/120177198667868/? acontext=%7B%22ref%22%3A%2222%22%2C%22feed_story_type%22%3A% 2222%22%2C%22action_history%22%3A%22null%22%7D&pnref=story Agenda https://scontent.frgn1-1.fna.fbcdn.net/v/t1.0-9/22154155_1572685872788061_ 6765400324409071757_n.png?oh=83e2c9db6447296b6fde788b8634df57&oe=5A42295A Stickers printed here https://www.facebook.com/events/120177198667868/permalink/120228851996036/? ref=1&action_history=null Press Release in Myanmar Language describing about the event https://www.facebook.com/thevoicemyanmar.mm/posts/1635592309794355 We are hoping over 100 people will attend. Best, -- Yan Naing Myint CEO Server & Network Engineer Cyber Wings Co., Ltd http://cyberwings.asia 09799950510

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Ovirt causing strange network issues?
by Derek Atkins 05 Oct '17

05 Oct '17

Hi, I'm at my wits end so I'm tossing this here in the hopes that SOMEONE will be able to help me. tl;dr: Ovirt is doing something on my network that is causing my fiber modem to go from 3-5ms to 300-1000+ms round trip times. I know it's ovirt because when I unplug ovirt from my network the issue goes away; when I plug it back in, the issue recurs. Long version: I've been running Ovirt 4.0.6 happily on CentOS 7.3 for several months on a single host machine. Indeed, the host had an uptime of 200+ days and was working great until approximately midnight, September 21/22 (just over a week ago). I was on an airplane halfway across the Atlantic at that time, so it wasn't anything I did. My network is configured as: fiber modem <-> edgerouter <-> switch <-> everything else ovirt is living in the "everything else" area. When I sit with a laptop connected to either the everything else range or even directly connected to the fiber modem, I run 'mtr' and see network times (starting at the fiber modem) that bounce all over the place. When I unplug ovirt I see consistent 3-5ms times. Plug it back in, voom, back up to badness. I've spent several hours plugging and unplugging different devices trying to isolate the issue. The only "device" that has any effect is my ovirt box. I have tried to debug this in several ways, but really the only thing that seems to have helped at all is shutting down all the VMs and the hosted engine. Once nothing else is running (but the host itself), only then does the network seem to return to normal. I'm really at my wits end on this; I have no idea what is causing this or what might have changed to cause the issue right at that time. I also can't imagine what ovirt is doing over the network that could cause the modem, two physical hops away, to lose its mind in this way. But my experiementation is definitely showing a direct correlation. Help!! -derek -- Derek Atkins 617-623-3745 derek(a)ihtfp.com www.ihtfp.com Computer and Internet Security Consultant

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Question about cold start
by Chris Adams 04 Oct '17

04 Oct '17

I have an oVirt cluster that was hard shutdown last night (fire is bad, and firemen killed the generators for their safety). When it came back up, it did not start any VMs other than the hosted engine. Is that expected? I know this is not a normal use case, but is there a way to set VMs to start on cluster boot? -- Chris Adams <cma(a)cmadams.net>

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Re: [ovirt-users] Ovirt 4.0 and EL 7.4
by Sandro Bonazzola 04 Oct '17

04 Oct '17

Il 04 Ott 2017 15:51, "Alan Griffiths" <apgriffiths79(a)gmail.com> ha scritto: Hi, Is 4.0 supported/known to work on CentOS 7.4? I've just tried to upgrade one of the hosts in my lab from 7.3 to 7.4 and now vdsm-network fails to start with vdsm-tool: libvirt: XML-RPC error : authentication failed: authentication failed To even get this far I had to exclude gluster packages as 7.4 introduces 3.8 but ovirt 4.0 repo is still on 3.7. So, more generally. If I'm on ovirt 4.0, gluster 3.7 and EL 7.3. What is the best ordering for getting to ovirt 4.1 and EL 7.4? I would suggest to first upgrade to oVirt 4.1 and then complete the update to CentOS 7.4 Thanks, Alan _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users

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Re: [ovirt-users] How to import a qcow2 disk into ovirt
by Martín Follonier 04 Oct '17

04 Oct '17

Hi, I've done all the recommendations in this thread, and I'm still getting the "Paused by System" message just after the transfer starts. Honestly I don't know were else to look at, cause I don't find any log entry or packet capture that give me a hint about what is happening. I'll appreciate any help! Thank you in advance! Regards Martin On Thu, Sep 1, 2016 at 5:01 PM, Amit Aviram <aavi...(a)redhat.com> wrote: > You can do both, > Through the database, the table is "vdc_options". change "option_value" > where "option_name" = 'ImageProxyAddress' . > > On Thu, Sep 1, 2016 at 4:56 PM, Gianluca Cecchi <gianluca.cec...(a)gmail.com > > wrote: > >> On Thu, Sep 1, 2016 at 3:53 PM, Amit Aviram <aavi...(a)redhat.com> wrote: >> >>> You can just replace this value in the DB and change it to the right >>> FQDN, it is a config value named "ImageProxyAddress". replace "localhost" >>> with the right address (notice that the port is there too). >>> >>> If this will keep happen after users will have the latest version, we >>> will have to open a bug and fix whatever causes the URL to be "localhost". >>> >>> >> Do you mean through "engine-config" or directly into database? >> In this second case which is the table involved? >> >> Gianluca >> > > [root@ractorshe bin]# systemctl stop ovirt-imageio-proxy engine=# select * from vdc_options where option_name='ImageProxyAddress'; option_id | option_name | option_value | version -----------+-------------------+-----------------+--------- 950 | ImageProxyAddress | localhost:54323 | general (1 row) engine=# update vdc_options set option_value='ractorshe.mydomain:54323' where option_name='ImageProxyAddress'; UPDATE 1 engine=# select * from vdc_options where option_name='ImageProxyAddress'; option_id | option_name | option_value | version -----------+-------------------+--------------------------------------+--------- 950 | ImageProxyAddress | ractorshe.mydomain:54323 | general (1 row) engine=# engine=# select * from vdc_options where option_name='ImageProxyAddress'; option_id | option_name | option_value | version -----------+-------------------+--------------------------------------+--------- 950 | ImageProxyAddress | ractorshe.mydomain:54323 | general (1 row) systemctl stop ovirt-engine (otherwise it remained localhost) systemctl start ovirt-engine systemctl start ovirt-imageio-proxy Now transfer is ok. I tried a qcow2 disck configured as 40Gb but containing about 1.6Gb of data. I'm going to connect it to a VM and see if all is ok also from a contents point of view. Gianluca _______________________________________________ Users mailing listUsers@ovirt.orghttp://lists.ovirt.org/mailman/listinfo/users

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oVirt blog screenshots: paging jmarks
by ovirt＠fateknollogee.com 04 Oct '17

04 Oct '17

https://www.ovirt.org/blog/2017/09/introducing-ovirt-4.2.0/ https://www.ovirt.org/blog/2017/10/introducing-high-performance-vms/ @jmarks : can you include the full resolution of your screenshots from those 2 blog posts? Those screenshots are hard to see any detail

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oVirt Hosted Engine Backup and Restore guide
by Alexander Vrublevskiy 03 Oct '17

03 Oct '17

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