November 2015 - Users - oVirt List Archives

Changing gateway ping address
by Matteo 21 Mar '17

21 Mar '17

Hi all, I need to change the gateway ping address, the one used by hosted engine setup. Is ok to edit /etc/ovirt-hosted-engine/hosted-engine.conf on each node, update the gateway param with the new ip address and restart the agent&broker on each node? With a blind test seems ok, but need to understand if is the right procedure. Thanks, Matteo

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Dedicated NICs for gluster network
by Nicolas Ecarnot 22 Aug '16

22 Aug '16

Hello, [Here : oVirt 3.5.3, 3 x CentOS 7.0 hosts with replica-3 gluster SD on the hosts]. On the switchs, I have created a dedicated VLAN to isolate the glusterFS traffic, but I'm not using it yet. I was thinking of creating a dedicated IP for each node's gluster NIC, and a DNS record by the way ("my_nodes_name_GL"), but I fear using this hostname or this ip in oVirt GUI host network interface tab, leading oVirt think this is a different host. Not being sure this fear is clearly described, let's say : - On each node, I create a second ip+(dns record in the soa) used by gluster, plugged on the correct VLAN - in oVirt gui, in the host network setting tab, the interface will be seen, with its ip, but reverse-dns-related to a different hostname. Here, I fear oVirt might check this reverse DNS and declare this NIC belongs to another host. I would also prefer not use a reverse pointing to the name of the host management ip, as this is evil and I'm a good guy. On your side, how do you cope with a dedicated storage network in case of storage+compute mixed hosts? -- Nicolas ECARNOT

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oVirt-shell command to move a disk
by Nicolas Ecarnot 16 Aug '16

16 Aug '16

Hello, I'm confused because though I'm using ovirt-shell to script many actions every day, and even after a large bunch of reading and testing, I can not find the correct syntax to move (offline/available) disks between storage domains. May you help me please? (oVirt 3.4.4) -- Nicolas Ecarnot

4 10

One RHEV Virtual Machine does not Automatically Resume following Compellent SAN Controller Failover
by Duckworth, Douglas C 30 May '16

30 May '16

Hello -- Not sure if y'all can help with this issue we've been seeing with RHEV... On 11/13/2015, during Code Upgrade of Compellent SAN at our Disaster Recovery Site, we Failed Over to Secondary SAN Controller. Most Virtual Machines in our DR Cluster Resumed automatically after Pausing except VM "BADVM" on Host "BADHOST." In Engine.log you can see that BADVM was sent into "VM_PAUSED_EIO" state at 10:47:57: "VM BADVM has paused due to storage I/O problem." On this Red Hat Enterprise Virtualization Hypervisor 6.6 (20150512.0.el6ev) Host, two other VMs paused but then automatically resumed without System Administrator intervention... In our DR Cluster, 22 VMs also resumed automatically... None of these Guest VMs are engaged in high I/O as these are DR site VMs not currently doing anything. We sent this information to Dell. Their response: "The root cause may reside within your virtualization solution, not the parent OS (RHEV-Hypervisor disc) or Storage (Dell Compellent.)" We are doing this Failover again on Sunday November 29th so we would like to know how to mitigate this issue, given we have to manually resume paused VMs that don't resume automatically. Before we initiated SAN Controller Failover, all iSCSI paths to Targets were present on Host tulhv2p03. VM logs on Host show in /var/log/libvirt/qemu/badhost.log that Storage error was reported: block I/O error in device 'drive-virtio-disk0': Input/output error (5) block I/O error in device 'drive-virtio-disk0': Input/output error (5) block I/O error in device 'drive-virtio-disk0': Input/output error (5) block I/O error in device 'drive-virtio-disk0': Input/output error (5) All disks used by this Guest VM are provided by single Storage Domain COM_3TB4_DR with serial "270." In syslog we do see that all paths for that Storage Domain Failed: Nov 13 16:47:40 multipathd: 36000d310005caf000000000000000270: remaining active paths: 0 Though these recovered later: Nov 13 16:59:17 multipathd: 36000d310005caf000000000000000270: sdbg - tur checker reports path is up Nov 13 16:59:17 multipathd: 36000d310005caf000000000000000270: remaining active paths: 8 Does anyone have an idea of why the VM would fail to automatically resume if the iSCSI paths used by its Storage Domain recovered? Thanks Doug -- Thanks Douglas Charles Duckworth Unix Administrator Tulane University Technology Services 1555 Poydras Ave NOLA -- 70112 E: duckd(a)tulane.edu O: 504-988-9341 F: 504-988-8505

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3.6 upgrade issue
by Jon Archer 01 May '16

01 May '16

Hi all, Wonder if anyone can shed any light on an error i'm seeing while running engine-setup. If just upgraded the packages to the latest 3.6 ones today (from 3.5), run engine-setup, answered the questions, confirming install then get presented with: [ INFO ] Cleaning async tasks and compensations [ INFO ] Unlocking existing entities [ INFO ] Checking the Engine database consistency [ INFO ] Stage: Transaction setup [ INFO ] Stopping engine service [ INFO ] Stopping ovirt-fence-kdump-listener service [ INFO ] Stopping websocket-proxy service [ INFO ] Stage: Misc configuration [ INFO ] Stage: Package installation [ INFO ] Stage: Misc configuration [ ERROR ] Failed to execute stage 'Misc configuration': function getdwhhistorytimekeepingbyvarname(unknown) does not exist LINE 2: select * from GetDwhHistoryTimekeepingByVarName( ^ HINT: No function matches the given name and argument types. You might need to add explicit type casts. [ INFO ] Yum Performing yum transaction rollback [ INFO ] Stage: Clean up Log file is located at /var/log/ovirt-engine/setup/ovirt-engine-setup-20150929144137-7u5rhg.log [ INFO ] Generating answer file '/var/lib/ovirt-engine/setup/answers/20150929144215-setup.conf' [ INFO ] Stage: Pre-termination [ INFO ] Stage: Termination [ ERROR ] Execution of setup failed Any ideas, where to look to fix things? Thanks Jon

5 4

MAC spoofing for specific VMs
by Christopher Young 13 Mar '16

13 Mar '16

I'm working on some load-balancing solutions and they appear to require MAC spoofing. I did some searching and reading and as I understand it, you can disable the MAC spoofing protection through a few methods. I was wondering about the best manner to enable this for the VMs that require it and not across the board (if that is even possible). I'd like to just allow my load-balancer VMs to do what they need to, but keep the others untouched as a security mechanism. If anyone has any advice on the best method to handle this scenario, I would greatly appreciate it. It seems that this might turn into some type of feature request, though I'm not sure if this is something that has to be done at the Linux bridge level, the port level, or the VM level. Any explanations into that would also help in my education. Thanks, Chris

3 5

Highly Available in 3.6 and USB support
by jaumotte, styve 21 Feb '16

21 Feb '16

--_000_AM3PR02MB29653FCC03F78819A980A6A86070AM3PR02MB296eurprd_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi everybody, After testing some features on 3.5, we are planning to finaly go to 3.6. So= me problems still exist. A major problem still remain on the < Highly Available > option on vm wich = doesn't work. I had a cluster with 4 engines and a simple vm. When I start = a poweroff from the node where this vm is living, the node is shutting down= but my vm doesn't restart on another node of the cluster. The power managm= ent of all the node are correctly configure. The HA feature of then hosted-= engine is working well (except it is very long). Another problem consist of passing usb host device to the virtual machine. = We've got some specials usb keys for activating old application and we need= to attach this key to vm. At first, I try with standard usb mass storage k= ey to test this approach. I can't start virtual machine when I add usb devi= ce, I always have the message < The host ... did not satisfy internal filte= r HostDevice because it does not support host device passthrough >. Have an= y idea where I can find an HowTo to help me ? Tanks for your help, SJ --_000_AM3PR02MB29653FCC03F78819A980A6A86070AM3PR02MB296eurprd_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:= //www.w3.org/TR/REC-html40"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"= > <meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang=3D"FR" link=3D"#0563C1" vlink=3D"#954F72"> <div class=3D"WordSection1"> Hi everybody,<o:p></o:p> <o:p> </o:p> After testing some features on 3.5, we ar= e planning to finaly go to 3.6. Some problems still exist. <o:p></o:p> <o:p> </o:p> A major problem still remain on the &laqu= o; Highly Available » option on vm wich doesn’t work.= I had a cluster with 4 engines and a simple vm. When I start a poweroff fr= om the node where this vm is living, the node is shutting down but my vm does= n’t restart on another node of the cluster. The power managment of al= l the node are correctly configure. The HA feature of then hosted-engine is= working well (except it is very long).<o:p></o:p> <o:p> </o:p> Another problem consist of passing usb ho= st device to the virtual machine. We’ve got some specials usb keys fo= r activating old application and we need to attach this key to vm. At first, I try with standard usb mass storage key to test this= approach. I can’t start virtual machine when I add usb device, I alw= ays have the message « The host … did not satisfy internal= filter HostDevice because it does not support host device passthrough ». Have any idea where I can find an HowTo to help = me ?<o:p></o:p> <o:p> </o:p> Tanks for your help,<o:p></o:p></p= > <o:p> </o:p> SJ<o:p></o:p> <o:p> </o:p> </div> </body> </html> --_000_AM3PR02MB29653FCC03F78819A980A6A86070AM3PR02MB296eurprd_--

4 7

How to add faster NIC to oVirt cluser / host?
by Christophe TREFOIS 10 Jan '16

10 Jan '16

Dear all, I have currently a data center with two clusters and each cluster had 1 host. On one of the hosts, I now enabled 10 GbE NIC called p4p1. Currently everything is going over a 1 GbE NIC called em1 (ovirtmgmt). My question now is, how I could add my 10 GbE NIC to the setup for instance to use for transferring data during transmissions to export domain or to simply replace the 1 GbE? I prefer little downtime (eg only temp network loss), but a full downtime (shutting down) could be acceptable. Thank you for any pointers or starting points you could provide, Kind regards, — Christophe

3 8

python floppy in RunOnce mode
by Giulio Casella 07 Jan '16

07 Jan '16

Hi, I'm trying to boot a vm with non persistent floppy using python ovirt sdk (the "RunOnce" way in administrator portal), but guest OS can't see floppy drive. The ultimate goal is to deploy floppy with sysprep unattend.xml file for windows 7 pools of vm. Here is a snippet of code I use: ------------------------------------------------- myvm = api.vms.get(name="vmname") content="This is file content!" f=params.File(name="foobar.txt",content=content) fs=params.Files() fs.add_file(f) payload=params.Payload() payload.set_type("floppy") payload.set_files(fs) payloads=params.Payloads() payloads.add_payload(payload) thevm=params.VM() thevm.set_payloads(payloads) action=params.Action(vm=thevm) myvm.start(action=action) xml = ParseHelper.toXml(action) print xml ------------------------------------------------- As you can see, for debugging purpose, I print my xml action, and I get: ------------------------------------------------- <action> <vm> <payloads> <payload type="floppy"> <files> <file> <name>foobar.txt</name> <content>This is file content</content> </file> </files> </payload> </payloads> </vm> </action> ------------------------------------------------- in the admin portal I can see my vm in "RunOnce" state, but no floppy is present... In fact in the vm process command line (ps -ef | grep qemu-kvm | grep vmname) I can't see -drive option referring to floppy (I only see 2 "-drive" options, referring to vm system disk and to a correctly mounted cdrom ISO) What I'm doing wrong? (The engine is RHEV-M version 3.4.1-0.31.el6ev) Thanks in advance, Giulio

3 11

Delete disk references without deleting the disk
by Johan Kooijman 06 Jan '16

06 Jan '16

Hi all, I have about 100 old VM's in my cluster. They're powered down, ready for deletion. What I want to do is delete the VM's including disks without actually deleting the disk images from the storage array itself. Is that possible? At the end I want to be able to delete the storage domain (which then should not hold any data, as far as ovirt is concerned). Reason for this: it's a ZFS pool with dedup enabled, deleting the images one by one will kill the array with 100% iowa for some time. -- Met vriendelijke groeten / With kind regards, Johan Kooijman

4 9