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Gluster Replica 3 using arbiter node?
by Adrian Lewis 16 Aug '15

16 Aug '15

Hi, Just wondering if it will be possible to create gluster replica 3 volumes in oVirt 3.6 that use the arbiter function instead of actually storing three copies of the data? If so, could this be used for the hosted engine on gluster feature which from what I can tell requires replica 3? Many thanks, Adrian

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vgs and lvs return empty list
by like.ma＠cs2c.com.cn 16 Aug '15

16 Aug '15

This is a multi-part message in MIME format. ------=_001_NextPart835358688211_=---- Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: base64 SGksIGFsbA0KDQpJIGhhdmUgYSBvVmlydDMuNCBlbnZpcm9ubWVudC4gSSBjcmVhdGUgYSBGQyBz dG9yYWdlIGRvbWFpbiBhbmQgYSBkaXNrIG9uIHRoaXMgRkMgc3RvcmFnZSBkb21haW4uIEV2ZXJ5 dGhpbmcgd29ya3Mgd2VsbC4gQnV0IGkgaGF2ZSBhIHF1ZXN0aW9uOg0KV2hlbiBpIGxvZ2luIHRo ZSB2ZHNtIGhvc3QsIGFuZCB1c2UgdGhlIHZncy9sdnMgY29tbWFuZCB0byBzaG93IHRoZSB2ZyB3 aGljaCByZXByZXNlbnQgRkMgc3RvcmFnZSBkb21haW4gYW5kIHRoZSBsdiB3aGljaCByZXByZXNl bnQgdGhlIGRpc2sgb24gdGhlIEZDIHN0b3JhZ2UgZG9tYWluLCB0aGUgY29tbWFuZCByZXR1cmVu cyBlbXB0eSByZXN1bHQgbGlzdC4gSXQgc2VlbXMgbGlrZSB0aGVyZSBpcyBubyB2ZyBvciBsdiBh dCBhbGwuIEJ1dCBpZiBpIHVzZSB0aGUgbHZjaGFuZ2UgLWF5IDxsdiBwYXRoPiB0byBhY3RpdmF0 ZSB0aGUgbHYgb24gdGhlIGhvc3QsIHRoZW4gdGhlIHZncy9sdnMgY29tbWFuZCByZXR1cm5zIHRo ZSBleHBlY3RlZCB2Zy9sdiBsaXN0LiBJIHdhbnQgdG8ga25vdyB3aHkgaXQgaXMgbGlrZSB0aGlz PyBBZnRlciBhbGwsIGlmIGkgdXNlIHZnY3JlYXRlIGNvbW1hbmQgdG8gY3JlYXRlIGEgbmV3IHZn LCB0aGVuIGkgY2FuIHVzZSB2Z3MgY29tbWFuZCB0byBzaG93IHRoZSB2ZyBsaXN0IGltbWVkaWF0 ZWx5Lg0KDQpUaGFua3MsIGxvb2tpbmcgZm93YXJkIHRvIHlvdXIgcmVwbHkuDQoNCg0KDQpsaWtl Lm1hQGNzMmMuY29tLmNuDQo= ------=_001_NextPart835358688211_=---- Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html><head><meta http-equiv=3D"content-type" content=3D"text/html; charse= t=3Dus-ascii"><style>body { line-height: 1.5; }body { font-size: 10.5pt; f= ont-family: ????; color: rgb(0, 0, 0); line-height: 1.5; }</style></head><= body>=0A<div>Hi, all</div><div> </div><div>I have a oVirt3= .4 environment. I create a FC storage domain and a disk on this FC storage= domain. Everything works well. But i have a question:</div><div>When i lo= gin the vdsm host, and use the vgs/lvs command to show the vg which repres= ent FC storage domain and the lv which represent the disk on the FC storag= e domain, the command returens empty result list. It seems like there is n= o vg or lv at all. But if i use the lvchange -ay <lv path> to activa= te the lv on the host, then the vgs/lvs command returns the expected vg/lv= list. I want to know why it is like this? After all, if i use vgcreate co= mmand to create a new vg, then i can use vgs command to show the vg list i= mmediately.</div><div> </div><div>Thanks= , looking foward to your reply.</div>=0A<div> </div><hr style=3D= "width: 210px; height: 1px;" color=3D"#b5c4df" size=3D"1" align=3D"left">= =0A<div><div style=3D"MARGIN: 10px; FONT-FAMILY: verdana; FONT-SIZE:= 10pt"><div>like.ma(a)cs2c.com.cn</div></div></div>=0A</body></html> ------=_001_NextPart835358688211_=------

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CPU Threads Help!!!
by zhangjian2011 16 Aug '15

16 Aug '15

--------------020500020201060207010309 Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit Hi, Guys Recently I am investigating the Optimization Policy in Cluster and try to use “CPU Threads”. As the manual of description: ======== For example, a 24-core system with 2 threads per core (48 threads total) can run virtual machines with up to 48 cores each ======== My host CPU is i3-2120 CPU (2 cores 4 threads) So I think the expect result case is : 1. If the “Count Threads As Cores” *disable*, we can’t run virtual vm with above 2 vCPU 2. If the “Count Threads As Cores” *enable*, we can’t run virtual vm with above 4 vCPU Now the problem is about result case 1: 1. When I set “Count Threads As Cores” *disable*, I still can run virtual vm with 4 vCPU Can anyone help me to explain it ??? Regards, Jian --------------020500020201060207010309 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: 8bit <html> <head> <meta content="text/html; charset=UTF-8" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#FFFFFF"> Hi, Guys<o:p></o:p> Recently I am investigating the Optimization Policy in Cluster and try to use “CPU Threads”.<o:p></o:p> As the manual of description:<o:p></o:p> ========<o:p></o:p> For example, a 24-core<o:p></o:p> system with 2 threads per core (48<o:p></o:p> threads total) can run virtual machines with<o:p></o:p> up to 48 cores each<o:p></o:p> ========<o:p></o:p> <o:p> </o:p> My host CPU is<o:p></o:p> i3-2120 CPU (2 cores 4 threads)<o:p></o:p> <o:p> </o:p> So I think the expect result case is :<o:p></o:p> 1. If the “Count Threads As Cores” disable, we can’t run virtual vm with above 2 vCPU<o:p></o:p> 2. If the “Count Threads As Cores” enable, we can’t run virtual vm with above 4 vCPU<o:p></o:p> <o:p> </o:p> Now the problem is about result case 1:<o:p></o:p> 1. When I set “Count Threads As Cores” disable, I still can run virtual vm with 4 vCPU<o:p></o:p> <o:p> </o:p> Can anyone help me to explain it ??? Regards, Jian </body> </html> --------------020500020201060207010309--

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Stuck installing Neutron Appliance
by Alan Murrell 16 Aug '15

16 Aug '15

Hello. I am running oVirt 3.5.1. on a single server running Hosted Engine. I am running through <http://www.ovirt.org/Features/NeutronVirtualAppliance#Run_the_neutron_serve…> and am stuck on the section "Install a Host with the network provider". Specifically, I am stuck on Step 2, which is: 2. Install the host with the external network provider by clicking on the 'Network Provider' left tab I am not sure where to click. In my "Tree", I do have "External providers", but I already added my Neutrom Provider in the previous section, 'Configure Neutron network provider on ovirt-engine'. Is there somewhere else I need to add this, or because I am running a self-hosted engine, it ends up being the same thing? Also in this same section, Step 7 where I am to run 'ovs-vsctl add-port br-neutron neutron', I don't have this command ('ovs-vsctl' doesn't seem to be installed, which I believe is part of openVswtich). I didn't see any steps beforehand that would have installed openVswitch. Is there a step missing? Thanks! :-) Regards, Alan

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iSCSI question... LUNS->Targets balnk
by Alan Murrell 16 Aug '15

16 Aug '15

Hello, I am hoping someone here has had experience in setting up an iSCSI target using 'targetcli'. I followed the following guide: <http://www.certdepot.net/rhel7-configure-iscsi-target-initiator-persistentl…>. This is on my single host (with hosted engine currently running; I am using a seperate HDD for the iSCSI storage) The iSCSI initiator of my host, from it's information page in oVirt, is <iqn.1994-05.com.redhat:ba4cc8b3368e>, so I created an ACL with that name. Here is a result of the listing in the 'acls' directory for my IQN: --- START --- /iscsi/iqn.20...gt1/tpg1/acls> ls o- acls .............................................................. [ACLs: 1] o- iqn.1994-05.com.redhat:ba4cc8b3368e ...................... [Mapped LUNs: 1] | o- mapped_lun0 .................................... [lun0 block/block1 (rw)] --- END --- So it appears as though my host's initiator is mapped to my LUN 0. When I go in to oVirt and add iSCSI storage, the "Discover" finds my target, and I can even log in successfully, however when I click on the "LUNS->Targets" side tab, there are no LUNs listed, so I cannot add any iSCSI storage. Any ideas on why the LUN is not showing up? Thanks! :-) Regards, Alan

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Multiple Networks on Self Hosted Engine
by Brent Miles 16 Aug '15

16 Aug '15

I am trying to install RHEVM 3.5 Self Hosted Engine. I have multiple vlan interfaces on the host that I would also like to have available on the self hosted engine. I have eth0.305 and eth3.306 on the host that I would like to have available on RHEVM. During the hosted-engine setup I get the option to add only one of interfaces but not both and do not seem to be able to add a second network at any point during setup or after the engine vm is installed. Any advise on doing this?

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[Reports] Virtual machine Network usage statistics
by Lionel Caignec 16 Aug '15

16 Aug '15

Hi, i've recently installed ovirt-engine-report, and i've a little problem with reports about VM. All graphs from "Network inteface usage" for VM are empty. Is it some configuration to do to get this data? All data for cpu/memory are ok. -- Lionel

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Regarding meetup events
by Ashutosh Bhakare 15 Aug '15

15 Aug '15

Hello All, Happy to Share that we hosted 1st meetup in Aurangabad (MS) India. This meetup was schedule on 11th July 2015 @ 6 PM focusing on Introduction about the oVirt project. here are some links https://www.facebook.com/RedHatATP/posts/967562879955137?pnref=story http://www.meetup.com/Aurangabad-Ovirt-Meetup/events/223693898/ Will schedule 2nd meetup asap focusing on deployment of ovirt. Thanks. Ashutosh S.Bhakare RHCA-V, RHCI, JBCI

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Power Management for Nested VMs
by Amador Pahim 14 Aug '15

14 Aug '15

Hi, I'm used to have nested hypervisors for test/devel pourposes. The missing feature when using nested hypervisors is the Power Management device, keeping my env. useless to test HA, Cluster Policy with PM control and so on. This week I had contact with the Minyard's set of patches for qemu, currently in review, adding an ipmi device to qemu. Here a post with my first experiments: http://apahim.livejournal.com/2395.html Hope you guys enjoy. Feel free to comment or suggest improvements. Best, -- apahim

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vdsm keeps removing BOOTPROTO=dhcp from ifcfg-ovirtmgmt
by Jakub Niedermertl 14 Aug '15

14 Aug '15

Hi all, I'd like my ovirtmgmt bridge to fetch ip address from dhcp, but vdsm keeps removing 'BOOTPROTO=dhcp' from /etc/sysconfig/network-scripts/ifcfg-ovirtmgmt. I set the file as follows: DEVICE=ovirtmgmt TYPE=Bridge DELAY=0 STP=off ONBOOT=yes BOOTPROTO=dhcp MTU=1500 DEFROUTE=no NM_CONTROLLED=no IPV6INIT=no call 'sudo systemctl restart network' and ip address is successfully assigned. Then reboot the machine and ip address is not fetched and ifcfg-ovirtmgmt looks like this # Generated by VDSM version 4.17.0-1240.git487a19e.fc22 DEVICE=ovirtmgmt TYPE=Bridge DELAY=0 STP=off ONBOOT=yes MTU=1500 DEFROUTE=no NM_CONTROLLED=no IPV6INIT=no HOTPLUG=no Is there any way how to prevent vdsm from removing BOOTPROTO statement or make ovirtmgmt to work with dhcp? Environment: Host: runs in virt-manager vm, Fedora 22 vdsm: 4.17.0-1240.git487a19e.fc22 from http://resources.ovirt.org/pub/ovirt-3.6-pre/rpm/fc$releasever/ Thanks. Jakub

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