- Users - oVirt List Archives

ISCSI question
by Michael Wagenknecht 02 Jun '14

02 Jun '14

Hi, what is the best way to logout a single ISCSI Path? I can't find a way in the GUI. Can I use the iscsiadm command (iscsiadm -u -T ... -p ...)? We use oVirt 3.3.2-1.el6. Best regards, Michael

2 1

sanlock + gluster recovery -- RFE
by Giuseppe Ragusa 02 Jun '14

02 Jun '14

--_27321994-845b-49b2-9a1d-a49b376f5af2_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi=2C > ----- Original Message ----- > > From: "Ted Miller" <tmiller at hcjb.org> > > To: "users" <users at ovirt.org> > > Sent: Tuesday=2C May 20=2C 2014 11:31:42 PM > > Subject: [ovirt-users] sanlock + gluster recovery -- RFE > >=20 > > As you are aware=2C there is an ongoing split-brain problem with runnin= g > > sanlock on replicated gluster storage. Personally=2C I believe that thi= s is > > the 5th time that I have been bitten by this sanlock+gluster problem. > >=20 > > I believe that the following are true (if not=2C my entire request is p= robably > > off base). > >=20 > >=20 > > * ovirt uses sanlock in such a way that when the sanlock storage is= on a > > replicated gluster file system=2C very small storage disruptions ca= n > > result in a gluster split-brain on the sanlock space >=20 > Although this is possible (at the moment) we are working hard to avoid it= . > The hardest part here is to ensure that the gluster volume is properly > configured. >=20 > The suggested configuration for a volume to be used with ovirt is: >=20 > Volume Name: (...) > Type: Replicate > Volume ID: (...) > Status: Started > Number of Bricks: 1 x 3 =3D 3 > Transport-type: tcp > Bricks: > (...three bricks...) > Options Reconfigured: > network.ping-timeout: 10 > cluster.quorum-type: auto >=20 > The two options ping-timeout and quorum-type are really important. >=20 > You would also need a build where this bug is fixed in order to avoid any > chance of a split-brain: >=20 > https://bugzilla.redhat.com/show_bug.cgi?id=3D1066996 It seems that the aforementioned bug is peculiar to 3-bricks setups. I understand that a 3-bricks setup can allow proper quorum formation withou= t resorting to "first-configured-brick-has-more-weight" convention used wit= h only 2 bricks and quorum "auto" (which makes one node "special"=2C so not= properly any-single-fault tolerant). But=2C since we are on ovirt-users=2C is there a similar suggested configur= ation for a 2-hosts setup oVirt+GlusterFS with oVirt-side power management = properly configured and tested-working? I mean a configuration where "any" host can go south and oVirt (through the= other one) fences it (forcibly powering it off with confirmation from IPMI= or similar) then restarts HA-marked vms that were running there=2C all the= while keeping the underlying GlusterFS-based storage domains responsive an= d readable/writeable (maybe apart from a lapse between detected other-node = unresposiveness and confirmed fencing)? Furthermore: is such a suggested configuration possible in a self-hosted-en= gine scenario? Regards=2C Giuseppe > > How did I get into this mess? > >=20 > > ... > >=20 > > What I would like to see in ovirt to help me (and others like me). Alte= rnates > > listed in order from most desirable (automatic) to least desirable (set= of > > commands to type=2C with lots of variables to figure out). >=20 > The real solution is to avoid the split-brain altogether. At the moment i= t > seems that using the suggested configurations and the bug fix we shouldn'= t > hit a split-brain. >=20 > > 1. automagic recovery > >=20 > > 2. recovery subcommand > >=20 > > 3. script > >=20 > > 4. commands >=20 > I think that the commands to resolve a split-brain should be documented. > I just started a page here: >=20 > http://www.ovirt.org/Gluster_Storage_Domain_Reference >=20 > Could you add your documentation there? Thanks! >=20 > --=20 > Federico = --_27321994-845b-49b2-9a1d-a49b376f5af2_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html> <head> <style></style></head> <body class=3D'hmmessage'><div dir=3D'ltr'>Hi=2C &gt=3B ----- Origin= al Message ----- &gt=3B &gt=3B From: "Ted Miller" &lt=3Btmiller at hcjb.= org&gt=3B &gt=3B &gt=3B To: "users" &lt=3Busers at ovirt.org&gt=3B &g= t=3B &gt=3B Sent: Tuesday=2C May 20=2C 2014 11:31:42 PM &gt=3B &gt=3B Su= bject: [ovirt-users] sanlock + gluster recovery -- RFE &gt=3B &gt=3B <br= >&gt=3B &gt=3B As you are aware=2C there is an ongoing split-brain problem = with running &gt=3B &gt=3B sanlock on replicated gluster storage. Person= ally=2C I believe that this is &gt=3B &gt=3B the 5th time that I have be= en bitten by this sanlock+gluster problem. &gt=3B &gt=3B &gt=3B &gt= =3B I believe that the following are true (if not=2C my entire request is p= robably &gt=3B &gt=3B off base). &gt=3B &gt=3B &gt=3B &gt=3B = &gt=3B &gt=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B * ovirt uses sanlock in such = a way that when the sanlock storage is on a &gt=3B &gt=3B&nbsp=3B&nbsp= =3B&nbsp=3B&nbsp=3B replicated gluster file system=2C very small storage di= sruptions can &gt=3B &gt=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B result in a = gluster split-brain on the sanlock space &gt=3B &gt=3B Although this= is possible (at the moment) we are working hard to avoid it. &gt=3B The= hardest part here is to ensure that the gluster volume is properly &gt= =3B configured. &gt=3B &gt=3B The suggested configuration for a volu= me to be used with ovirt is: &gt=3B &gt=3B Volume Name: (...) &gt= =3B Type: Replicate &gt=3B Volume ID: (...) &gt=3B Status: Started<br= >&gt=3B Number of Bricks: 1 x 3 =3D 3 &gt=3B Transport-type: tcp &gt= =3B Bricks: &gt=3B (...three bricks...) &gt=3B Options Reconfigured:<= br>&gt=3B network.ping-timeout: 10 &gt=3B cluster.quorum-type: auto &= gt=3B &gt=3B The two options ping-timeout and quorum-type are really im= portant. &gt=3B &gt=3B You would also need a build where this bug is= fixed in order to avoid any &gt=3B chance of a split-brain: &gt=3B <= br>&gt=3B https://bugzilla.redhat.com/show_bug.cgi?id=3D1066996 It s= eems that the aforementioned bug is peculiar to 3-bricks setups. I u= nderstand that a 3-bricks setup can allow proper quorum formation without r= esorting to "first-configured-brick-has-more-weight" convention used with o= nly 2 bricks and quorum "auto" (which makes one node "special"=2C so not pr= operly any-single-fault tolerant). But=2C since we are on ovirt-user= s=2C is there a similar suggested configuration for a 2-hosts setup oVirt+G= lusterFS with oVirt-side power management properly configured and tested-wo= rking? I mean a configuration where "any" host can go south and oVirt (t= hrough the other one) fences it (forcibly powering it off with confirmation= from IPMI or similar) then restarts HA-marked vms that were running there= =2C all the while keeping the underlying GlusterFS-based storage domains re= sponsive and readable/writeable (maybe apart from a lapse between detected = other-node unresposiveness and confirmed fencing)? Furthermore: is s= uch a suggested configuration possible in a self-hosted-engine scenario?<br= > Regards=2C Giuseppe &gt=3B &gt=3B How did I get into this me= ss? &gt=3B &gt=3B &gt=3B &gt=3B ... &gt=3B &gt=3B &gt=3B &gt= =3B What I would like to see in ovirt to help me (and others like me). Alte= rnates &gt=3B &gt=3B listed in order from most desirable (automatic) to = least desirable (set of &gt=3B &gt=3B commands to type=2C with lots of v= ariables to figure out). &gt=3B &gt=3B The real solution is to avoid= the split-brain altogether. At the moment it &gt=3B seems that using th= e suggested configurations and the bug fix we shouldn't &gt=3B hit a spl= it-brain. &gt=3B &gt=3B &gt=3B 1. automagic recovery &gt=3B &gt= =3B &gt=3B &gt=3B 2. recovery subcommand &gt=3B &gt=3B &gt=3B &g= t=3B 3. script &gt=3B &gt=3B &gt=3B &gt=3B 4. commands &gt=3B <br= >&gt=3B I think that the commands to resolve a split-brain should be docume= nted. &gt=3B I just started a page here: &gt=3B &gt=3B http://www= .ovirt.org/Gluster_Storage_Domain_Reference &gt=3B &gt=3B Could you = add your documentation there? Thanks! &gt=3B &gt=3B -- &gt=3B Fe= derico </div></body> </html>= --_27321994-845b-49b2-9a1d-a49b376f5af2_--

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Monitoring UI-Plugin -> Zabbix
by René Koch 02 Jun '14

02 Jun '14

Hi, As some of you might know I wrote a monitoring ui-plugin which displays the check results of a Nagios/Icinga monitoring solution in oVirt webadmin portal. For the next version I want to extend the functionality to also display check results of a Zabbix monitoring solution. I know that there are some people on this list who are experienced with Zabbix so I wanted to ask if there's someone who want's to help integrating Zabbix into this ui-plugin. I mostly need help understanding how Zabbix works and testing early versions (I just have a very small Zabbix monitoring environment) - fetching data from the Zabbix API and displaying it in the same way as Nagios data isn't a problem for me. So if you're willing to help please drop me an email. Thanks. -- Best Regards René Koch Senior Solution Architect ============================================ LIS-Linuxland GmbH Brünner Straße 163, A-1210 Vienna Phone: +43 1 236 91 60 Mobile: +43 660 / 512 21 31 E-Mail: rkoch(a)linuxland.at ============================================

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Create two Node Cluster
by ml ml 01 Jun '14

01 Jun '14

Hello List, i just installed 3.4. 1.) I created a DataCenter: ---------------------------------- Type: Shared Compatibility Versio: 3.4 Quota Mode: disabled 2.) i created the Cluster ---------------------------------- Compatibility Version: 3.4 Enable Virt Service: yes Enable Gluster Service: yes 3.) i added two hosts ----------------------------- - they are up and running How can i now add my volumes and bricks? I dont have the exspected "Volumes" Tab to add Bricks. If i go to "Storage" i can only add "Data / GlusterFS" with a path to mount glusterfs. I guess this is for already existing gluster shares? Does it not work like this on page 15,16,17? http://www.ovirt.org/images/5/59/Ovirt-fosdem2013-gluster.pdf Thanks, Mario

2 1

VM external-VM name was created by Non interactive use
by Nathanaël Blanchet 01 Jun '14

01 Jun '14

This is a multi-part message in MIME format. --------------080002020503070801070302 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Hello, I imported a vm as a template from the glance public repo included in ovirt 3.4. When creating a new VM ("azerty") based on this template, I run once with cloud-init. The first boot behaves normally and my vm "azerty" goes up. When trying to reboot, it always fails and I can't use it anymore. In addition, a new empty externel-azerty vm is created with the "external" prefix by a mysterious "non interactive user". When I delete it, it is automatically recreated unless I remove azerty. Can anybody explain? 2014-05-30 14:30:56,249 INFO [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler_Worker-63) [34c4344f] Correlation ID: 34c4344f, Job ID: ab2120a6-82e4-4312-a288-fa3e127cc9bc, Call Stack: null, Custom Event ID: -1, Message: VM external-azerty was created by Non interactive user. 2014-05-30 14:30:56,254 INFO [org.ovirt.engine.core.bll.AddVmFromScratcCommand] (DefaultQuartzScheduler_Worker-63) [34c4344f] Lock freed to object EngineLock [exclusiveLocks= key: external-azerty value: VM_NAME , sharedLocks= ] -- Nathanaël Blanchet Supervision réseau Pôle exploitation et maintenance Département des systèmes d'information 227 avenue Professeur-Jean-Louis-Viala 34193 MONTPELLIER CEDEX 5 Tél. 33 (0)4 67 54 84 55 Fax 33 (0)4 67 54 84 14 blanchet(a)abes.fr --------------080002020503070801070302 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit <html> <head> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> </head> <body bgcolor="#FFFFFF" text="#000000"> Hello, I imported a vm as a template from the glance public repo included in ovirt 3.4. When creating a new VM ("azerty") based on this template, I run once with cloud-init. The first boot behaves normally and my vm "azerty" goes up. When trying to reboot, it always fails and I can't use it anymore. In addition, a new empty externel-azerty vm is created with the "external" prefix by a mysterious "non interactive user". When I delete it, it is automatically recreated unless I remove azerty. Can anybody explain? 2014-05-30 14:30:56,249 INFO  [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler_Worker-63) [34c4344f] Correlation ID: 34c4344f, Job ID: ab2120a6-82e4-4312-a288-fa3e127cc9bc, Call Stack: null, Custom Event ID: -1, Message: VM external-azerty was created by Non interactive user. 2014-05-30 14:30:56,254 INFO  [org.ovirt.engine.core.bll.AddVmFromScratcCommand] (DefaultQuartzScheduler_Worker-63) [34c4344f] Lock freed to object EngineLock [exclusiveLocks= key: external-azerty value: VM_NAME , sharedLocks= ] <pre class="moz-signature" cols="72">-- Nathanaël Blanchet Supervision réseau Pôle exploitation et maintenance Département des systèmes d'information 227 avenue Professeur-Jean-Louis-Viala 34193 MONTPELLIER CEDEX 5 Tél. 33 (0)4 67 54 84 55 Fax 33 (0)4 67 54 84 14 <a class="moz-txt-link-abbreviated" href="mailto:blanchet@abes.fr">blanchet(a)abes.fr</a> </pre> </body> </html> --------------080002020503070801070302--

2 2

Updated infra procedures
by David Caro 01 Jun '14

01 Jun '14

This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --U722kKrEV8cwpVb925s6WdsXKgmcX5rfl Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi everyone! =46rom now on we want and to be able to give the best response possible t= o any issue, we want to start using trac to manage any request we get, so from = now on, please open a ticket in the trac [1] whenever you need something to get d= one, of course, if you ping us on irc we will still respond and if it's a critica= l issue or a very trivial one we might solve it on the fly, but for any normal in= fra issue please open a trac ticket. The wiki page has been updated with that information too (thanks eyal) [2= ] [1] https://fedorahosted.org/ovirt/newticket [2] http://www.ovirt.org/Category:Infrastructure#How_we_work Thanks! --=20 David Caro Red Hat S.L. Continuous Integration Engineer - EMEA ENG Virtualization R&D Email: dcaro(a)redhat.com Web: www.redhat.com RHT Global #: 82-62605 --U722kKrEV8cwpVb925s6WdsXKgmcX5rfl Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJTh3OCAAoJEEBxx+HSYmnD4hsIAJcuRYqhz8Zjr3lxvNab0hu1 UkDduaJ1B6oXC8yCFZlyVRHv7gq8majv7PR1hlgJh6pOU6e3Emmjk9j9DnT7Fpp/ CS5wm2a1Y6LG1mySk42Ipsbf3bAGr/sUpUuMJPtrD9xBg9E8swLY1uEHY4UrGKQI vCsMp1VxW9abOOaPxU2v+RHMKjYu4Dhh4WsPbT5kz0HMrjxNG87t9N/Z/N6zCUG1 XrtbZR1z3QMAb2ypTkgO2OtEdsUxmjgX+gyhAfGLwXg/mlzcIvaiX+LKXDlJl/6W 4lpI7UkICAPz9xSe9xp5kNXHmZcbcNuvfSKhxkWrMmLCj1DG0TvhnGFzBoVkl1w= =GBeG -----END PGP SIGNATURE----- --U722kKrEV8cwpVb925s6WdsXKgmcX5rfl--

2 1

oVirt Infiniband Support - Etherrnet vs Infiniband
by ml ml 01 Jun '14

01 Jun '14

Hello List, i am very new to ovirt. I am setting up a 2 Node Cluster with GlusterFS Sync Replication. I was about to buy a 2-Port Intel Gbit nic for each host which is about 150Eur each. However, for a little extra of 180Eur you get a 10GBit Infiniband - MCX311A-XCAT. I would like to have quick opinions on this. Should i pay a little more and then get 10MBit instead of 2GBit bonded? Thanks, michel

3 2

New Stats for oVirt Community
by Brian Proffitt 01 Jun '14

01 Jun '14

The folks at Bitergia have been working on improving the community metrics dashboard located at ovirt.org/stats. I was just notified that, per our request, metrics for a big asset in our community--the #ovirt IRC--have been added to the dashboard. Swing by the page and see who's active on IRC and in the rest of the oVirt community! Peace, Brian -- Brian Proffitt oVirt Community Manager Project Atomic Community Lead Open Source and Standards, Red Hat - http://community.redhat.com Phone: +1 574 383 9BKP IRC: bkp @ OFTC

1 0

Hot Plug RAM - on the roadmap?
by Christian Rebel 31 May '14

31 May '14

This is a multipart message in MIME format. ------=_NextPart_000_0048_01CF7CF9.EE76FCB0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hi all, According to the below Presentation "Hot Plug RAM" is now on the roadmap (see page 18) http://events.linuxfoundation.org/sites/events/files/slides/litke-lfcs-oVirt -Update-20140328.pdf Does anyone have a realistic Info in which Release it will be implemented. I hope to see it asap. Thanks in advance, Christian ------=_NextPart_000_0048_01CF7CF9.EE76FCB0 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-microsoft-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=3DGenerator content=3D"Microsoft Word 14 = (filtered medium)"><style></style></head><body lang=3DDE-AT link=3Dblue = vlink=3Dpurple><div class=3DWordSection1>Hi = all,<o:p></o:p><o:p> </o:p>According to the below Presentation = “Hot Plug RAM” is now on the roadmap (see page = 18)<o:p></o:p><a = href=3D"http://events.linuxfoundation.org/sites/events/files/slides/litke= -lfcs-oVirt-Update-20140328.pdf">http://events.linuxfoundation.org/sites/= events/files/slides/litke-lfcs-oVirt-Update-20140328.pdf</a> = <o:p></o:p><o:p> </o:p>Does anyone have a realistic Info = in which Release it will be implemented. I hope to see it = asap…<o:p></o:p><o:p> </o:p>Thanks in = advance,<o:p></o:p>Christian<o:p></o:p><o:p> </o:p></div></body></html> ------=_NextPart_000_0048_01CF7CF9.EE76FCB0--

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vm boots on gpxe instead of hardisk
by Nathanaël Blanchet 30 May '14

30 May '14

This is a multi-part message in MIME format. --------------000004000103090105000707 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Hi all, I created a vm from a glance fetched template and this vm always run into gpxe priority while it is ordered by harddisk in priority. When I run it once, hard disk is unvailaible because the default disk is no bootable. When making it bootable, it becomes ungreyed and harddisk is is priority but the vm continue to boot to the gpxe. I have to manually select cdrom or pxe in first boot, save, then move again hardidsk at the first place and that time the vm boot on hard disk. -- Nathanaël Blanchet Supervision réseau Pôle exploitation et maintenance Département des systèmes d'information 227 avenue Professeur-Jean-Louis-Viala 34193 MONTPELLIER CEDEX 5 Tél. 33 (0)4 67 54 84 55 Fax 33 (0)4 67 54 84 14 blanchet(a)abes.fr --------------000004000103090105000707 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit <html> <head> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> </head> <body bgcolor="#FFFFFF" text="#000000"> Hi all, I created a vm from a glance fetched template and this vm always run into gpxe priority while it is ordered by harddisk in priority. When I run it once, hard disk is unvailaible because the default disk is no bootable. When making it bootable, it becomes ungreyed and harddisk is is priority  but the vm continue to boot to the gpxe. I have to manually select cdrom or pxe in first boot, save, then move again hardidsk at the first place and that time the vm boot on hard disk.   <pre class="moz-signature" cols="72">-- Nathanaël Blanchet Supervision réseau Pôle exploitation et maintenance Département des systèmes d'information 227 avenue Professeur-Jean-Louis-Viala 34193 MONTPELLIER CEDEX 5 Tél. 33 (0)4 67 54 84 55 Fax 33 (0)4 67 54 84 14 <a class="moz-txt-link-abbreviated" href="mailto:blanchet@abes.fr">blanchet(a)abes.fr</a> </pre> </body> </html> --------------000004000103090105000707--

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