June 2017 - Users - oVirt List Archives

oVirt split brain resolution
by Abi Askushi 27 Jun '17

27 Jun '17

Hi All, I have a 3 node ovirt 4.1 setup. I lost one node due to raid controller issues. Upon restoration I have the following split brain, although the hosts have mounted the storage domains: gluster volume heal engine info split-brain Brick gluster0:/gluster/engine/brick /e1c80750-b880-495e-9609-b8bc7760d101/ha_agent Status: Connected Number of entries in split-brain: 1 Brick gluster1:/gluster/engine/brick /e1c80750-b880-495e-9609-b8bc7760d101/ha_agent Status: Connected Number of entries in split-brain: 1 Brick gluster2:/gluster/engine/brick /e1c80750-b880-495e-9609-b8bc7760d101/ha_agent Status: Connected Number of entries in split-brain: 1 Hosted engine status gives the following: hosted-engine --vm-status Traceback (most recent call last): File "/usr/lib64/python2.7/runpy.py", line 162, in _run_module_as_main "__main__", fname, loader, pkg_name) File "/usr/lib64/python2.7/runpy.py", line 72, in _run_code exec code in run_globals File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_setup/vm_status.py", line 173, in <module> if not status_checker.print_status(): File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_setup/vm_status.py", line 103, in print_status all_host_stats = self._get_all_host_stats() File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_setup/vm_status.py", line 73, in _get_all_host_stats all_host_stats = ha_cli.get_all_host_stats() File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/client/client.py", line 160, in get_all_host_stats return self.get_all_stats(self.StatModes.HOST) File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/client/client.py", line 105, in get_all_stats stats = broker.get_stats_from_storage(service) File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py", line 233, in get_stats_from_storage result = self._checked_communicate(request) File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py", line 261, in _checked_communicate .format(message or response)) ovirt_hosted_engine_ha.lib.exceptions.RequestError: Request failed: failed to read metadata: [Errno 5] Input/output error: '/rhev/data-center/mnt/glusterSD/10.100.100.1: _engine/e1c80750-b880-495e-9609-b8bc7760d101/ha_agent/hosted-engine.metadata' Any idea on how to resolve this split brain? Thanx, Alex

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iSCSI storage domain and multipath when adding node
by Gianluca Cecchi 27 Jun '17

27 Jun '17

Hello, my configuration is what described here: http://lists.ovirt.org/pipermail/users/2017-March/080992.html So I'm using iSCSI multipath and not bonding can anyone reproduce? Initial situation is only one node configured and active with some VMS I go and configure a second node; it tries to activate but networks are not all already mapped and so gies to non operational. I setup all networks and activate the node It happens that: - on the first node where I currently have 2 iSCSI connections and 2multipath lines (with p1p1.100 and p1p2) it is instantiated a new iSCSI SID using interface "default" and in multipath -l output I see now 3 lines - on the newly added node I only see 1 iSCSI SID using interface default My way to solve the situation was to go inside iscsi multipath section do nothing but save the same config brutally on first node iscsiadm -m session -u --> all iscsi sessions are closed after a while I see again the original 2 connections recovered, with correct interface names used - on second node iscsiadm -m session -u --> the only session is cloed nothing happens if I set to maintenance the node and then activate the node --> the 2 correct iscsi sessions are activated... Thanks Gianluca

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Re: [ovirt-users] oVirt Live USB3 question
by Lev Veyde 27 Jun '17

27 Jun '17

Hi Michael, I'm glad that I could help. Yes, while USB3 has an impressive interface (and thus potential) speed of up to 5 gbps (or over 600 MB/sec) the actual hardware normally provides speeds which for basic DOKs are even under USB 2.0 spec. in most cases (under 60 MB/sec.). However, as I also mentioned, it will only affect the time it takes to load, and from my experience with any decent DOK it's quite OK, you don't even have to invest into ultra-expensive and ultra-fast one, especially if you don't plan to "re-burn" the DOK very often. Thanks in advance, On Mon, Jun 26, 2017 at 8:05 PM, Michael McConachie < michael.mcconachie(a)hotmail.com> wrote: > Lev, > > > That's exactly what I thought; you hit all the points (including slow DOM > SATA I type performance vs. USB3 speeds). That's all I needed > clarification on, before running down the rabbit hole. > > > MM > > > > ------------------------------ > *From:* Lev Veyde <lveyde(a)redhat.com> > *Sent:* Monday, June 26, 2017 4:00 PM > *To:* Michael McConachie > *Cc:* users(a)ovirt.org > *Subject:* Re: [ovirt-users] oVirt Live USB3 question > > Hi Michael, > > oVirt-Live's basically functions as any other LiveCD, so no special > differences here. > Generally it means that necessary kernel/kernel modules/programs are > loaded into RAM, and access to the image is needed if e.g. one wants to run > some more programs. > All writes are done into RAM. > > Note however that since the whole CD isn't copied into RAM, so you still > need it to be accessible, e.g. have the USB DOK be inserted into the > computer. > > As you already mentioned the oVirt-Live is designed to work in a sandboxed > environment as far as the network is concerned. > It was never designed nor tested to work with i.e. external storages, as > in order to do so the network configuration will have to be modified. > > Regarding performance: we haven't tested it, but probably the oVirt-Live > may take a bit more time to load when compared to normal installation. > This is because USB DOKs are generally slower than SAS/SATA HDDs/SSDs. > Once loaded however the performance will be similar and in some cases even > greater, since all writes are done to the RAM. > The price of this is of course that once the system is rebooted for > whatever reason all data is lost. > > Hope it helped, > > On Sat, Jun 24, 2017 at 5:10 AM, Michael McConachie < > michael.mcconachie(a)hotmail.com> wrote: > >> Hi all, >> >> >> Potentially stupid question here. Sorry in advance if so. I have always >> built out full blown multi rack instances of oVirt, and RHEV for clients, >> but the following question has me wondering before I go digging and trying >> it out... >> >> >> I realize that the oVirtLive ISO is for demo purposes, sandboxing, and >> not production: I have a client, who is in need of a bootable AIO-based USB >> install with the caveat of being able to connect to the computer's HD and >> other external storage at that point (for the Storage and ISO domains that >> I'll create afterwards). This is because they have one BM to work with and >> they don't want the extra overhead using an SSD HD slot. They don't want to >> use a Sata DOM either if possible. >> >> In saying that, and concerning the oVirt LiveISO capabilities - I have >> two questions. >> >> >> - Does the AIO USB install load necessary runtimes into memory, similar >> to esxi bootable USBs and utilize the base hardware afterwards so that the >> rest of the operations are ran in memory, hitting the disk (USB in this >> case) like a normal OS load when needed for kernel calls, etc..?? >> >> - Are there a terrible performance costs if we stay with USB3 (which has >> a ridiculous theoretical speed in certain hardware matching situations)? >> >> >> Thanks in advance for anyone who might have already crossed this bridge >> and can provide insight. >> >> >> >> Michael J. McConachie | keys.fedoraproject.org | PubKey: 0x7BCD88F8 >> >> *NOTE: The information included and/or attached in this electronic mail >> transmission may contain confidential or privileged information and is >> intended solely for the addressee(s). Any unauthorized disclosure, >> reproduction, distribution or the taking of action in reliance on the **contents >> of the information are strictly prohibited. If you have received the >> message in error, please notify the sender by reply transmission and delete >> the message without copying, disclosing or forwarding.* >> >> _______________________________________________ >> Users mailing list >> Users(a)ovirt.org >> http://lists.ovirt.org/mailman/listinfo/users >> >> > > > -- > > Lev Veyde > > Software Engineer, RHCE | RHCVA | MCITP > > Red Hat Israel > > <https://www.redhat.com> > > lev(a)redhat.com | lveyde(a)redhat.com > <https://red.ht/sig> > TRIED. TESTED. TRUSTED. <https://redhat.com/trusted> > -- Lev Veyde Software Engineer, RHCE | RHCVA | MCITP Red Hat Israel <https://www.redhat.com> lev(a)redhat.com | lveyde(a)redhat.com <https://red.ht/sig> TRIED. TESTED. TRUSTED. <https://redhat.com/trusted>

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Access VM Console on a Smart Phone with User Permission
by Jerome Roque 27 Jun '17

27 Jun '17

Good day oVirt Users, I need some little help. I have a KVM and used oVirt for the management of VMs. What I want is that my client will log on to their account and access their virtual machine using their Smart phone. I tried to install mOvirt and yes can connect to the console of my machine, but it is only accessible for admin console. Tried to use web console, it downloaded console.vv but can't open it. By any chance could make this thing possible? Thank you, Jerome

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"Could not detect Guest Agent on VM"
by Sven Achtelik 27 Jun '17

27 Jun '17

--_000_BFAB40933B3367488CE6299BAF8592D1014E52D7B127SOCRATESasl_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi All, I have several Windows VMs (Server 2012, Server 2012 R2) running and the gu= est tools are installed. IF I go and check the Services in those VMs I can = also see the "Ovirt Guest Service" running and the "QEMU Guest Agent" runni= ng. Also there is Information about the VM show in the GUI, like installed = applications etc.. I've tried several Versions of the tools and even with t= he latest 4.1.5 I can't get that message to disappear. Am I doing something wrong ? How does this affect the Backup-API and possible Snapshots are taken for Ba= ckups ? If you have any hints please let me know. Thank you, Sven --_000_BFAB40933B3367488CE6299BAF8592D1014E52D7B127SOCRATESasl_ 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=3DGenerator content=3D"Micros= oft Word 15 (filtered medium)"><style></style></head><body lang=3DDE link=3D"#0563C1" v= link=3D"#954F72"><div class=3DWordSection1>Hi All,<o:p= ></o:p><o:p> </o:p><= span lang=3DEN-US>I have several Windows VMs (Server 2012, Server 2012 R2) = running and the guest tools are installed. IF I go and check the Services i= n those VMs I can also see the “Ovirt Guest Service” running an= d the “QEMU Guest Agent” running. Also there is Information abo= ut the VM show in the GUI, like installed applications etc.. I’ve tri= ed several Versions of the tools and even with the latest 4.1.5 I can&#8217= ;t get that message to disappear.<o:p></o:p><o:p> </o:p>Am I doing something wrong ? <o:p></o:p><o:p> </o:p>How does this affect the Backup-API and possible Snap= shots are taken for Backups ? <o:p></o:p><s= pan lang=3DEN-US><o:p> </o:p>If you have any hints please let me know. <o:p></o:p><= p class=3DMsoNormal><o:p> </o:p>Thank you, <o:p></o:p><o:p> </o:p>Sven <o:p></o:p><o= :p> </o:p></div></body></html>= --_000_BFAB40933B3367488CE6299BAF8592D1014E52D7B127SOCRATESasl_--

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oVirt Live USB3 question
by Michael McConachie 26 Jun '17

26 Jun '17

--_000_DM5PR03MB263695A8C2F650880DC40D8B8CD90DM5PR03MB2636namp_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi all, Potentially stupid question here. Sorry in advance if so. I have always bu= ilt out full blown multi rack instances of oVirt, and RHEV for clients, but= the following question has me wondering before I go digging and trying it = out... I realize that the oVirtLive ISO is for demo purposes, sandboxing, and not = production: I have a client, who is in need of a bootable AIO-based USB ins= tall with the caveat of being able to connect to the computer's HD and othe= r external storage at that point (for the Storage and ISO domains that I'll= create afterwards). This is because they have one BM to work with and the= y don't want the extra overhead using an SSD HD slot. They don't want to us= e a Sata DOM either if possible. In saying that, and concerning the oVirt LiveISO capabilities - I have two = questions. - Does the AIO USB install load necessary runtimes into memory, similar to = esxi bootable USBs and utilize the base hardware afterwards so that the res= t of the operations are ran in memory, hitting the disk (USB in this case) = like a normal OS load when needed for kernel calls, etc..?? - Are there a terrible performance costs if we stay with USB3 (which has a = ridiculous theoretical speed in certain hardware matching situations)? Thanks in advance for anyone who might have already crossed this bridge and= can provide insight. Michael J. McConachie | keys.fedoraproject.org | PubKey: 0x7BCD88F8 NOTE: The information included and/or attached in this electronic mail tran= smission may contain confidential or privileged information and is intended= solely for the addressee(s). Any unauthorized disclosure, reproduction, di= stribution or the taking of action in reliance on the contents of the infor= mation are strictly prohibited. If you have received the message in error, = please notify the sender by reply transmission and delete the message witho= ut copying, disclosing or forwarding. --_000_DM5PR03MB263695A8C2F650880DC40D8B8CD90DM5PR03MB2636namp_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-= 1"> <style type=3D"text/css" style=3D"display:none;"></style> </head> <body dir=3D"ltr"> <div id=3D"divtagdefaultwrapper" style=3D"font-size:12pt;color:#000000;font= -family:'Courier New',monospace;" dir=3D"ltr"> Hi all, Potentially stupid question here. Sorry in advance if so.  I have a= lways built out full blown multi rack instances of oVirt, and RHEV for clie= nts, but the following question has me wondering before I go digging and tr= ying it out... I realize that the oVirtLive ISO is for demo purposes, sandboxing, and n= ot production: I have a client, who is in need of a bootable AIO-based USB = install with the caveat of being able to connect to the computer's HD and o= ther external storage at that point (for the Storage and ISO domains that I'll create afterwards).  This = is because they have one BM to work with and they don't want the extra= overhead using an SSD HD slot. They don't want to use a Sata DOM either if= possible. In saying that, and concerning the oVirt LiveISO capabilities -&nbs= p;I have two questions. - Does the AIO USB install load necessary runtimes into memory, similar = to esxi bootable USBs and utilize the base hardware afterwards so that the = rest of the operations are ran in memory, hitting the disk (USB in this cas= e) like a normal OS load when needed for kernel calls, etc..?? - Are there a terrible performance costs if we stay with USB3 (which has= a ridiculous theoretical speed in certain hardware matching situations)?</= p> Thanks in advance for anyone who might have already crossed this bridge = and can provide insight. <div id=3D"Signature"> <pre> Mic= hael J. McConachie | keys.fedoraproject.org <font= style=3D"" color=3D"#000000">| PubKey: 0x7BCD88F8 = </pre> NOTE: The information included and/or a= ttached in this electronic mail transmission may contain confidential or pr= ivileged information and is intended solely for the addressee(s). Any unaut= horized disclosure, reproduction, distribution or the taking of action in reliance on the contents of the information are strictly prohibited. If you = have received the message in error, please notify the sender by reply transmission and delete the message without copying, d= isclosing or forwarding. </div> </div> </body> </html> --_000_DM5PR03MB263695A8C2F650880DC40D8B8CD90DM5PR03MB2636namp_--

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Hot Memory add and Physical Memory guaranteed
by Luca 'remix_tj' Lorenzetto 26 Jun '17

26 Jun '17

Hello, i just tested the memory hot add to a vm. This vm had 2048 MB. I set the new memory to 2662 MB. I logged into the vm and i've seen that hasn't been any memory change, even if i said to the manager to apply memory expansion immediately. Memory shown by free -m is 1772 MB. Looking around i've found that that value was set in the option called "Physical Memory guaranteed". I tried setting this parameter to an higher value, but is still showing 1772, even if it says that "Memory" parameter will be changed immediately and minAllocatedMemory is changed at next boot. What is the right workflow to hot increase the ram of a vm? Luca -- "E' assurdo impiegare gli uomini di intelligenza eccellente per fare calcoli che potrebbero essere affidati a chiunque se si usassero delle macchine" Gottfried Wilhelm von Leibnitz, Filosofo e Matematico (1646-1716) "Internet è la più grande biblioteca del mondo. Ma il problema è che i libri sono tutti sparsi sul pavimento" John Allen Paulos, Matematico (1945-vivente) Luca 'remix_tj' Lorenzetto, http://www.remixtj.net , <lorenzetto.luca(a)gmail.com>

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Ovirt adding routes
by Alan Griffiths 26 Jun '17

26 Jun '17

Hi, When installing an ovirt host I got these routes automatically added default dev ovirtmgmt table 2886865805 scope link 172.18.19.128/26 via 172.18.19.141 dev ovirtmgmt table 2886865805 What is their intended purpose? It seems to be stopping packets from being correctly routed to the local gateway. Thanks, Alan

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import and old datadomain
by Ben De Luca 26 Jun '17

26 Jun '17

Hey, So, our DR plans included the idea of importing old domains. Is that meant to work now? -ben *very tired sysadmin*

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migrating VMS from old hosted engine to new hosted engine
by Paul Groeneweg | Pazion 26 Jun '17

26 Jun '17

We are moving our VMs from an old 3.6 oVirt platform to a new oVirt 4.1 platform. I am looking for an easy way to migrate the VMs. ( I know about export domain, but this takes 2 times a copy action ) I tested and just detaching the Data domain and attaching it, didn't work. Then I found the VM import option: - Adding a ssh key gen and setting password on virsh - load a list of machines in the webinterface from VM import - when I start an import the system complains: The following VMs retrieved from external server qemu+ssh://root@xxx.xxx.xxx.xxx/system are not in down status: VM [VM-NAME]. - I tried to suspend the VM, but this didn;t work either ( same error ) - Problem is ,when VM is shutdown, it disappears from this system list. Is there a way to directly import a VM from old oVirt platform to the new platform Looking forward to find a solution to quickly migrate our VMs. Best Regards, Paul Groeneweg

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