- Users - oVirt List Archives

[Users] oVirt features survey - please participate!
by Dave Neary 17 Jan '13

17 Jan '13

Hi everyone, After the mammoth thread these past few days on what you would like to see next from oVirt, Itamar and I have put together a list of all of the features you requested and made a survey to help us understand a bit more which features are more important to you, and the way in which you use oVirt. https://www.surveymonkey.com/s/oVirtFeatures It will take you between 1 and 3 minutes to participate in this survey, and help prioritise efforts for the next version or two of oVirt. If you know of people who are oVirt users, but who are not on this mailing list, please feel free to forward this link on to them! Also, let me remind you that you can see first hand what is coming in the upcoming oVirt 3.2 release and talk to the people behind oVirt during the oVirt Workshop in NetApp HQ, Sunnyvale, California next week. Registration is still open for another day or so, and we have about 10 places still available. Sign up now! http://www.ovirt.org/NetApp_Workshop_January_2013 Regards, Dave. -- Dave Neary - Community Action and Impact Open Source and Standards, Red Hat - http://community.redhat.com Ph: +33 9 50 71 55 62 / Cell: +33 6 77 01 92 13

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[Users] Fail to connect to an iSCSI Eq. LUN
by Nicolas Ecarnot 17 Jan '13

17 Jan '13

Hi, As a beginner, I'm reading again and again, but I'm not sure of the best way to do : Through the oVirt web manager, I'm trying to create an iSCSI storage domain. On my Equalogic SAN, I've created a volume with no restriction access (for the time being). I have two hypervisors on which I'm quite sure my network config is good enough for now (two nics bonded for the management, and 2 nics bonded for the iscsi). Everything is pinging ok. Networking is not an issue. In the ovirt web manager, I try to create the very first storage domain, of iscsi type of course. I choose one of the node, then the iscsi discovery + login is working fine. I can see my Equalogic volume, I'm checking it, and saving with the OK button, and I get the following error : > "Error while executing action New SAN Storage Domain: Physical device > initialization failed. Check that the device is empty. Please remove > all files and partitions from the device." Not very interesting, but the node log file is more instructive : > Thread-2767::INFO::2013-01-16 > 13:35:57,064::logUtils::37::dispatcher::(wrapper) Run and protect: > createVG(vgname='7becc578-a94b-41f4-bbec-8df5fe9f46c0', > devlist=['364ed2ad5297bb022fd0ee5ba36ad91a0'], options=None) > > Thread-2767::DEBUG::2013-01-16 > 13:35:57,066::__init__::1249::Storage.Misc.excCmd::(_log) '/usr/bin/sudo > -n /sbin/lvm pvcreate --config " devices { preferred_names = > [\\"^/dev/mapper/\\"] ignore_suspended_devices=1 write_cache_state=0 > disable_after_error_count=3 filter = [ > \\"a%3600508e000000000ec7b6d8dea602b0e|364ed2ad5297bb022fd0ee5ba36ad91a0%\\", > \\"r%.*%\\" ] } global { locking_type=1 prioritise_write_locks=1 > wait_for_locks=1 } backup { retain_min = 50 retain_days = 0 } " > --metadatasize 128m --metadatacopies 2 --metadataignore y > /dev/mapper/364ed2ad5297bb022fd0ee5ba36ad91a0' (cwd None) > > Thread-2767::DEBUG::2013-01-16 > 13:35:57,147::__init__::1249::Storage.Misc.excCmd::(_log) FAILED: <err> > = " Can't open /dev/mapper/364ed2ad5297bb022fd0ee5ba36ad91a0 > exclusively. Mounted filesystem?\n"; <rc> = 5 > > Thread-2767::DEBUG::2013-01-16 > 13:35:57,149::__init__::1249::Storage.Misc.excCmd::(_log) '/usr/bin/sudo > -n /sbin/lvm pvs --config " devices { preferred_names = > [\\"^/dev/mapper/\\"] ignore_suspended_devices=1 write_cache_state=0 > disable_after_error_count=3 filter = [ > \\"a%3600508e000000000ec7b6d8dea602b0e|364ed2ad5297bb022fd0ee5ba36ad91a0%\\", > \\"r%.*%\\" ] } global { locking_type=1 prioritise_write_locks=1 > wait_for_locks=1 } backup { retain_min = 50 retain_days = 0 } " -o > vg_name,pv_name --noheading > /dev/mapper/364ed2ad5297bb022fd0ee5ba36ad91a0' (cwd None) > > Thread-2767::DEBUG::2013-01-16 > 13:35:57,224::__init__::1249::Storage.Misc.excCmd::(_log) FAILED: <err> > = ' No physical volume label read from > /dev/mapper/364ed2ad5297bb022fd0ee5ba36ad91a0\n Failed to read physical > volume "/dev/mapper/364ed2ad5297bb022fd0ee5ba36ad91a0"\n'; <rc> = 5 > > Thread-2767::ERROR::2013-01-16 > 13:35:57,226::task::853::TaskManager.Task::(_setError) > Task=`1c5b8931-0085-489c-8962-ff5cc1323dc7`::Unexpected error > > Traceback (most recent call last): > File "/usr/share/vdsm/storage/task.py", line 861, in _run > File "/usr/share/vdsm/logUtils.py", line 38, in wrapper > File "/usr/share/vdsm/storage/hsm.py", line 1680, in createVG > File "/usr/share/vdsm/storage/lvm.py", line 788, in createVG > File "/usr/share/vdsm/storage/lvm.py", line 631, in _initpvs > PhysDevInitializationError: Failed to initialize physical device: > ("found: {} notFound: ('/dev/mapper/364ed2ad5297bb022fd0ee5ba36ad91a0',)",) I guess the interesting part is : > Can't open /dev/mapper/364ed2ad5297bb022fd0ee5ba36ad91a0 exclusively. Mounted filesystem? On any node, this partition is not mounted. But I have set up the access to this volume as "shared" on the Equalogic SAN, not knowing whether I should do so? I see both nodes connected on the same volume. I tried to remove this permit, but it didn't help. I also found Redhat answering such a question : > There are two ways to clear this error: > > - Remove VG from the Storage LUN using vgremove command. Run this command from one of the hypervisors. > - Clear the first 4K from the disk . Execute the following from one of the hypervisors: > > # dd if=/dev/zero of=/dev/mapper/diskname bs=4k count=1 I did try that, but with no luck. Now, two things : - Do I have to keep the access to this volume shared/allowed to all the hypervisors dedicated to this volume? - What is the problem with the pvcreate command? -- Nicolas Ecarnot

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[Users] Template restore
by Alex Leonhardt 17 Jan '13

17 Jan '13

Hi All, Am having some difficulties with restoring templates - basically, currently, I'm using each new HV (hyper-visor/node) as a separate DC, now, the first host has about 5 VM templates that I need to be able to restore to the 2nd HV I installed today - however - after detaching the export domain and re-attaching (finally) to the 2nd HV, I still am unable to import the templates into the 2nd HV (remember, separate data center) as it complains that the "system" - the overall ovirt-engine - already contains templates with the same ID, if I manually fake a different ID, it complains about the name, if I manually amend the name, it wont show at all ... :\ so - how can I make the templates available to the 2nd DC to create VMs from it (this is the end goal) ... on top of it - i dont think that when importing templates, you should have to make the name unique, especially since they currently seem DC dependent, so in a different DC they should be able to have the same name; and, when restoring Templates, the system should assign new IDs to the Templates imported, and only use the originals as a verification step if the target DC is the same as the src DC. Any help would be very appreciated. Ta! Alex -- | RHCE | Senior Systems Engineer | www.vcore.co | www.vsearchcloud.com |

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[Users] About ISOs
by Juan Jose 17 Jan '13

17 Jan '13

Hello everybody again, I have uploaded two isos to my ISO domain but I have had problems uploading one of they. How do I delete this iso from datacenter and system?, is there some utililty to do this, or some procedure? Many thanks in avanced, Juanjo.

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[Users] engine-iso-uploader problem
by Juan Jose 17 Jan '13

17 Jan '13

Hello everybody, I have soveld the problem downgrade "engine-iso-uploader" package. I hope It can be useful to someone with same problem: http://comments.gmane.org/gmane.comp.emulators.ovirt.user/4389 Many thanks, Juanjo.

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[Users] egine-iso-uploader error
by Juan Jose 17 Jan '13

17 Jan '13

Hello everybody, I have been able to solve my NFS problems and now I have configured ISO resource and a data resource in datacenter but when I try to execute the command "engine-iso-uploader" I can see below error: [root@ovirt-engine ~]# engine-iso-uploader -v list Please provide the REST API password for the admin@internal oVirt Engine user (CTRL+D to abort): ERROR: [ERROR]::ca_file (CA certificate) must be specified for SSL connection. INFO: Use the -h option to see usage. DEBUG: Configuration: DEBUG: command: list DEBUG: Traceback (most recent call last): DEBUG: File "/bin/engine-iso-uploader", line 931, in <module> DEBUG: isoup = ISOUploader(conf) DEBUG: File "/bin/engine-iso-uploader", line 331, in __init__ DEBUG: self.list_all_ISO_storage_domains() DEBUG: File "/bin/engine-iso-uploader", line 381, in list_all_ISO_storage_domains DEBUG: if not self._initialize_api(): DEBUG: File "/bin/engine-iso-uploader", line 358, in _initialize_api DEBUG: password=self.configuration.get("passwd")) DEBUG: File "/usr/lib/python2.7/site-packages/ovirtsdk/api.py", line 78, in __init__ DEBUG: debug=debug DEBUG: File "/usr/lib/python2.7/site-packages/ovirtsdk/infrastructure/connectionspool.py", line 47, in __init__ DEBUG: debug=debug)) DEBUG: File "/usr/lib/python2.7/site-packages/ovirtsdk/web/connection.py", line 38, in __init__ DEBUG: timeout=timeout) DEBUG: File "/usr/lib/python2.7/site-packages/ovirtsdk/web/connection.py", line 102, in __createConnection DEBUG: raise NoCertificatesError DEBUG: NoCertificatesError: [ERROR]::ca_file (CA certificate) must be specified for SSL connection. I have one Fedora 17 oVirt engine 3.1 installed with a Fedora 17 host. Someone can show me what is the problem and how is it solved, please? Many thanks in avanced, Juanjo.

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Re: [Users] node loses contact with rhev agent
by Vinzenz Feenstra 17 Jan '13

17 Jan '13

This is a multi-part message in MIME format. --------------020604000405040203010901 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hi Jonathan, Could you provide the logs for it? Thanks. On 01/04/2013 10:32 AM, Vinzenz Feenstra wrote: > Hi, > > On 01/03/2013 08:53 PM, Jonathan Horne wrote: >> i have 2 nodes now that have both lost contact with the rhev agents >> on guest VMs. if i migrate the guest to another node, the IP address >> and memory usage immediately show up. migrate a guest back, and the >> IP/memory info disappears. >> >> how can i troubleshoot what is causing this? > > It'd be nice if you could send me the logs from /var/log/vdsm/vdsm* > which are on the node where it looses the contact. I am currently > trying to find exactly the cause of such an issue as well and it would > be helpful if we could be provided with log files. Currently I am > still lacking them. > I will check them and let you know what I will be able to find. > > If you wouldn't mind I would be referring to you for more questions if > some will come up during the search for the cause and I will let you > know the results asap. >> >> thanks, >> jonathan >> > > -- > Regards, > > Vinzenz Feenstra | Senior Software Engineer > RedHat Engineering Virtualization R & D > Phone: +420 532 294 625 > IRC: vfeenstr or evilissimo > > Better technology. Faster innovation. Powered by community collaboration. > See how it works at redhat.com > > > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users -- Regards, Vinzenz Feenstra | Senior Software Engineer RedHat Engineering Virtualization R & D Phone: +420 532 294 625 IRC: vfeenstr or evilissimo Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com --------------020604000405040203010901 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit <html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> <div class="moz-cite-prefix">Hi Jonathan,<br> <br> Could you provide the logs for it?<br> Thanks.<br> <br> On 01/04/2013 10:32 AM, Vinzenz Feenstra wrote:<br> </div> <blockquote cite="mid:50E6A199.8050604@redhat.com" type="cite"> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> <div class="moz-cite-prefix">Hi,<br> <br> On 01/03/2013 08:53 PM, Jonathan Horne wrote:<br> </div> <blockquote cite="mid:9BE6F493F83A594DA60C45E6A09DC5AC01701E6C@AUSP01DAG0201.collaborationhost.net" type="cite"> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <div> <div> <div>i have 2 nodes now that have both lost contact with the rhev agents on guest VMs.  if i migrate the guest to another node, the IP address and memory usage immediately show up.  migrate a guest back, and the IP/memory info disappears.</div> <div><br> </div> <div>how can i troubleshoot what is causing this?</div> </div> </div> </blockquote> <br> It'd be nice if you could send me the logs from /var/log/vdsm/vdsm* which are on the node where it looses the contact. I am currently trying to find exactly the cause of such an issue as well and it would be helpful if we could be provided with log files. Currently I am still lacking them.<br> I will check them and let you know what I will be able to find.<br> <br> If you wouldn't mind I would be referring to you for more questions if some will come up during the search for the cause and I will let you know the results asap.<br> <blockquote cite="mid:9BE6F493F83A594DA60C45E6A09DC5AC01701E6C@AUSP01DAG0201.collaborationhost.net" type="cite"> <div> <div> <div><br> </div> <div>thanks,</div> <div>jonathan</div> <div> </div> </div> </div> <br> </blockquote> <br> <pre class="moz-signature" cols="72">-- Regards, Vinzenz Feenstra | Senior Software Engineer RedHat Engineering Virtualization R & D Phone: +420 532 294 625 IRC: vfeenstr or evilissimo Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com</pre> <br> <fieldset class="mimeAttachmentHeader"></fieldset> <br> <pre wrap="">_______________________________________________ Users mailing list <a class="moz-txt-link-abbreviated" href="mailto:Users@ovirt.org">Users(a)ovirt.org</a> <a class="moz-txt-link-freetext" href="http://lists.ovirt.org/mailman/listinfo/users">http://lists.ovirt.org/mailman/listinfo/users</a> </pre> </blockquote> <br> <br> <pre class="moz-signature" cols="72">-- Regards, Vinzenz Feenstra | Senior Software Engineer RedHat Engineering Virtualization R & D Phone: +420 532 294 625 IRC: vfeenstr or evilissimo Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com</pre> </body> </html> --------------020604000405040203010901--

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[Users] spm keeps on shifting between nodes continously
by Jithin Raju 17 Jan '13

17 Jan '13

Hi, I have 2 nodes of ovirt 3.1+ gluster. When i am trying to activate the Data center its changing to up then contend then back up continuously. Same way along with the above SPM status is shifting between the two nodes continously. With one node its working fine. Somebody has reported this before I remember, but do not remember the fix. engine log: 2013-01-15 15:50:41,762 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.HSMGetAllTasksInfoVDSCommand] (QuartzScheduler_Worker-66) [16c01e11] START, HSMGetAllTasksInfoVDSCommand(vdsId = 7caf739e-5ef7-11e2-aa89-525400927148), log id: 59dae374 2013-01-15 15:50:41,791 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.HSMGetAllTasksInfoVDSCommand] (QuartzScheduler_Worker-66) [16c01e11] FINISH, HSMGetAllTasksInfoVDSCommand, return: [], log id: 59dae374 2013-01-15 15:50:41,793 INFO [org.ovirt.engine.core.vdsbroker.irsbroker.SPMGetAllTasksInfoVDSCommand] (QuartzScheduler_Worker-66) [16c01e11] FINISH, SPMGetAllTasksInfoVDSCommand, return: [], log id: 77055e85 2013-01-15 15:50:41,795 INFO [org.ovirt.engine.core.bll.AsyncTaskManager] (QuartzScheduler_Worker-66) [16c01e11] AsyncTaskManager::AddStoragePoolExistingTasks: Discovered no tasks on Storage Pool DC 2013-01-15 15:50:41,796 INFO [org.ovirt.engine.core.vdsbroker.irsbroker.SPMGetAllTasksInfoVDSCommand] (QuartzScheduler_Worker-66) [16c01e11] START, SPMGetAllTasksInfoVDSCommand(storagePoolId = 1a995d7c-5ef3-11e2-a8c4-525400927148, ignoreFailoverLimit = false, compatabilityVersion = null), log id: 318b02c2 2013-01-15 15:50:41,798 INFO [org.ovirt.engine.core.vdsbroker.irsbroker.SPMGetAllTasksInfoVDSCommand] (QuartzScheduler_Worker-66) [16c01e11] -- SPMGetAllTasksInfoVDSCommand::ExecuteIrsBrokerCommand: Attempting on storage pool 1a995d7c-5ef3-11e2-a8c4-525400927148 2013-01-15 15:50:41,800 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.HSMGetAllTasksInfoVDSCommand] (QuartzScheduler_Worker-66) [16c01e11] START, HSMGetAllTasksInfoVDSCommand(vdsId = 7caf739e-5ef7-11e2-aa89-525400927148), log id: 22d29c5b 2013-01-15 15:50:41,832 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.HSMGetAllTasksInfoVDSCommand] (QuartzScheduler_Worker-66) [16c01e11] FINISH, HSMGetAllTasksInfoVDSCommand, return: [], log id: 22d29c5b 2013-01-15 15:50:41,836 INFO [org.ovirt.engine.core.vdsbroker.irsbroker.SPMGetAllTasksInfoVDSCommand] (QuartzScheduler_Worker-66) [16c01e11] FINISH, SPMGetAllTasksInfoVDSCommand, return: [], log id: 318b02c2 2013-01-15 15:50:41,841 INFO [org.ovirt.engine.core.bll.AsyncTaskManager] (QuartzScheduler_Worker-66) [16c01e11] AsyncTaskManager::AddStoragePoolExistingTasks: Discovered no tasks on Storage Pool DC 2013-01-15 15:50:51,830 ERROR [org.ovirt.engine.core.vdsbroker.irsbroker.GetStoragePoolInfoVDSCommand] (QuartzScheduler_Worker-44) irsBroker::BuildStorageDynamicFromXmlRpcStruct::Failed building Storage dynamic, xmlRpcStruct = org.ovirt.engine.core.vdsbroker.xmlrpc.XmlRpcStruct@7fdd2faf 2013-01-15 15:50:51,832 ERROR [org.ovirt.engine.core.vdsbroker.irsbroker.GetStoragePoolInfoVDSCommand] (QuartzScheduler_Worker-44) org.ovirt.engine.core.vdsbroker.irsbroker.IRSErrorException: IRSErrorException: 2013-01-15 15:50:51,833 ERROR [org.ovirt.engine.core.vdsbroker.irsbroker.IrsBrokerCommand] (QuartzScheduler_Worker-44) IrsBroker::Failed::GetStoragePoolInfoVDS due to: IRSErrorException: IRSErrorException: 2013-01-15 15:50:51,865 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.SpmStopVDSCommand] (QuartzScheduler_Worker-44) START, SpmStopVDSCommand(vdsId = 7caf739e-5ef7-11e2-aa89-525400927148, storagePoolId = 1a995d7c-5ef3-11e2-a8c4-525400927148), log id: 6c7ade5e 2013-01-15 15:50:51,899 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.SpmStopVDSCommand] (QuartzScheduler_Worker-44) SpmStopVDSCommand::Stopping SPM on vds blueberry, pool id 1a995d7c-5ef3-11e2-a8c4-525400927148 2013-01-15 15:50:53,032 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.SpmStopVDSCommand] (QuartzScheduler_Worker-44) FINISH, SpmStopVDSCommand, log id: 6c7ade5e 2013-01-15 15:50:53,036 INFO [org.ovirt.engine.core.vdsbroker.irsbroker.IrsBrokerCommand] (QuartzScheduler_Worker-44) Irs placed on server null failed. Proceed Failover 2013-01-15 15:50:53,046 INFO [org.ovirt.engine.core.bll.storage.SetStoragePoolStatusCommand] (QuartzScheduler_Worker-44) [3f11e766] Running command: SetStoragePoolStatusCommand internal: true. Entities affected : ID: 1a995d7c-5ef3-11e2-a8c4-525400927148 Type: StoragePool 2013-01-15 15:50:53,091 INFO [org.ovirt.engine.core.vdsbroker.irsbroker.IrsBrokerCommand] (QuartzScheduler_Worker-44) [3f11e766] hostFromVds::selectedVds - fig, spmStatus Free, storage pool DC 2013-01-15 15:50:53,097 INFO [org.ovirt.engine.core.vdsbroker.irsbroker.IrsBrokerCommand] (QuartzScheduler_Worker-44) [3f11e766] starting spm on vds fig, storage pool DC, prevId -1, LVER 27 2013-01-15 15:50:53,103 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.SpmStartVDSCommand] (QuartzScheduler_Worker-44) [3f11e766] START, SpmStartVDSCommand(vdsId = d199e4dc-5ef4-11e2-a538-525400927148, storagePoolId = 1a995d7c-5ef3-11e2-a8c4-525400927148, prevId=-1, prevLVER=27, storagePoolFormatType=V1, recoveryMode=Manual, SCSIFencing=false), log id: 64385c4b 2013-01-15 15:50:53,144 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.SpmStartVDSCommand] (QuartzScheduler_Worker-44) [3f11e766] spmStart polling started: taskId = 373b6b46-d79b-45a5-a534-3a18d38ac65e Thanks, Jithin

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[Users] windows 8 guest support
by Jithin Raju 17 Jan '13

17 Jan '13

Hi All, Windows 8 guest is supported in ovirt? Any plan since it has some issues with qemu sata support. Thanks, Jithin

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[Users] Nfs version 3 or 4 when mounting predefined engine ISO?
by Gianluca Cecchi 16 Jan '13

16 Jan '13

Hello, what should it be in 3.2 the version of NFS default ISO created on engine? Can I change it afterwards During engine setup I was only requested if I wanted it or not: (f18 with ovirt-nightly repo and 3.2.0-1.20130113.gitc954518) Configure NFS share on this server to be used as an ISO Domain? ['yes'| 'no'] [yes] : Local ISO domain path [/var/lib/exports/iso] : /ISO ok Current situation on engine regarding iptables [root@f18engine ~]# iptables -L -n Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 255 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:22 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:80 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:443 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW udp dpt:111 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:111 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW udp dpt:892 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:892 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW udp dpt:875 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:875 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW udp dpt:662 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:662 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:2049 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:32803 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW udp dpt:32769 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination ANd regarding nfs: [root@f18engine ~]# ps -ef|grep [n]fs root 1134 2 0 Jan15 ? 00:00:00 [nfsd4] root 1135 2 0 Jan15 ? 00:00:00 [nfsd4_callbacks] root 1136 2 0 Jan15 ? 00:00:00 [nfsd] root 1137 2 0 Jan15 ? 00:00:00 [nfsd] root 1138 2 0 Jan15 ? 00:00:00 [nfsd] root 1139 2 0 Jan15 ? 00:00:00 [nfsd] root 1140 2 0 Jan15 ? 00:00:00 [nfsd] root 1141 2 0 Jan15 ? 00:00:00 [nfsd] root 1142 2 0 Jan15 ? 00:00:00 [nfsd] root 1143 2 0 Jan15 ? 00:00:00 [nfsd] [root@f18engine ~]# systemctl status rpcbind.service rpcbind.service - RPC bind service Loaded: loaded (/usr/lib/systemd/system/rpcbind.service; enabled) Active: active (running) since Tue, 2013-01-15 13:38:46 CET; 1 day and 2h ago Process: 1098 ExecStart=/sbin/rpcbind -w ${RPCBIND_ARGS} (code=exited, status=0/SUCCESS) Main PID: 1128 (rpcbind) CGroup: name=systemd:/system/rpcbind.service └ 1128 /sbin/rpcbind -w Jan 15 13:38:46 f18engine.ceda.polimi.it systemd[1]: Started RPC bind service. When host tries to attach ISO it fails host is f18 with ovirt-nightly and vdsm-4.10.3-0.78.gitb005b54.fc18.x86_64 I noticed [root@f18ovn03 ]# ps -ef|grep mount root 1692 1 0 14:39 ? 00:00:00 /usr/sbin/rpc.mountd root 6616 2334 0 15:17 ? 00:00:00 /usr/bin/sudo -n /usr/bin/mount -t nfs -o soft,nosharecache,timeo=600,retrans=6,nfsvers=3 f18engine:/ISO /rhev/data-center/mnt/f18engine:_ISO root 6617 6616 0 15:17 ? 00:00:00 /usr/bin/mount -t nfs -o soft,nosharecache,timeo=600,retrans=6,nfsvers=3 f18engine:/ISO /rhev/data-center/mnt/f18engine:_ISO root 6618 6617 0 15:17 ? 00:00:00 /sbin/mount.nfs f18engine:/ISO /rhev/data-center/mnt/f18engine:_ISO -o rw,soft,nosharecache,timeo=600,retrans=6,nfsvers=3 root 6687 4147 0 15:17 pts/0 00:00:00 grep --color=auto mount The problem here is option nfsvers=3 in fact if I manually run on node [root@f18ovn03 ]# mount -t nfs -o nfsvers=4 f18engine:/ISO /p --> OK and [root@f18ovn03 ]# mount ... f18engine:/ISO on /p type nfs4 (rw,relatime,vers=4.0,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=10.4.4.59,local_lock=none,addr=10.4.4.60) while # mount -t nfs -o nfsvers=3 f18engine:/ISO /p --> KO stalled What should I change, engine or host or both? Thanks in advance, Gianluca

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