April 2016 - Users - oVirt List Archives

VM get stuck randomly
by Christophe TREFOIS 16 Jun '16

16 Jun '16

Dear all, I have a problem since couple of weeks, where randomly 1 VM (not always the same) becomes completely unresponsive. We find this out because our Icinga server complains that host is down. Upon inspection, we find we can’t open a console to the VM, nor can we login. In oVirt engine, the VM looks like “up”. The only weird thing is that RAM usage shows 0% and CPU usage shows 100% or 75% depending on number of cores. The only way to recover is to force shutdown the VM via 2-times shutdown from the engine. Could you please help me to start debugging this? I can provide any logs, but I’m not sure which ones, because I couldn’t see anything with ERROR in the vdsm logs on the host. The host is running OS Version: RHEL - 7 - 1.1503.el7.centos.2.8 Kernel Version: 3.10.0 - 229.14.1.el7.x86_64 KVM Version: 2.1.2 - 23.el7_1.8.1 LIBVIRT Version: libvirt-1.2.8-16.el7_1.4 VDSM Version: vdsm-4.16.26-0.el7.centos SPICE Version: 0.12.4 - 9.el7_1.3 GlusterFS Version: glusterfs-3.7.5-1.el7 We use a locally exported gluster as storage domain (eg, storage is on the same machine exposed via gluster). No replica. We run around 50 VMs on that host. Thank you for your help in this, — Christophe

5 20

how to come back to the list of available vms in serial console
by Nathanaël Blanchet 02 Jun '16

02 Jun '16

Hello, I can sucessfully connect to the serial console prompt, then I choose the vm to login in. When logout of this vm, I'm stuck on the login banner of this vm, and I didn't find any way to come back to the menu, or any other way rather from closing the terminal tab to exit. Is there a way to do this? Thank you. -- Nathanaël Blanchet Supervision réseau Pôle Infrastrutures Informatiques 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

3 3

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

5 5

Cinder Snapshot Issues
by Kevin Hrpcek 25 May '16

25 May '16

Hello, I'm running into a problem with live snapshots not working when using cinder/ceph disks. There are different failures for including and not including memory, but in each case cinder/ceph creates a new snapshot that can be seen in cinder and ceph. When doing a memory/disk snapshot the VM ends up in a paused state and I need to kill -9 the qemu process to be able to boot the vm again. The engine seems to be losing connection with the vdsm process on the VM host after freezing the guest's filesystems. The guest never receives the thaw command and it fails in the logs. I am pasting in some log snippets. 2016-04-12 19:24:58,851 INFO [org.ovirt.engine.core.bll.CreateAllSnapshotsFromVmCommand] (org.ovirt.thread.pool-8-thread-27) [5c4493e] Ending command 'org.ovirt.engine.core.bll.CreateAllSnapshotsFromVmCommand' successfully. 2016-04-12 19:27:56,873 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler_Worker-27) [4d97ca06] Correlation ID: null, Call Stack: null, Custom Event ID: -1, Message: VDSM OVCL1A command failed: Message timeout which can be caused by communication issues 2016-04-12 19:27:56,873 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.SnapshotVDSCommand] (DefaultQuartzScheduler_Worker-27) [4d97ca06] Command 'org.ovirt.engine.core.vdsbroker.vdsbroker.SnapshotVDSCommand' return value 'StatusOnlyReturnForXmlRpc [status=StatusForXmlRpc [code=5022, message=Message timeout which can be caused by communication issues]]' 2016-04-12 19:27:56,874 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.SnapshotVDSCommand] (DefaultQuartzScheduler_Worker-27) [4d97ca06] HostName = OVCL1A 2016-04-12 19:27:56,874 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.SnapshotVDSCommand] (DefaultQuartzScheduler_Worker-27) [4d97ca06] Command 'SnapshotVDSCommand(HostName = OVCL1A, SnapshotVDSCommandParameters:{runAsync='true', hostId='9bdfaedc-34a8-4a08-ad8a-c117835a6094', vmId='040609f6-cfe0-4763-8b32-08ffad158c93'})' execution failed: VDSGenericException: VDSNetworkException: Message timeout which can be caused by communication issues 2016-04-12 19:27:56,875 WARN [org.ovirt.engine.core.vdsbroker.VdsManager] (org.ovirt.thread.pool-8-thread-16) [4d97ca06] Host 'OVCL1A' is not responding. Disk only live snapshots freeze the guest file systems, the vm receives the thaw command, but the VM is no longer responsive. The VM pings on the network but it is hung and it also needs a kill -9 to the qemu process so that it can be booted again. jsonrpc.Executor/0::DEBUG::2016-04-12 19:41:58,342::__init__::503::jsonrpc.JsonRpcServer::(_serveRequest) Calling 'VM.snapshot' in bridge with {u'frozen': True, u'vmID': u'040609f6-cfe0-4763-8b32-08ffad158c93', u'snapDrives': []} jsonrpc.Executor/0::INFO::2016-04-12 19:41:58,343::vm::3237::virt.vm::(snapshot) vmId=`040609f6-cfe0-4763-8b32-08ffad158c93`::<domainsnapshot> <disks/> </domainsnapshot> jsonrpc.Executor/0::ERROR::2016-04-12 19:41:58,346::vm::3252::virt.vm::(snapshot) vmId=`040609f6-cfe0-4763-8b32-08ffad158c93`::Unable to take snapshot Traceback (most recent call last): File "/usr/share/vdsm/virt/vm.py", line 3250, in snapshot self._dom.snapshotCreateXML(snapxml, snapFlags) File "/usr/share/vdsm/virt/virdomain.py", line 68, in f ret = attr(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/libvirtconnection.py", line 124, in wrapper ret = f(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 1313, in wrapper return func(inst, *args, **kwargs) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 2581, in snapshotCreateXML if ret is None:raise libvirtError('virDomainSnapshotCreateXML() failed', dom=self) libvirtError: unsupported configuration: nothing selected for snapshot jsonrpc.Executor/7::DEBUG::2016-04-12 19:41:58,391::__init__::503::jsonrpc.JsonRpcServer::(_serveRequest) Calling 'VM.thaw' in bridge with {u'vmID': u'040609f6-cfe0-4763-8b32-08ffad158c93'} jsonrpc.Executor/7::INFO::2016-04-12 19:41:58,391::vm::3041::virt.vm::(thaw) vmId=`040609f6-cfe0-4763-8b32-08ffad158c93`::Thawing guest filesystems jsonrpc.Executor/7::INFO::2016-04-12 19:41:58,396::vm::3056::virt.vm::(thaw) vmId=`040609f6-cfe0-4763-8b32-08ffad158c93`::6 guest filesystems thawed Everything else is working well with cinder for running VMs (making disks, running VMs, live migration, etc...). I was able to get live snapshots when using a CephFS Posix storage domain. Versions.. Ceph 9.2.0 oVirt Latest CentOS 7.2 Cinder 7.0.1-1.el7 Any help would be appreciated. Thanks, Kevin

2 4

editing VM settting
by Fabrice Bacchella 24 May '16

24 May '16

--Apple-Mail=_0D15CE0B-0FB7-4D4E-8899-589FA7FB4F4F Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii I'm trying to change the way a VM is booted, I want an initial setup = with kernel, initrd and cmdline given and later removed. Using the GUI it works fine. But I have no success using the python API. And running with debug = enable, I get this strange result : > PUT /api/vms/8ced0f81-03fd-415b-a8ef-60141de7eeca HTTP/1.1 ... > <os type=3D"rhel_7x64"> > <boot dev=3D"hd"/> > <boot dev=3D"network"/> > </os> ... < <os type=3D"rhel_7x64"> < <boot dev=3D"hd"/> < <boot dev=3D"network"/> < <kernel>.../vmlinuz</kernel> < <initrd>.../initrd.img</initrd> < <cmdline>....</cmdline> < </os> I got this with: os_params =3D params.OperatingSystem() os_params.set_boot(old_os_params.get_boot()) os_params.set_type(old_os_params.get_type()) os_params.set_kernel(None) os_params.set_initrd(None) os_params.set_cmdline(None) self.broker.set_os(os_params) self.broker.update() trying to set kernel and others to empty string is not really better: > <os type=3D"rhel_7x64"> > <boot dev=3D"hd"/> > <boot dev=3D"network"/> > <kernel></kernel> > <initrd></initrd> > <cmdline></cmdline> > </os> ... < <os type=3D"rhel_7x64"> < <boot dev=3D"hd"/> < <boot dev=3D"network"/> < <kernel></kernel> < <initrd></initrd> < <cmdline></cmdline> < </os> What kind of "magic values" the engine uses to removes values ? --Apple-Mail=_0D15CE0B-0FB7-4D4E-8899-589FA7FB4F4F Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html = charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" = class=3D"">I'm trying to change the way a VM is booted, I want an = initial setup with kernel, initrd and cmdline given and later = removed.<div class=3D""><br class=3D""></div><div class=3D"">Using the = GUI it works fine.</div><div class=3D""><br class=3D""></div><div = class=3D"">But I have no success using the python API. And running with = debug enable, I get this strange result :</div><div class=3D""><br = class=3D""></div><div class=3D""><div style=3D"margin: 0px; font-size: = 11px; font-family: Menlo;" class=3D"">> PUT = /api/vms/8ced0f81-03fd-415b-a8ef-60141de7eeca HTTP/1.1</div></div><div = class=3D"">...</div><div class=3D""><div style=3D"margin: 0px; = font-size: 11px; font-family: Menlo;" class=3D"">>     = <os type=3D"rhel_7x64"></div><div style=3D"margin: 0px; font-size: = 11px; font-family: Menlo;" class=3D"">>         = <boot dev=3D"hd"/></div><div style=3D"margin: 0px; font-size: = 11px; font-family: Menlo;" class=3D"">>         = <boot dev=3D"network"/></div><div style=3D"margin: 0px; font-size: = 11px; font-family: Menlo;" class=3D"">>     = </os></div></div><div class=3D"">...</div><div class=3D""><div = style=3D"margin: 0px; font-size: 11px; font-family: Menlo;" = class=3D""><     <os type=3D"rhel_7x64"></div><div = style=3D"margin: 0px; font-size: 11px; font-family: Menlo;" = class=3D""><         <boot = dev=3D"hd"/></div><div style=3D"margin: 0px; font-size: 11px; = font-family: Menlo;" class=3D""><         = <boot dev=3D"network"/></div><div style=3D"margin: 0px; font-size: = 11px; font-family: Menlo;" class=3D""><         = <kernel>.../vmlinuz</kernel></div><div style=3D"margin: 0px; = font-size: 11px; font-family: Menlo;" class=3D""><     =     <initrd>.../initrd.img</initrd></div><div = style=3D"margin: 0px; font-size: 11px; font-family: Menlo;" = class=3D""><         = <cmdline>....</cmdline></div><div style=3D"margin: 0px; = font-size: 11px; font-family: Menlo;" class=3D""><     = </os></div></div><div class=3D""><br class=3D""></div><div = class=3D"">I got this with:</div><div class=3D""><pre = style=3D"background-color: rgb(255, 255, 255); font-family: Menlo;" = class=3D"">os_params =3D params.OperatingSystem()<br = class=3D"">os_params.set_boot(old_os_params.get_boot())<br = class=3D"">os_params.set_type(old_os_params.get_type())<br = class=3D"">os_params.set_kernel(<span style=3D"color:#000080;" = class=3D"">None</span>)<br class=3D"">os_params.set_initrd(<span = style=3D"color:#000080;" class=3D"">None</span>)<br = class=3D"">os_params.set_cmdline(<span style=3D"color:#000080;" = class=3D"">None</span>)<br class=3D""><span style=3D"color:#94558d;" = class=3D"">self</span>.broker.set_os(os_params)<br class=3D""><span = style=3D"color:#94558d;" class=3D"">self</span>.broker.update()<br = class=3D""></pre><div class=3D"">trying to set kernel and others to = empty string is not really better:</div></div><div class=3D""><div = style=3D"margin: 0px; font-size: 11px; font-family: Menlo;" = class=3D"">>     <os type=3D"rhel_7x64"></div><div = style=3D"margin: 0px; font-size: 11px; font-family: Menlo;" = class=3D"">>         <boot = dev=3D"hd"/></div><div style=3D"margin: 0px; font-size: 11px; = font-family: Menlo;" class=3D"">>         = <boot dev=3D"network"/></div><div style=3D"margin: 0px; font-size: = 11px; font-family: Menlo;" class=3D"">>         = <kernel></kernel></div><div style=3D"margin: 0px; font-size: = 11px; font-family: Menlo;" class=3D"">>         = <initrd></initrd></div><div style=3D"margin: 0px; font-size: = 11px; font-family: Menlo;" class=3D"">>         = <cmdline></cmdline></div><div style=3D"margin: 0px; = font-size: 11px; font-family: Menlo;" class=3D"">>     = </os></div></div><div class=3D"">...</div><div class=3D""><div = style=3D"margin: 0px; font-size: 11px; font-family: Menlo;" = class=3D""><     <os type=3D"rhel_7x64"></div><div = style=3D"margin: 0px; font-size: 11px; font-family: Menlo;" = class=3D""><         <boot = dev=3D"hd"/></div><div style=3D"margin: 0px; font-size: 11px; = font-family: Menlo;" class=3D""><         = <boot dev=3D"network"/></div><div style=3D"margin: 0px; font-size: = 11px; font-family: Menlo;" class=3D""><         = <kernel></kernel></div><div style=3D"margin: 0px; font-size: = 11px; font-family: Menlo;" class=3D""><         = <initrd></initrd></div><div style=3D"margin: 0px; font-size: = 11px; font-family: Menlo;" class=3D""><         = <cmdline></cmdline></div><div style=3D"margin: 0px; = font-size: 11px; font-family: Menlo;" class=3D""><     = </os></div></div><div class=3D""><br class=3D""></div><div = class=3D"">What kind of "magic values" the engine uses to removes values = ?</div><div class=3D""><br class=3D""></div></body></html>= --Apple-Mail=_0D15CE0B-0FB7-4D4E-8899-589FA7FB4F4F--

3 3

Ovirt + OpenVSwitch
by Sverker Abrahamsson 24 May '16

24 May '16

Has anybody succeeded in installing Ovirt 3.6 with hosted engine on a server which uses OpenVSwitch for the network config? I believe my issue is that Ovirt wants to control the network to create a bridge for its management and I wants it to just use whatever network is available on the host without trying to be clever about it. I was able to tweak it to get to the final stage where it fails on waiting for the engine to start. Best regards Sverker

4 7

Errors while trying to join an external LDPA provider
by Alexis HAUSER 23 May '16

23 May '16

Hi, I'm using 3.6.3.4-1.el7.centos and I'm having troubles joining an LDAP provider. When I try to login into the new profile, I get a "general command validation failure" error. This is what I can get from ovirt-engine/engine.log : tail -n 400 /var/log/ovirt-engine/engine.log | grep -i error 2016-04-28 09:27:08,355 WARN [org.ovirt.engineextensions.aaa.ldap.AuthnExtension] (default task-56) [] [ovirt-engine-extension-aaa-ldap.authn::public-authn] Cannot initialize LDAP framework, deferring initialization. Error: /etc/ovirt-engine/aaa/xxxx.jks (No such file or directory) 2016-04-28 09:27:08,356 ERROR [org.ovirt.engine.core.bll.aaa.LoginUserCommand] (default task-56) [] Error during CanDoActionFailure.: Class: class org.ovirt.engine.core.extensions.mgr.ExtensionInvokeCommandFailedException 2016-04-28 09:27:13,941 WARN [org.ovirt.engineextensions.aaa.ldap.AuthnExtension] (default task-58) [] [ovirt-engine-extension-aaa-ldap.authn::public-authn] Cannot initialize LDAP framework, deferring initialization. Error: /etc/ovirt-engine/aaa/xxxx.jks (No such file or directory) 2016-04-28 09:27:13,941 ERROR [org.ovirt.engine.core.bll.aaa.LoginUserCommand] (default task-58) [] Error during CanDoActionFailure.: Class: class org.ovirt.engine.core.extensions.mgr.ExtensionInvokeCommandFailedException I checked the permissions of the file and it's path and they are allright. Changing the path to /tmp/xxx.jks didn't help too. Here is my .profile : include = <openldap.properties> vars.server = xxxx vars.user = cn=xxxx,ou=xxxx,o=xxxx,dc=xxxx,dc=xxxx vars.password = xxxx pool.default.auth.simple.bindDN = ${global:vars.user} pool.default.auth.simple.password = ${global:vars.password} pool.default.serverset.type = single pool.default.serverset.single.server = ${global:vars.server} pool.default.ssl.enable = true pool.default.serverset.single.port = 636 pool.default.ssl.truststore.file = /tmp/xxxx.jks pool.default.ssl.truststore.password = xxxx Any idea how to deal with that problem ?

4 28

how can I update several vm properties at a time in the ui?
by Nathanaël Blanchet 22 May '16

22 May '16

Hi all, I had to use: for i in $(cat myvms); do ovirt-shell -E "update vm $i --console-enabled true"; done to add the serial port on many vms. because, I didn't find the way to do the same with the UI, by highlighting several vm and editing them. I thought it was possible because doing the same to add some users to many vm is possible with UI. Can someone help me with this? -- Nathanaël Blanchet Supervision réseau Pôle Infrastrutures Informatiques 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

2 1

hosted-engine install stalls
by Johan Vermeulen 22 May '16

22 May '16

Hello All, my setup of a hosted engine on Centos7.2 hangs on : [ INFO ] Connecting Storage Pool In the log file I see a lot of items with "ok": *2016-04-20 13:04:01 DEBUG otopi.plugins.ovirt_hosted_engine_setup.storage.storage storage._activateStorageDomain:1067 activateStorageDomain2016-04-20 13:04:01 DEBUG otopi.plugins.ovirt_hosted_engine_setup.storage.storage heconflib.task_wait:283 Waiting for existing tasks to complete2016-04-20 13:04:01 DEBUG otopi.plugins.ovirt_hosted_engine_setup.storage.storage storage._activateStorageDomain:1076 {'status': {'message': 'OK', 'code': 0}, 'spm_st': {'spmId': 1, 'spmStatus': 'SPM', 'spmLver': 2}}2016-04-20 13:04:01 DEBUG otopi.plugins.ovirt_hosted_engine_setup.storage.storage storage._activateStorageDomain:1078 {'status': {'message': 'OK', 'code': 0}, 'info': {'name': 'No Description', 'isoprefix': '', 'pool_status': 'connected', 'lver': 2, 'spm_id': 1, 'master_uuid': '4bec7cce-b3d4-4a46-a1db-c7829951ec89', 'version': '3', 'domains': '4bec7cce-b3d4-4a46-a1db-c7829951ec89:Active,c817a126-f45b-4f03-b44b-e6249ef214a7:Active', 'type': 'POSIXFS', 'master_ver': 1}, 'dominfo': {'4bec7cce-b3d4-4a46-a1db-c7829951ec89': {'status': 'Active', 'diskfree': '1933926400', 'isoprefix': '', 'alerts': [], 'disktotal': '2046640128', 'version': 3}, 'c817a126-f45b-4f03-b44b-e6249ef214a7': {'status': 'Active', 'diskfree': '52560920576', 'isoprefix': '', 'alerts': [], 'disktotal': '53660876800', 'version': 3}}}2016-04-20 13:04:01 DEBUG otopi.plugins.ovirt_hosted_engine_setup.storage.storage storage._activateStorageDomain:1079 {'status': {'message': 'OK', 'code': 0}, '4bec7cce-b3d4-4a46-a1db-c7829951ec89': {'code': 0, 'actual': True, 'acquired': True, 'delay': '9.9272e-05', 'lastCheck': '0.3', 'version': 3, 'valid': True}, 'c817a126-f45b-4f03-b44b-e6249ef214a7': {'code': 0, 'actual': True, 'acquired': False, 'delay': '0.0889462', 'lastCheck': '9.0', 'version': 3, 'valid': True}}2016-04-20 13:04:01 DEBUG otopi.context context._executeMethod:142 Stage misc METHOD otopi.plugins.ovirt_hosted_engine_setup.storage.heconf.Plugin._misc_create_volume2016-04-20 13:04:01 DEBUG otopi.plugins.ovirt_hosted_engine_setup.storage.heconf heconflib.create_and_prepare_image:358 {'status': {'message': 'OK', 'code': 0}, 'uuid': '4835326e-5528-4c2f-831b-19dd323f1084'}2016-04-20 13:04:01 DEBUG otopi.plugins.ovirt_hosted_engine_setup.storage.heconf heconflib.create_and_prepare_image:372 Created configuration volume OK, request was:- image: f48e629e-17b3-4849-871e-e5547dd8b031- volume: 869c3519-6875-4f7a-a15f-6ddf93f23d93* but then it keeps displaying: *2016-04-20 13:05:02 DEBUG otopi.plugins.ovirt_hosted_engine_setup.storage.heconf heconflib.task_wait:283 Waiting for existing tasks to complete* and that's it. This is the summary of the install: --== CONFIGURATION PREVIEW ==-- Bridge interface : enp13s0 Engine FQDN : *********.ddns.net Bridge name : ovirtmgmt Host address : **********.ddns.net SSH daemon port : 8023 Firewall manager : iptables Gateway address : 192.168.66.1 Host name for web application : ************ Host ID : 1 Image size GB : 25 GlusterFS Share Name : hosted_engine_glusterfs GlusterFS Brick Provisioning : False Storage connection : ***********.ddns.net: /export/data Console type : qxl Memory size MB : 4096 MAC address : 00:16:3e:4f:0e:31 Boot type : cdrom Number of CPUs : 2 ISO image (cdrom boot/cloud-init) : /tmp/CentOS-7-x86_64-Minimal-1511.iso CPU Type : model_Penryn Thanks for any help on this issue. greetings, J.

2 1

VM migrations via san replication?
by At Work 22 May '16

22 May '16

I have a question regarding migration of VMs. It's my hope that someone can tell me if my migration idea can work or if it is not possible I want to migrate about 100-200 VMs from one oVirt deployment to a new oVirt deployment. Some of the VMs are over 3TB in size. Exporting and importing these via NFS would involve downtime and probably be a very lengthy process. I'm wondering if there's a way to get around this by using san replication. I have an equallogic san group currently in use by an oVirt installation 3.4.0-1.el6. I have a different equallogic group set up as storage for a different oVirt installation on another network. The new oVirt installation is version 3.6.4.1-1.el7.centos. My idea is to avoid the downtime and lengthy export/import process by telling my current production san to do volume replication to the new san that's been allocated for use as storage for our new oVirt installation. Once replication is in sync, I'll have exact copies of the original iSCSI volumes, VM's, metadata, etc. I am hoping I can then break replication, tell my new oVirt installation to log into the freshly-copied volumes, and use the VMs that were previously in use on the other installation. Due to the differences in oVirt versions and not knowing how oVirt internally handles metadata, I am not sure if this is possible. Can anyone confirm if this will work or not? Thank you all!

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