Checking further the logs I see this error given from libvirt of the host that has the guest VM running:
Apr 1 17:53:41 v0 libvirtd: 2018-04-01 17:53:41.298+0000: 1862: warning : qemuDomainObjBeginJobInternal:3847 : Cannot start job (query, none) for domain Data-Server; current job is (async nested, snapshot) owned by (1863 remoteDispatchDomainSnapshotCreateXML, 1863 remoteDispatchDomainSnapshotCreateXML) for (39s, 41s) Apr 1 17:53:41 v0 libvirtd: 2018-04-01 17:53:41.299+0000: 1862: error : qemuDomainObjBeginJobInternal:3859 : Timed out during operation: cannot acquire state change lock (held by remoteDispatchDomainSnapshotCreateXML) Apr 1 17:53:57 v0 journal: vdsm Executor WARN Worker blocked: <Worker name=jsonrpc/3 running <Task <JsonRpcTask {'params': {u'frozen': False, u'vmID': u'6bdb3d02-cc33-4019-97cd-7447aecc1e02', u'snapDrives': [{u'baseVolumeID': u'adfabed5-451b-4f46-b22a-45f720b06110', u'domainID': u'2c4b8d45-3d05-4619-9a36-1ecd199d3056', u'volumeID': u'cc0d0772-924c-46db-8ad6-a2b0897c313f', u'imageID': u'7eeadedc-f247-4a31-840d-4de622bf3541'}, {u'baseVolumeID': u'0d960c12-3bcf-4918-896d-bd8e68b5278b', u'domainID': u'2c4b8d45-3d05-4619-9a36-1ecd199d3056', u'volumeID': u'590a6bdd-a9e2-444e-87bc-721c5f8586eb', u'imageID': u'da0e4111-6bbe-43cb-bf59-db5fbf5c3e38'}]}, 'jsonrpc': '2.0', 'method': u'VM.snapshot', 'id': u'be7912e6-ba3d-4357-8ba1-abe40825acf1'} at 0x3bf84d0> timeout=60, duration=60 at 0x3bf8050> task#=416 at 0x20d7f90> Immediately after above the engine reports the VM as unresponsive. The SPM host does not log any issues. In the same time, the 3 hosts are fairly idle with only one running guest VM. The gluster traffic is dedicated to a separate Gbit NIC of the servers (dedicated VLAN) while the management network is on a separate network. The gluster traffic does not exceed 40 Mbps during the snapshot operation. Can't understand why libvirt is logging timeout. Alex On Thu, Mar 29, 2018 at 9:42 PM, Alex K <rightkickt...@gmail.com> wrote: > Any idea with this issue? > I am still trying to understand what may be causing this issue. > > Many thanx for any assistance. > > Alex > > On Wed, Mar 28, 2018 at 10:06 AM, Yedidyah Bar David <d...@redhat.com> > wrote: > >> On Tue, Mar 27, 2018 at 3:38 PM, Sandro Bonazzola <sbona...@redhat.com> >> wrote: >> >>> >>> >>> 2018-03-27 14:34 GMT+02:00 Alex K <rightkickt...@gmail.com>: >>> >>>> Hi All, >>>> >>>> Any idea on the below? >>>> >>>> I am using oVirt Guest Tools 4.2-1.el7.centos for the VM. >>>> The Window 2016 server VM (which it the one with the relatively big >>>> disks: 500 GB) it is consistently rendered unresponsive when trying to get >>>> a snapshot. >>>> I amy provide any other additional logs if needed. >>>> >>> >>> Adding some people to the thread >>> >> >> Adding more people for this part. >> >> >>> >>> >>> >>>> >>>> Alex >>>> >>>> On Sun, Mar 25, 2018 at 7:30 PM, Alex K <rightkickt...@gmail.com> >>>> wrote: >>>> >>>>> Hi folks, >>>>> >>>>> I am facing frequently the following issue: >>>>> >>>>> On some large VMs (Windows 2016 with two disk drives, 60GB and 500GB) >>>>> when attempting to create a snapshot of the VM, the VM becomes >>>>> unresponsive. >>>>> >>>>> The errors that I managed to collect were: >>>>> >>>>> vdsm error at host hosting the VM: >>>>> 2018-03-25 14:40:13,442+0000 WARN (vdsm.Scheduler) [Executor] Worker >>>>> blocked: <Worker name=jsonrpc/7 running <Task <JsonRpcTask {'params': >>>>> {u'frozen': False, u'vmID': u'a5c761a2-41cd-40c2-b65f-f3819293e8a4', >>>>> u'snapDrives': [{u'baseVolumeID': u'2a33e585-ece8-4f4d-b45d-5ecc9239200e', >>>>> u'domainID': u'888e3aae-f49f-42f7-a7fa-76700befabea', u'volumeID': >>>>> u'e9a01ebd-83dd-40c3-8c83-5302b0d15e04', u'imageID': >>>>> u'c75b8e93-3067-4472-bf24-dafada224e4d'}, {u'baseVolumeID': >>>>> u'3fb2278c-1b0d-4677-a529-99084e4b08af', u'domainID': >>>>> u'888e3aae-f49f-42f7-a7fa-76700befabea', u'volumeID': >>>>> u'78e6b6b1-2406-4393-8d92-831a6d4f1337', u'imageID': >>>>> u'd4223744-bf5d-427b-bec2-f14b9bc2ef81'}]}, 'jsonrpc': '2.0', >>>>> 'method': u'VM.snapshot', 'id': u'89555c87-9701-4260-9952-789965261e65'} >>>>> at 0x7fca4004cc90> timeout=60, duration=60 at 0x39d8210> task#=155842 at >>>>> 0x2240e10> (executor:351) >>>>> 2018-03-25 14:40:15,261+0000 INFO (jsonrpc/3) [jsonrpc.JsonRpcServer] >>>>> RPC call VM.getStats failed (error 1) in 0.01 seconds (__init__:539) >>>>> 2018-03-25 14:40:17,471+0000 WARN (jsonrpc/5) [virt.vm] >>>>> (vmId='a5c761a2-41cd-40c2-b65f-f3819293e8a4') monitor became >>>>> unresponsive (command timeout, age=67.9100000001) (vm:5132) >>>>> >>>>> engine.log: >>>>> 2018-03-25 14:40:19,875Z WARN [org.ovirt.engine.core.dal.dbb >>>>> roker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler2) >>>>> [1d737df7] EVENT_ID: VM_NOT_RESPONDING(126), Correlation ID: null, Call >>>>> Stack: null, Custom ID: null, Custom Event ID: -1, Message: VM Data-Server >>>>> is not responding. >>>>> >>>>> 2018-03-25 14:42:13,708Z ERROR [org.ovirt.engine.core.dal.dbb >>>>> roker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler5) >>>>> [17789048-009a-454b-b8ad-2c72c7cd37aa] EVENT_ID: >>>>> VDS_BROKER_COMMAND_FAILURE(10,802), Correlation ID: null, Call Stack: >>>>> null, Custom ID: null, Custom Event ID: -1, Message: VDSM v1.cluster >>>>> command SnapshotVDS failed: Message timeout which can be caused by >>>>> communication issues >>>>> 2018-03-25 14:42:13,708Z ERROR [org.ovirt.engine.core.vdsbrok >>>>> er.vdsbroker.SnapshotVDSCommand] (DefaultQuartzScheduler5) >>>>> [17789048-009a-454b-b8ad-2c72c7cd37aa] Command >>>>> 'SnapshotVDSCommand(HostName = v1.cluster, >>>>> SnapshotVDSCommandParameters:{runAsync='true', >>>>> hostId='a713d988-ee03-4ff0-a0cd-dc4cde1507f4', >>>>> vmId='a5c761a2-41cd-40c2-b65f-f3819293e8a4'})' execution failed: >>>>> VDSGenericException: VDSNetworkException: Message timeout which can be >>>>> caused by communication issues >>>>> 2018-03-25 14:42:13,708Z WARN [org.ovirt.engine.core.bll.sna >>>>> pshots.CreateAllSnapshotsFromVmCommand] (DefaultQuartzScheduler5) >>>>> [17789048-009a-454b-b8ad-2c72c7cd37aa] Could not perform live >>>>> snapshot due to error, VM will still be configured to the new created >>>>> snapshot: EngineException: org.ovirt.engine.core.vdsbroke >>>>> r.vdsbroker.VDSNetworkException: VDSGenericException: >>>>> VDSNetworkException: Message timeout which can be caused by communication >>>>> issues (Failed with error VDS_NETWORK_ERROR and code 5022) >>>>> 2018-03-25 14:42:13,708Z WARN >>>>> [org.ovirt.engine.core.vdsbroker.VdsManager] >>>>> (org.ovirt.thread.pool-6-thread-15) [17789048-009a-454b-b8ad-2c72c7cd37aa] >>>>> Host 'v1.cluster' is not responding. It will stay in Connecting state for >>>>> a >>>>> grace period of 61 seconds and after that an attempt to fence the host >>>>> will >>>>> be issued. >>>>> 2018-03-25 14:42:13,725Z WARN [org.ovirt.engine.core.dal.dbb >>>>> roker.auditloghandling.AuditLogDirector] >>>>> (org.ovirt.thread.pool-6-thread-15) [17789048-009a-454b-b8ad-2c72c7cd37aa] >>>>> EVENT_ID: VDS_HOST_NOT_RESPONDING_CONNECTING(9,008), Correlation ID: >>>>> null, Call Stack: null, Custom ID: null, Custom Event ID: -1, Message: >>>>> Host >>>>> v1.cluster is not responding. It will stay in Connecting state for a grace >>>>> period of 61 seconds and after that an attempt to fence the host will be >>>>> issued. >>>>> 2018-03-25 14:42:13,751Z WARN [org.ovirt.engine.core.dal.dbb >>>>> roker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler5) >>>>> [17789048-009a-454b-b8ad-2c72c7cd37aa] EVENT_ID: >>>>> USER_CREATE_LIVE_SNAPSHOT_FINISHED_FAILURE(170), Correlation ID: >>>>> 17789048-009a-454b-b8ad-2c72c7cd37aa, Job ID: >>>>> 16e48c28-a8c7-4841-bd81-1f2d370f345d, Call Stack: >>>>> org.ovirt.engine.core.common.errors.EngineException: EngineException: >>>>> org.ovirt.engine.core.vdsbroker.vdsbroker.VDSNetworkException: >>>>> VDSGenericException: VDSNetworkException: Message timeout which can be >>>>> caused by communication issues (Failed with error VDS_NETWORK_ERROR and >>>>> code 5022) >>>>> 2018-03-25 14:42:14,372Z ERROR [org.ovirt.engine.core.dal.dbb >>>>> roker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler5) [] >>>>> EVENT_ID: USER_CREATE_SNAPSHOT_FINISHED_FAILURE(69), Correlation ID: >>>>> 17789048-009a-454b-b8ad-2c72c7cd37aa, Job ID: >>>>> 16e48c28-a8c7-4841-bd81-1f2d370f345d, Call Stack: >>>>> org.ovirt.engine.core.common.errors.EngineException: EngineException: >>>>> org.ovirt.engine.core.vdsbroker.vdsbroker.VDSNetworkException: >>>>> VDSGenericException: VDSNetworkException: Message timeout which can be >>>>> caused by communication issues (Failed with error VDS_NETWORK_ERROR and >>>>> code 5022) >>>>> 2018-03-25 14:42:14,372Z WARN [org.ovirt.engine.core.bll.Con >>>>> currentChildCommandsExecutionCallback] (DefaultQuartzScheduler5) [] >>>>> Command 'CreateAllSnapshotsFromVm' id: >>>>> 'bad4f5be-5306-413f-a86a-513b3cfd3c66' >>>>> end method execution failed, as the command isn't marked for endAction() >>>>> retries silently ignoring >>>>> 2018-03-25 14:42:15,951Z WARN [org.ovirt.engine.core.dal.dbb >>>>> roker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler5) >>>>> [5017c163] EVENT_ID: VDS_NO_SELINUX_ENFORCEMENT(25), Correlation ID: >>>>> null, Call Stack: null, Custom ID: null, Custom Event ID: -1, Message: >>>>> Host >>>>> v1.cluster does not enforce SELinux. Current status: DISABLED >>>>> 2018-03-25 14:42:15,951Z WARN >>>>> [org.ovirt.engine.core.vdsbroker.VdsManager] >>>>> (DefaultQuartzScheduler5) [5017c163] Host 'v1.cluster' is running with >>>>> SELinux in 'DISABLED' mode >>>>> >>>>> As soon as the VM is unresponsive, the VM console that was already >>>>> open freezes. I can resume the VM only by powering off and on. >>>>> >>>>> I am using ovirt 4.1.9 with 3 nodes and self-hosted engine. I am >>>>> running mostly Windows 10 and Windows 2016 server VMs. I have installed >>>>> latest guest agents from: >>>>> >>>>> http://resources.ovirt.org/pub/ovirt-4.2/iso/oVirt-toolsSetu >>>>> p/4.2-1.el7.centos/ >>>>> >>>>> At the screen where one takes a snapshot I get a warning saying "Could >>>>> not detect guest agent on the VM. Note that without guest agent the data >>>>> on >>>>> the created snapshot may be inconsistent". See attached. I have verified >>>>> that ovirt guest tools are installed and shown at installed apps at engine >>>>> GUI. Also Ovirt Guest Agent (32 bit) and qemu-ga are listed as running at >>>>> the windows tasks manager. Shouldn't ovirt guest agent be 64 bit on >>>>> Windows >>>>> 64 bit? >>>>> >>>> >> No idea, but I do not think it's related to your problem of freezing >> while taking a snapshot. >> >> This error was already discussed in the past, see e.g.: >> >> http://lists.ovirt.org/pipermail/users/2017-June/082577.html >> >> Best regards, >> -- >> Didi >> > >
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