Dear oVirt, We are running 4.3.3 oVirt with SHE on three CentOS nodes for HA – with NFS storage. We also have two Local Storage DCs managed by same SHE. [cid:image001.png@01D50A59.F4276FD0] The issue we are reporting was present on 4.3.2 as well. The memory usage on both hosts (third one is in maintenance mode) does not go above 45%: [cid:image002.png@01D50A59.F4276FD0] I have also attached the UI Dashboard screenshot. However, when trying to start one VM: [cid:image003.png@01D50A59.F4276FD0] Engine reports that there is not enough memory and writes the following in the engine.log: 2019-05-14 11:23:10,809Z INFO [org.ovirt.engine.core.bll.RunVmCommand] (default task-14) [63aa9817-80fd-4b18-8c86-26c910a2954a] Lock Acquired to object 'EngineLock:{exclusiveLocks='[13b2299f-b4b4-48e4-b2f9-09450eff235d=VM]', sharedLocks=''}' 2019-05-14 11:23:10,819Z INFO [org.ovirt.engine.core.vdsbroker.IsVmDuringInitiatingVDSCommand] (default task-14) [63aa9817-80fd-4b18-8c86-26c910a2954a] START, IsVmDuringInitiatingVDSCommand( IsVmDuringInitiatingVDSCommandParameters:{vmId='13b2299f-b4b4-48e4-b2f9-09450eff235d'}), log id: 5f80129f 2019-05-14 11:23:10,819Z INFO [org.ovirt.engine.core.vdsbroker.IsVmDuringInitiatingVDSCommand] (default task-14) [63aa9817-80fd-4b18-8c86-26c910a2954a] FINISH, IsVmDuringInitiatingVDSCommand, return: false, log id: 5f80129f 2019-05-14 11:23:10,833Z INFO [org.ovirt.engine.core.bll.scheduling.SchedulingManager] (default task-14) [63aa9817-80fd-4b18-8c86-26c910a2954a] Candidate host 'ovirt-staging-hv-01' ('d81b296a-f3b2-49ea-9b4d-04c90f3508e9') was filtered out by 'VAR__FILTERTYPE__INTERNAL' filter 'Memory' (correlation id: null) 2019-05-14 11:23:10,833Z INFO [org.ovirt.engine.core.bll.scheduling.SchedulingManager] (default task-14) [63aa9817-80fd-4b18-8c86-26c910a2954a] Candidate host 'ovirt-staging-hv-02' ('f4fdeccd-4cf4-4ed7-9eb1-d98ac65c4ce6') was filtered out by 'VAR__FILTERTYPE__INTERNAL' filter 'Memory' (correlation id: null) 2019-05-14 11:23:10,838Z ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (default task-14) [63aa9817-80fd-4b18-8c86-26c910a2954a] EVENT_ID: USER_FAILED_RUN_VM(54), Failed to run VM csm2-216-d due to a failed validation: [Cannot run VM. There is no host that satisfies current scheduling constraints. See below for details:, The host ovirt-staging-hv-01 did not satisfy internal filter Memory because its available memory is too low (0 MB) to run the VM., The host ovirt-staging-hv-01 did not satisfy internal filter Memory because its available memory is too low (0 MB) to run the VM.] (User: admin@internal-authz). 2019-05-14 11:23:10,838Z WARN [org.ovirt.engine.core.bll.RunVmCommand] (default task-14) [63aa9817-80fd-4b18-8c86-26c910a2954a] Validation of action 'RunVm' failed for user admin@internal-authz. Reasons: VAR__ACTION__RUN,VAR__TYPE__VM,SCHEDULING_ALL_HOSTS_FILTERED_OUT,VAR__FILTERTYPE__INTERNAL,$hostName ovirt-staging-hv-01,$filterName Memory,$availableMem 0,VAR__DETAIL__NOT_ENOUGH_MEMORY,SCHEDULING_HOST_FILTERED_REASON_WITH_DETAIL,VAR__FILTERTYPE__INTERNAL,$hostName ovirt-staging-hv-02,$filterName Memory,$availableMem 0,VAR__DETAIL__NOT_ENOUGH_MEMORY,SCHEDULING_HOST_FILTERED_REASON_WITH_DETAIL 2019-05-14 11:23:10,838Z INFO [org.ovirt.engine.core.bll.RunVmCommand] (default task-14) [63aa9817-80fd-4b18-8c86-26c910a2954a] Lock freed to object 'EngineLock:{exclusiveLocks='[13b2299f-b4b4-48e4-b2f9-09450eff235d=VM]', sharedLocks=''}' Current memory optimization is set to “None” Please let me know if you need additional log files. Kindly awaiting your reply. Marko Vrgotic Sr. System Engineer