Bug 1893773
| Summary: | NVDIMM: memory usage in WebAdmin is always ~100% regardless to actual usage inside the VM. | ||||||||||||||||
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| Product: | [oVirt] vdsm | Reporter: | Nisim Simsolo <nsimsolo> | ||||||||||||||
| Component: | General | Assignee: | Tomáš Golembiovský <tgolembi> | ||||||||||||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Nisim Simsolo <nsimsolo> | ||||||||||||||
| Severity: | medium | Docs Contact: | |||||||||||||||
| Priority: | unspecified | ||||||||||||||||
| Version: | 4.40.35 | CC: | ahadas, bugs, nsimsolo | ||||||||||||||
| Target Milestone: | ovirt-4.4.4 | Keywords: | Reopened | ||||||||||||||
| Target Release: | 4.40.38 | Flags: | pm-rhel:
ovirt-4.4+
pm-rhel: planning_ack+ ahadas: devel_ack+ pm-rhel: testing_ack+ |
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| Hardware: | Unspecified | ||||||||||||||||
| OS: | Unspecified | ||||||||||||||||
| Whiteboard: | |||||||||||||||||
| Fixed In Version: | vdsm-4.40.38 | Doc Type: | If docs needed, set a value | ||||||||||||||
| Doc Text: | Story Points: | --- | |||||||||||||||
| Clone Of: | Environment: | ||||||||||||||||
| Last Closed: | 2021-01-12 16:23:50 UTC | Type: | Bug | ||||||||||||||
| Regression: | --- | Mount Type: | --- | ||||||||||||||
| Documentation: | --- | CRM: | |||||||||||||||
| Verified Versions: | Category: | --- | |||||||||||||||
| oVirt Team: | Virt | RHEL 7.3 requirements from Atomic Host: | |||||||||||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||||||||||
| Embargoed: | |||||||||||||||||
| Attachments: |
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Created attachment 1725859 [details]
engine.log
Created attachment 1725860 [details]
vdsm.log
Created attachment 1725861 [details]
vdsm.log.1.xz
Created attachment 1725862 [details]
VM domxml, without VNDIMM
Created attachment 1725864 [details]
VM domxml, with NVDIMM
Created attachment 1725868 [details]
VM QEMU log
This bug has low overall severity and passed an automated regression suite, and is not going to be further verified by QE. If you believe special care is required, feel free to re-open to ON_QA status. Verified: ovirt-engine-4.4.4.6-0.1.el8ev vdsm-4.40.40-1.el8ev.x86_64 qemu-kvm-5.1.0-14.module+el8.3.0+8790+80f9c6d8.1.x86_64 libvirt-daemon-6.6.0-7.1.module+el8.3.0+8852+b44fca9f.x86_64 This bugzilla is included in oVirt 4.4.4 release, published on December 21st 2020. Since the problem described in this bug report should be resolved in oVirt 4.4.4 release, it has been closed with a resolution of CURRENT RELEASE. If the solution does not work for you, please open a new bug report. |
Description of problem: - When running VM with NVDIMM device attached, the memory usage percentage in WebAdmin is always around 100% although the actual usage inside the VM is around 1% - When removing NVDIMM and running the same VM again, the memory usage is displayed correctly. -------------------- VM memory configuration and usage: [root@dhcp16-201-114 ~]# ndctl list --namespaces [ { "dev":"namespace0.0", "mode":"raw", "size":266153754624, "sector_size":512, "blockdev":"pmem0" } ] [root@dhcp16-201-114 ~]# ndctl list --regions [ { "dev":"region0", "size":266153754624, "available_size":0, "max_available_extent":0, "type":"pmem", "persistence_domain":"unknown" } ] [root@dhcp16-201-114 ~]# dmesg | grep pmem [ 4.628930] pmem0: detected capacity change from 0 to 266153754624 [root@dhcp16-201-114 ~]# cat /proc/meminfo | grep -i memtotal MemTotal: 7951468 kB [root@dhcp16-201-114 ~]# free total used free shared buff/cache available Mem: 7951468 184188 7541536 8796 225744 7516956 Swap: 0 0 0 [root@dhcp16-201-114 ~]# ------------------ VM domxml: [root@intel-purley-04 images]# virsh -r dumpxml 16 | grep -i memory <ovirt-vm:minGuaranteedMemoryMb type="int">8192</ovirt-vm:minGuaranteedMemoryMb> <maxMemory slots='16' unit='KiB'>293472256</maxMemory> <memory unit='KiB'>268306432</memory> <currentMemory unit='KiB'>8388608</currentMemory> <cell id='0' cpus='0-15' memory='8388608' unit='KiB'/> <memory model='nvdimm' access='shared'> </memory> Version-Release number of selected component (if applicable): ovirt-engine-4.4.3.8-0.1.el8ev vdsm-4.40.35-1.el8ev.x86_64 libvirt-daemon-6.6.0-6.module+el8.3.0+8125+aefcf088.x86_64 qemu-kvm-5.1.0-13.module+el8.3.0+8382+afc3bbea.x86_64 How reproducible: 100% Steps to Reproduce: 1. Run VM with NVDIMM device. 2. Observe WebAdmin -> Compute -> VMs, memory column 3. Actual results: Memory usage is always 97% Expected results: Memory usage should display to the actual usage. Additional info: VMs domxml of same VM with/without NVDIMM device attached. VM qemu log and engine.log attached vdsm.log attached: VM without NVDIMM dtarted at: 2020-11-02 08:51:02,445-0500 INFO (jsonrpc/3) [api.virt] START create(vmParams={'vmId': 'a125d2eb-91fa-4399-b931-6c1aea6d9d55' VM with NVDIMM started at: 2020-11-02 09:25:54,813-0500 INFO (jsonrpc/6) [api.virt] START create(vmParams={'vmId': 'a125d2eb-91fa-4399-b931-6c1aea6d9d55',