Bug 2232364

Summary:	various kind of guests freeze on rhel 8.8
Product:	Red Hat Enterprise Linux 8	Reporter:	Marian Jankular <mjankula>
Component:	qemu-kvm	Assignee:	Virtualization Maintenance <virt-maint>
qemu-kvm sub component:	General	QA Contact:	Li Xiaohui <xiaohli>
Status:	NEW ---	Docs Contact:
Severity:	medium
Priority:	high	CC:	ailan, chayang, coli, jen, jferlan, jinzhao, juzhang, kkiwi, lijin, luis.fernandez.alvarez, mdeng, virt-maint, yama, zhguo
Version:	8.8	Flags:	mjankula: needinfo? (ailan) xiaohli: needinfo? (mjankula)
Target Milestone:	rc
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OS:	Unspecified
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Description Marian Jankular 2023-08-16 14:00:30 UTC

Description of problem:
various kinds of guests freeze on rhel 8.8

Version-Release number of selected component (if applicable):

glibc-2.28-225.el8.x86_64
kernel-4.18.0-425.19.2.el8_7.x86_64 or kernel-4.18.0-477.13.1.el8_8.x86_64
libvirt-daemon-8.0.0-19.module+el8.8.0+18453+e0bf0d1d.x86_64
qemu-kvm-common-6.2.0-32.module+el8.8.0+18361+9f407f6e.x86_64



How reproducible:
no patern found happening 5-10 times at the customer site per week

Additional info:

Comment 3 Li Xiaohui 2023-08-17 11:35:17 UTC

Hi Marian,

Double confirm with you about the following questions:

> > We’re running Openstack Train on RHEL 8.8 and we've seen several cases of VMs freezing with no identifiable errors a few days after those VMs had been live 
> > migrated from CentOS 7 hypervisors running on the same hardware platforms

> > The hypervisors are all running RHEL 8. We see those hangs from kernel 4.18.0-425.13.1.el8_7.x86_64 to kernel 4.18.0-477.13.1.el8_8.x86_64.


1.Per the above words:
1) the customer is migrating VMs from CentOS 7 to RHEL 8.8/8.7, right? 
If so, have they tried migrating from CentOS 7 to CentOS 7 and are they experiencing the same issues migrating from CentOS 7 to RHEL 8.8/8.7?

2) I checked https://access.redhat.com/support/cases/#/case/03573369, see the cpu model as 'Xeon(R) CPU E5-2630 v4' in the /proc/cpuinfo file.
Combined with your statement above that "the migration occurs on the same hardware platforms", then the CPU models on both the source and target machines are Xeon(R) CPU E5-2630 v4?