Bug 1638077
| Summary: | Cross migration from RHEL7.5 to RHEL7.6 fails with cpu flag stibp [rhel-7.6.z] | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Oneata Mircea Teodor <toneata> |
| Component: | qemu-kvm-rhev | Assignee: | Eduardo Habkost <ehabkost> |
| Status: | CLOSED ERRATA | QA Contact: | jingzhao <jinzhao> |
| Severity: | urgent | Docs Contact: | |
| Priority: | urgent | ||
| Version: | 7.6 | CC: | chayang, dgilbert, ehabkost, fjin, hannsj_uhl, hhuang, jdenemar, jherrman, jinzhao, juzhang, kchamart, knoel, michen, mrezanin, mtessun, salmy, toneata, virt-maint, xuzhang, zhguo |
| Target Milestone: | rc | Keywords: | Regression, ZStream |
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | qemu-kvm-rhev-2.12.0-18.el7_6.1 | Doc Type: | Bug Fix |
| Doc Text: |
Previously, migrating virtual machines (VMs) from a Red Hat Enterprise Linux 7.5 host with a single-thread indirect branch predictors (STIBP) flag set in some cases failed. This update ensures that the flag is consistently added to VMs with an AMD64 or Intel 64 virtual CPU (vCPU), which prevents the described problem from occurring.
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Story Points: | --- |
| Clone Of: | 1633150 | Environment: | |
| Last Closed: | 2018-11-01 11:33:04 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1633150 | ||
| Bug Blocks: | |||
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Description
Oneata Mircea Teodor
2018-10-10 15:29:06 UTC
Reproduce it with qemu-kvm-rhev-2.12.0-18.el7.x86_64 and verify it with qemu-kvm-rhev-2.12.0-18.el7_6.1.x86_64 migrate successfully from 7.5 host to 7.6 host with stibp=on qemu line: /usr/libexec/qemu-kvm \ -machine pc-i440fx-rhel7.5.0,accel=kvm,usb=off \ -cpu IvyBridge,ss=on,pcid=on,hypervisor=on,arat=on,tsc_adjust=on,stibp=on,ssbd=on,xsaveopt=on \ -nodefaults -rtc base=utc \ -m 4G \ -smp 4,sockets=4,cores=1,threads=1 \ -enable-kvm \ -uuid 990ea161-6b67-47b2-b803-19fb01d30d12 \ -k en-us \ -nodefaults \ -chardev file,path=/home/seabios.log,id=seabios -device isa-debugcon,chardev=seabios,iobase=0x402 \ -boot menu=on \ -qmp tcp:0:6667,server,nowait \ -usb \ -device usb-tablet \ -vga qxl \ -drive file=/mnt/rhel76-64-virtio-scsi.qcow2,if=none,id=drive-virtio-disk0,format=qcow2,cache=none,werror=stop,rerror=stop \ -device virtio-blk-pci,drive=drive-virtio-disk0,id=virtio-disk0 \ -device virtio-net-pci,netdev=tap10,mac=00:52:68:26:31:03,id=net0 -netdev tap,id=tap10 \ -vnc :1 \ -spice port=5910,addr=0.0.0.0,disable-ticketing,seamless-migration=on \ -monitor stdio \ -incoming tcp:0:5800 according to above result. change to verify Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2018:3444 |