Bug 2020133
| Summary: | Boot the windows 11 guest with 256 queues, qemu core dump | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Lei Yang <leiyang> | |
| Component: | qemu-kvm | Assignee: | Marek Kedzierski <mkedzier> | |
| qemu-kvm sub component: | Networking | QA Contact: | Lei Yang <leiyang> | |
| Status: | NEW --- | Docs Contact: | Daniel Vozenilek <davozeni> | |
| Severity: | high | |||
| Priority: | high | CC: | aadam, ailan, chayang, coli, jherrman, jinzhao, juzhang, leidwang, lvivier, mkedzier, qcheng, qizhu, virt-maint, wji | |
| Version: | 8.6 | Keywords: | Reopened, Triaged | |
| Target Milestone: | rc | Flags: | leiyang:
needinfo?
(lvivier) |
|
| Target Release: | --- | |||
| Hardware: | Unspecified | |||
| OS: | Windows | |||
| Whiteboard: | ||||
| Fixed In Version: | Doc Type: | Known Issue | ||
| Doc Text: |
.Using a large number of queues might cause Windows virtual machines to fail
Windows virtual machines (VMs) might fail when the virtual Trusted Platform Module (vTPM) device is enabled and the _multi-queue virtio-net_ feature is configured to use more than 250 queues.
This problem is caused by a limitation in the vTPM device. The vTPM device has a hardcoded limit on the maximum number of opened file descriptors. Since multiple file descriptors are opened for every new queue, the internal vTPM limit can be exceeded, causing the VM to fail.
To work around this problem, choose one of the following two options:
* Keep the vTPM device enabled, but use less than 250 queues.
* Disable the vTPM device to use more than 250 queues.
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Story Points: | --- | |
| Clone Of: | ||||
| : | 2020146 (view as bug list) | Environment: | ||
| Last Closed: | 2023-05-04 07:28:32 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: | ||||
| Bug Blocks: | 2020146, 2025898 | |||
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Comment 7
John Ferlan
2021-11-24 12:51:46 UTC
*** Bug 2139259 has been marked as a duplicate of this bug. *** After evaluating this issue, there are no plans to address it further or fix it in an upcoming release. Therefore, it is being closed. If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened. ignore comment 27 |