Bug 2009123
| Summary: | Wrong genid is generated when doing certain v2v conversions because of qemu byte-swapping | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 9 | Reporter: | Vera <vwu> |
| Component: | qemu-kvm | Assignee: | Richard W.M. Jones <rjones> |
| qemu-kvm sub component: | Devices | QA Contact: | jingzhao <jinzhao> |
| Status: | CLOSED WONTFIX | Docs Contact: | |
| Severity: | high | ||
| Priority: | unspecified | CC: | ailan, coli, jferlan, jinzhao, juzhang, lersek, mprivozn, rjones, virt-maint, xuzhang, yiwei |
| Version: | 9.0 | Keywords: | Reopened, Triaged |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2023-06-22 07:28:20 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Vera
2021-09-30 02:39:53 UTC
I believe this to be a bug in qemu-kvm. See: https://lists.gnu.org/archive/html/qemu-devel/2021-09/threads.html#07393 There's a long conversation on the libvir-list on this topic: https://listman.redhat.com/archives/libvir-list/2021-September/msg00931.html It's now believed that it's qemu who has the bug, not libvirt. This bug still exists in qemu. 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. It's not the same as Bug 1118834. It's a bug in how that feature was implemented. I wrote an article about VM genIDs which should help: https://github.com/libguestfs/virt-v2v/blob/master/docs/vm-generation-id-across-hypervisors.txt Basically any use of GUID is wrong, so the whole fundamental basic way qemu + Linux implement this feature is wrong. Any question involving GUIDs doesn't make sense. The bug still exists in qemu, so ... (In reply to Richard W.M. Jones from comment #10) > The bug still exists in qemu, so ... Then is there an upstream issue on this? Is someone actually working on it? Does it really matter to RHEL? If it doesn't really matter to RHEL, then the RHEL bug should be closed DEFERRED, and wait for upstream fix. My recollection on the genid in qemu was it was a long process to actually get the support added and then the work was abandoned (I was a libvirt developer at the time adding the genid support to libvirt). I see upstream Ani Sinha added himself as a reviewer of vmgenid and that it's listed as an orphaned device. Perhaps this bug can be re-assigned to Ani since he now works for Red Hat, but I still think we should create the upstream issue and close the RHEL bug. I did look into fixing this in qemu but it's quite tricky to make a fix which is backwards compatible, and involves dealing with QOM weirdness, so I didn't get very far. It would probably be easy for someone who deals with qemu full time. I have set the stale date to now + 1 month. 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. |