Re: [Xen-devel] [qemu-mainline test] 139462: regressions - FAIL

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

On Mon, Jul 29, 2019 at 06:05:44PM +0000, osstest service owner wrote:
> flight 139462 qemu-mainline real [real]
> http://logs.test-lab.xenproject.org/osstest/logs/139462/
> 
> Regressions :-(
> 
> Tests which did not succeed and are blocking,
> including tests which could not be run:
>  test-amd64-i386-xl-qemuu-ovmf-amd64 18 guest-start/debianhvm.repeat fail 
> REGR. vs. 139300

In QEMU's log:
qemu-system-i386: error: unknown operation (175)

This seems to be an error message from
hw/block/dataplane/xen-block.c:161  xen_block_parse_request()
which would suggest that a request with operation=175 was sent by the
guest (max operation value seems to be 6).

Maybe something changed in OVMF, and reveal a bug in its block front
implementation. I can think of that 
https://xenproject.atlassian.net/browse/XEN-128.

I don't know what the guest is doing, so we would need more logs, from
maybe ovmf. Also, we probably want better error message from QEMU, like
which disk have an issue.

-- 
Anthony PERARD

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