Re: persistent write-back cache and quemu

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On Fri, Jul 1, 2022 at 8:32 AM Ansgar Jazdzewski
<a.jazdzewski@xxxxxxxxxxxxxx> wrote:
>
> Hi folks,
>
> I did a little testing with the persistent write-back cache (*1) we
> run ceph quincy 17.2.1 qemu 6.2.0
>
> rbd.fio works with the cache, but as soon as we start we get something like
>
> error: internal error: process exited while connecting to monitor:
> Failed to open module: /usr/lib/x86_64-linux-gnu/qemu/block-rbd.so:
> undefined symbol: aio_bh_schedule_oneshot_full
> 2022-06-30T13:08:39.640532Z qemu-system-x86_64: -blockdev
>
> so my assumption is that we need to do a bit more to have it running
> with qemu, if you have some more information on how to get it running
> please let me know!

Hi Ansgar,

The QEMU failure doesn't look related at first sight.  Have you tried
opening an image with the same QEMU without persistent cache enabled?

Thanks,

                Ilya
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