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docs: formatdomain: Mention that vhostuser interface with mode='server' waits for connection

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When starting a VM with a vhost-user interface in server mode qemu will
wait for the incoming connection without running CPUs. This isn't really
documented in our XML. Additionally when hotplugging the same interface
the above will not happen.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
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Peter Krempa 2025-02-17 16:11:23 +01:00
parent 1348aa8f6e
commit 33ae851409
1 changed files with 5 additions and 0 deletions
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docs/formatdomain.rst
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@ -6346,6 +6346,11 @@ two attributes ``enabled`` (which accepts ``yes`` and ``no``) and
``timeout`` which specifies the amount of seconds after which
hypervisor tries to reconnect.
Note that when ``mode='server'`` is used, the hypervisor will wait for the
incoming connection to be established prior to actually running the VM. This is
not possible when hotplugging an interface with such config so the VM will
continue to run even when no connection is made. It's advised to use
``mode='client'`` instead.
vhost-user connection with passt backend
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^