Re: [PATCH v11 1/7] Introduce yank feature

[Eric Blake]

On 11/15/20 5:36 AM, Lukas Straub wrote:
> The yank feature allows to recover from hanging qemu by "yanking"

"allows to $verb" is not idiomatic English, better is "allows $subject
to verb" or "allows ${verb}ing".  In this case, I suggest "The yank
feature allows the recovery of a hung qemu by "yanking" at various parts".

> at various parts. Other qemu systems can register themselves and
> multiple yank functions. Then all yank functions for selected
> instances can be called by the 'yank' out-of-band qmp command.
> Available instances can be queried by a 'query-yank' oob command.
> 
> Signed-off-by: Lukas Straub <lukasstraub2@web.de>
> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
> Reviewed-by: Markus Armbruster <armbru@redhat.com>
> ---

> +# @YankInstanceType:
> +#
> +# An enumeration of yank instance types. See @YankInstance for more
> +# information.
> +#
> +# Since: 6.0
> +##
> +{ 'enum': 'YankInstanceType',
> +  'data': [ 'block-node', 'chardev', 'migration' ] }
> +

> +##
> +# @YankInstance:
> +#
> +# A yank instance can be yanked with the @yank qmp command to recover from a
> +# hanging QEMU.
> +#
> +# Currently implemented yank instances:
> +#  - nbd block device:
> +#    Yanking it will shut down the connection to the nbd server without
> +#    attempting to reconnect.

Mismatch in documentation; I presume it gets cleaned up later in the
series, in which case I can live with this patch as-is.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org