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Re: [Qemu-block] [PATCH v6 19/25] block: Add BlockDriver.bdrv_gather_chi


From: Alberto Garcia
Subject: Re: [Qemu-block] [PATCH v6 19/25] block: Add BlockDriver.bdrv_gather_child_options
Date: Wed, 08 Nov 2017 14:29:52 +0100
User-agent: Notmuch/0.18.2 (http://notmuchmail.org) Emacs/24.4.1 (i586-pc-linux-gnu)

On Fri 29 Sep 2017 06:53:41 PM CEST, Max Reitz wrote:
> Some follow-up patches will rework the way bs->full_open_options is
> refreshed in bdrv_refresh_filename(). The new implementation will remove
> the need for the block drivers' bdrv_refresh_filename() implementations
> to set bs->full_open_options; instead, it will be generic and use static
> information from each block driver.
>
> However, by implementing bdrv_gather_child_options(), block drivers will
> still be able to override the way the full_open_options of their
> children are incorporated into their own.
>
> We need to implement this function for VMDK because we have to prevent
> the generic implementation from gathering the options of all children:
> It is not possible to specify options for the extents through the
> runtime options.
>
> For quorum, the child names that would be used by the generic
> implementation and the ones that we actually want to use differ. See
> quorum_gather_child_options() for more information.
>
> Signed-off-by: Max Reitz <address@hidden>

Reviewed-by: Alberto Garcia <address@hidden>

Berto



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