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Re: [Qemu-block] [PATCH v2 01/21] qcow2: Add .bdrv_join_options callback

From: Alberto Garcia
Subject: Re: [Qemu-block] [PATCH v2 01/21] qcow2: Add .bdrv_join_options callback
Date: Mon, 30 Nov 2015 15:05:21 +0100
User-agent: Notmuch/0.13.2 (http://notmuchmail.org) Emacs/23.2.1 (i486-pc-linux-gnu)

On Mon 23 Nov 2015 04:59:40 PM CET, Kevin Wolf <address@hidden> wrote:
> qcow2 accepts a few driver-specific options that overlap semantically
> (e.g. "overlap-check" is an alias of "overlap-check.template", and any
> missing cache size option is derived from the given ones).
> When bdrv_reopen() merges the set of updated options with left out
> options that should be kept at their old value, we need to consider this
> and filter out any duplicates (which would generally cause errors
> because new and old value would contradict each other).
> This patch adds a .bdrv_join_options callback to BlockDriver and
> implements it for qcow2.
> Signed-off-by: Kevin Wolf <address@hidden>

Reviewed-by: Alberto Garcia <address@hidden>


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