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Re: [Qemu-block] [PATCH v3 04/14] block: Add blk_name_taken()

From: Kevin Wolf
Subject: Re: [Qemu-block] [PATCH v3 04/14] block: Add blk_name_taken()
Date: Wed, 17 Feb 2016 11:29:32 +0100
User-agent: Mutt/1.5.21 (2010-09-15)

Am 16.02.2016 um 19:08 hat Max Reitz geschrieben:
> There may be BlockBackends which are not returned by blk_by_name(), but
> do exist and have a name.

Really? And if so, isn't this a bug?

I expect that a BB is always either visible to the user and has a name
that is resolved to this BB everywhere, or it's entirely internal and
doesn't need a name therefore.

Having a BB that is internal and therefore invisble, but has a name and
prevents the creation of another BB or BDS with the same name, must
certainly be confusing for the user.

> blk_name_taken() allows testing whether a
> specific name is in use already, independent of whether the BlockBackend
> with that name is accessible through blk_by_name().
> Signed-off-by: Max Reitz <address@hidden>


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