From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joe Thornber <thornber@redhat.com>
Date: Tue, 13 Sep 2011 16:01:55 +0100
Subject: [PATCH] Retry dm device removal if busy
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 <4E6F6ECE.4070700@redhat.com>
Message-ID: <20110913150154.GA6342@ubuntu>
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On Tue, Sep 13, 2011 at 04:55:10PM +0200, Milan Broz wrote:
> Before anyone start to complain:
> 
> we spent incredible amount of time with fixing the unfixable,
> 
> I really prefer make it to work despite it is not 100% correct.
> It is ugly but it will allow us to fix another things and not
> waste time here for now.
> 
> This approach is already used in cryptsetup, mdadm and perhaps
> other similar packages.

I've resorted to doing exactly this in the thin test suite.

- Joe