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Date: Tue, 11 Mar 2008 23:55:52 -0500
From: Anthony Liguori <anthony@codemonkey.ws>
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Subject: Re: [Qemu-devel] [PATCH] Modify qemu-img to mount locally disk image
	using NBD (v2)
References: <E1JYh38-0001i2-V7@frecb07144> <47D70C23.9030808@bellard.org>
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To: qemu-devel@nongnu.org

Fabrice Bellard wrote:
> Laurent Vivier wrote:
>   
>> This patch is a new version of qemu-img using NBD device to mount Qemu
>> disk image.
>>
>> To not hang on UP system, it needs following patch:
>> http://article.gmane.org/gmane.linux.drivers.nbd.general/42
>> If you want to use loop to see partitions, you need this patch:
>> http://article.gmane.org/gmane.linux.kernel/651269
>> otherwise use kpartx (see kpartx package of your distro).
>>
>> This patch implements in qemu-img the client and the server of the nbd protocol.
>> Moreover, to avoid to specify a port to use, it creates a UNIX socket instead of
>> a INET socket.
>>
>> It adds two actions to qemu-img:
>> - bind, to bind a disk image to a NBD device,
>>
>>   qemu-img bind [-d] [-f fmt] device filename
>>
>>      ('-d' to daemonize)
>>
>> - unbind, to unbind it.
>>
>>   qemu-img unbind device
>> [...]
>>     
>
> Perhaps adding a new specialized tool would be better as there is no
> direct relation with qemu-img.
>   

I've been maintaining a separate tool for a while now (qemu-nbd) that 
uses the QEMU block driver code.  If there's interest in merging it, 
I'll happily submit patches.

Regards,

Anthony Liguori

> Fabrice.
>
>
>