Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI

[Paolo Bonzini]

On 09/15/2011 02:34 PM, Orit Wasserman wrote:
> > >  Then you need an iSCSI*target*  that understands qcow2, like qemu-nbd
> > >  but for iSCSI... that's exactly the thing you were worried about
> > >  implementing.
>
> Not really , this is just part of the target configuration.
> For each file in the chain we create a lun in the target that is backed
> by the file and we number the luns in chronological order (base is lun
> 1) . you can look at a tgtd configuration here
> http://wiki.qemu.org/Features/LiveBlockMigration#Example_single_base_master_image.

That's surely a weird way to use iSCSI. :)

It's clever, but I would call that shared storage, since you need to 
share the details of the snapshot chain between the source and 
destination, down to the file names.  We need a more precise nomenclature.

Paolo