From mboxrd@z Thu Jan  1 00:00:00 1970
From: Olaf Hering <olaf@aepfle.de>
Subject: incorrect disk numbering with qemu
Date: Wed, 15 Jan 2014 18:12:44 +0100
Message-ID: <20140115171244.GA2596@aepfle.de>
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Cc: Anthony Perard <anthony.perard@citrix.com>, Ian Campbell <Ian.Campbell@citrix.com>, Stefano Stabellini <stefano.stabellini@eu.citrix.com>
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It seems qemu does not enumerate the configured disks correctly with a
config like this:

disk=[  
        'raw:/some.iso,hda:cdrom,r',
        'raw:/some.raw,xvda,w',
]

With a PV guest it works fine, the guest has a hda and xvda device. 
But a HVM guest fails to start:
qemu-system-i386: -drive file=/some.raw,if=ide,index=0,media=disk,format=raw,cache=writeback: drive with bus=0, unit=0 (index=0) exists

I think that kind of config used to work with xend. Should the code which
enumerates the disks be smarter?

Olaf

-- 
name="enum"
memory=1024
disk=[  
        'file:/some.iso,hda:cdrom,r',
        'raw:/some.raw,xvda,r',
]
vif=[ 'mac=00:16:3e:14:85:06,bridge=br0', ]
vfb=['type=vnc,vncunused=1,keymap=de']
builder="linux"
extra="ignore_loglevel xencons=hvc0 console=hvc0"
kernel="/vmlinuz"
ramdisk="/initrd"

builder="hvm"