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Date: Tue, 07 Apr 2015 22:05:25 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] [Qemu-block] Migration sometimes fails with IDE
 and Qemu 2.2.1
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To: Peter Lieven <pl@kamp.de>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: John Snow <jsnow@redhat.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, qemu-block@nongnu.org



On 07/04/2015 20:44, Peter Lieven wrote:
> Has the cdrom the power of taking down the bus?

IDE can only issue one command per bus, so hda/hdb can take down each
other, and hdc/hdd can take down each other.  However, hda cannot take
down hdc and vice versa---so likely the CDROM cannot take down the hard
disk.

Paolo