From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46100) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Yg6BT-0002mm-0u for qemu-devel@nongnu.org; Thu, 09 Apr 2015 02:43:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Yg6BN-0003Xn-Tm for qemu-devel@nongnu.org; Thu, 09 Apr 2015 02:43:26 -0400 Received: from mx-v6.kamp.de ([2a02:248:0:51::16]:35223 helo=mx01.kamp.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Yg6BN-0003XY-I8 for qemu-devel@nongnu.org; Thu, 09 Apr 2015 02:43:21 -0400 Message-ID: <55261F83.6000902@kamp.de> Date: Thu, 09 Apr 2015 08:43:15 +0200 From: Peter Lieven MIME-Version: 1.0 References: <5522D4BD.7080805@kamp.de> <5522D57B.3000203@redhat.com> <5522D85D.20907@kamp.de> <5522DA21.1010702@kamp.de> <20150407084303.GA2298@work-vm> <5523F38A.4090305@kamp.de> <20150407152957.GB2287@work-vm> <55242597.1000700@kamp.de> <55243885.30906@redhat.com> In-Reply-To: <55243885.30906@redhat.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [Qemu-block] Migration sometimes fails with IDE and Qemu 2.2.1 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paolo Bonzini , "Dr. David Alan Gilbert" Cc: John Snow , "qemu-devel@nongnu.org" , qemu-block@nongnu.org Am 07.04.2015 um 22:05 schrieb Paolo Bonzini: > > 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. Right confirmed that the machines use BMDMA and the CDROM is hdc while the boot disk is hda. IDE driveres report as E-IDE Revision 7.0.0alpha2 Peter