From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48132) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YgEDZ-0001ha-Ko for qemu-devel@nongnu.org; Thu, 09 Apr 2015 11:18:15 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YgEDW-0006Ec-Sq for qemu-devel@nongnu.org; Thu, 09 Apr 2015 11:18:09 -0400 Message-ID: <55269823.5050904@redhat.com> Date: Thu, 09 Apr 2015 17:17:55 +0200 From: Paolo Bonzini 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> <20150407190112.GD2287@work-vm> <55267553.5000506@kamp.de> <20150409134339.GE2292@work-vm> <55269291.2000805@kamp.de> In-Reply-To: <55269291.2000805@kamp.de> Content-Type: text/plain; charset=windows-1252 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: Peter Lieven , "Dr. David Alan Gilbert" Cc: John Snow , "qemu-devel@nongnu.org" , qemu-block@nongnu.org On 09/04/2015 16:54, Peter Lieven wrote: > > #define BM_MIGRATION_COMPAT_STATUS_BITS \ > (IDE_RETRY_DMA | IDE_RETRY_PIO | \ > IDE_RETRY_READ | IDE_RETRY_FLUSH) > > Why is there no IDE_RETRY_WRITE ? Because that's represented by none of read and flush being set. :) > Honestly, I have not yet understood that that > BM_MIGRATION_COMPAT_STATUS_BITS is for. It's just for migrations while the VM is stopped due to I/O errors (rerror=stop/werror=stop). Paolo