From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45301) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fLXft-0008Af-FZ for qemu-devel@nongnu.org; Wed, 23 May 2018 13:35:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fLXfp-0006Du-IY for qemu-devel@nongnu.org; Wed, 23 May 2018 13:35:45 -0400 Received: from indium.canonical.com ([91.189.90.7]:51366) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fLXfp-0006Dd-C6 for qemu-devel@nongnu.org; Wed, 23 May 2018 13:35:41 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1fLXfn-0004VY-DI for ; Wed, 23 May 2018 17:35:39 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 6353F2E80CE for ; Wed, 23 May 2018 17:35:39 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Wed, 23 May 2018 17:30:26 -0000 From: Bruce Rogers Reply-To: Bug 1769189 <1769189@bugs.launchpad.net> Sender: bounces@canonical.com References: <152544791493.32626.6219738999075353422.malonedeb@gac.canonical.com> Message-Id: <152709662622.25254.17628763322832570415.malone@wampee.canonical.com> Errors-To: bounces@canonical.com Subject: [Qemu-devel] [Bug 1769189] Re: Issue with qemu 2.12.0 + SATA List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org I've tried bisecting a few times, but since my reproducer wasn't reliable enough, I didn't identify the issue. (I see a bisect reported on qemu ML which seems like a bogus result, similar to mine). In my case, after the "hang", Windows 10 resets the ahci device after 2 minutes and it continues on until another hang happens. Seems fairly random. I increased the number of vcpu's assigned which seemed to increase the likelihood of the hang. I also went so far as to instrument an injection of the ahci interrupt via the monitor (total kludge, I know), and the guest did get out of the hung condition right away when I did that. -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1769189 Title: Issue with qemu 2.12.0 + SATA Status in QEMU: New Bug description: [EDIT: I first thought that OVMF was the issue, but it turns out to be SATA] I had a Windows 10 VM running perfectly fine with a SATA drive, since I upgraded to qemu 2.12, the guests hangs for a couple of minutes, works for a few seconds, and hangs again, etc. By "hang" I mean it doesn't freeze, but it looks like it's waiting on IO or something, I can move the mouse but everything needing disk access is unresponsive. What doesn't work: qemu 2.12 with SATA What works: using VirIO-SCSI with qemu 2.12 or downgrading qemu to 2.11.1= and keep using SATA. Platform is arch linux 4.16.7 on skylake and Haswell, I have attached the vm xml file. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1769189/+subscriptions