From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Hartmann Subject: Re: AMD-Vi IO_PAGE_FAULTs and ata3.00: failed command: READ FPDMA QUEUED errors since Linux 4.0 Date: Tue, 28 Jul 2015 20:20:48 +0200 Message-ID: <55B7C800.2070702@maya.org> References: <55B7BEA2.30205@01019freenet.de> <20150728175054.GB24782@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20150728175054.GB24782@redhat.com> Sender: linux-pci-owner@vger.kernel.org To: Mike Snitzer , Andreas Hartmann Cc: dm-devel@redhat.com, mpatocka@redhat.com, linux-pci List-Id: dm-devel.ids On 07/28/2015 at 07:50 PM, Mike Snitzer wrote: [..] > Are your SATA devcies using NCQ? Yes. It's enabled: dmesg| grep -i ncq ahci 0000:00:11.0: flags: 64bit ncq sntf ilck pm led clo pmp pio slum part ata2.00: 5860533168 sectors, multi 0: LBA48 NCQ (depth 31/32), AA ata3.00: 5860533168 sectors, multi 0: LBA48 NCQ (depth 31/32), AA ata1.00: 468862128 sectors, multi 16: LBA48 NCQ (depth 31/32), AA As the errors already come up on boot (during mount of partitions or even before the password for the disk has been provided): How can I disable NCQ during boot of the kernel? Is there a kernel option? I'm trying to apply your mentioned patches to 3.19 and report back. > > Please see this dm-devl thread (and this post in particular): > https://www.redhat.com/archives/dm-devel/2015-June/msg00005.html > Thanks, Andreas