From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: 2.6.18 - AHCI detection pauses excessively Date: Fri, 01 Dec 2006 16:07:55 +0900 Message-ID: <456FD4CB.8020608@gmail.com> References: <4557B7D2.2050004@gmail.com> <455B0BD7.20108@gmail.com> <455B5ADF.2040503@gmail.com> <20061127033550.GB11250@htj.dyndns.org> <456AA89C.909@gmail.com> <456D4B17.4080503@gmail.com> <456DD70D.1050808@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from nz-out-0506.google.com ([64.233.162.227]:13008 "EHLO nz-out-0102.google.com") by vger.kernel.org with ESMTP id S933073AbWLAHIC (ORCPT ); Fri, 1 Dec 2006 02:08:02 -0500 Received: by nz-out-0102.google.com with SMTP id s1so1491399nze for ; Thu, 30 Nov 2006 23:08:01 -0800 (PST) In-Reply-To: <456DD70D.1050808@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: "Berck E. Nash" Cc: "linux-kernel@vger.kernel.org" , "linux-ide@vger.kernel.org" Berck E. Nash wrote: > [ 68.242305] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300) > [ 98.221334] ata2.00: qc timeout (cmd 0xec) > [ 98.225467] ata2.00: failed to IDENTIFY (I/O error, err_mask=0x104) > [ 108.063137] ata2: port is slow to respond, please be patient (Status 0x80) > [ 131.003980] ata2: port failed to respond (30 secs, Status 0x80) > [ 131.009930] ata2: COMRESET failed (device not ready) > [ 131.014926] ata2: hardreset failed, retrying in 5 secs > [ 138.308717] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300) > [ 138.319554] ata2.00: ATA-6, max UDMA/133, 640 sectors: LBA > [ 138.325157] ata2.00: ata2: dev 0 multi count 1 > [ 138.334245] ata2.00: configured for UDMA/133 [--snip--] > [ 143.191590] scsi 2:0:0:0: Direct-Access ATA Config Disk RGL1 PQ: 0 ANSI: 5 > [ 143.199761] SCSI device sdd: 640 512-byte hdwr sectors (0 MB) > [ 143.205550] sdd: Write Protect is off > [ 143.209257] SCSI device sdd: write cache: disabled, read cache: enabled, doesn't support DPO or FUA > [ 143.218356] SCSI device sdd: 640 512-byte hdwr sectors (0 MB) > [ 143.224143] sdd: Write Protect is off > [ 143.227847] SCSI device sdd: write cache: disabled, read cache: enabled, doesn't support DPO or FUA > [ 143.236927] sdd: unknown partition table > [ 143.241194] sd 2:0:0:0: Attached scsi disk sdd > [ 143.245707] sd 2:0:0:0: Attached scsi generic sg3 type 0 Ahh.. I can't believe I missed this again. A Port Multiplier is attached to your ata2 which is probably a sil3726 or 4726. Why this device fails initial reset is unknown yet. Anyways, with proper PMP support, this problem will go away. So, this isn't really a ahci issue and there's nothing wrong with your disks either. I'll ask SIMG why this happens with the PMP. -- tejun