Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933059AbWLAHIF (ORCPT ); Fri, 1 Dec 2006 02:08:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933336AbWLAHIF (ORCPT ); Fri, 1 Dec 2006 02:08:05 -0500 Received: from nz-out-0506.google.com ([64.233.162.228]:10448 "EHLO nz-out-0102.google.com") by vger.kernel.org with ESMTP id S933059AbWLAHIC (ORCPT ); Fri, 1 Dec 2006 02:08:02 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:user-agent:mime-version:to:cc:subject:references:in-reply-to:x-enigmail-version:content-type:content-transfer-encoding; b=TKd0BnqSClKpmUOAJhxGQhTg1KPBkjhY5svoQ3K3YBf0jUCxXp5F80VrnwutQrsdUNju9apNuTZirXizmS1eyw1iZERFIjejzR+qommPWvz6sA8PFA04Nid+vYmJVeqdQbdXvoUg46Vl8JKzrAxnCMLUJ+PAR880N5MLpdXYg5w= Message-ID: <456FD4CB.8020608@gmail.com> Date: Fri, 01 Dec 2006 16:07:55 +0900 From: Tejun Heo User-Agent: Icedove 1.5.0.8 (X11/20061116) MIME-Version: 1.0 To: "Berck E. Nash" CC: "linux-kernel@vger.kernel.org" , "linux-ide@vger.kernel.org" Subject: Re: 2.6.18 - AHCI detection pauses excessively 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> In-Reply-To: <456DD70D.1050808@gmail.com> X-Enigmail-Version: 0.94.0.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2043 Lines: 38 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/