From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexis Bruemmer Subject: Re: BUG in sas event handling mechanism??? Date: Fri, 22 Sep 2006 11:17:17 -0700 Message-ID: <1158949037.5718.3.camel@alexis> References: <20060922174046.GA18715@us.ibm.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from e3.ny.us.ibm.com ([32.97.182.143]:65453 "EHLO e3.ny.us.ibm.com") by vger.kernel.org with ESMTP id S964846AbWIVSR1 (ORCPT ); Fri, 22 Sep 2006 14:17:27 -0400 Received: from d01relay04.pok.ibm.com (d01relay04.pok.ibm.com [9.56.227.236]) by e3.ny.us.ibm.com (8.13.8/8.12.11) with ESMTP id k8MIHMc1023433 for ; Fri, 22 Sep 2006 14:17:22 -0400 Received: from d01av04.pok.ibm.com (d01av04.pok.ibm.com [9.56.224.64]) by d01relay04.pok.ibm.com (8.13.6/8.13.6/NCO v8.1.1) with ESMTP id k8MIHM9J225326 for ; Fri, 22 Sep 2006 14:17:22 -0400 Received: from d01av04.pok.ibm.com (loopback [127.0.0.1]) by d01av04.pok.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id k8MIHMOZ025563 for ; Fri, 22 Sep 2006 14:17:22 -0400 In-Reply-To: <20060922174046.GA18715@us.ibm.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: malahal@us.ibm.com Cc: linux-scsi@vger.kernel.org On Fri, 2006-09-22 at 10:40 -0700, malahal@us.ibm.com wrote: > I see a PORTE_BYTES_DMAED event, followed by a PHYE_LOSS_OF_SIGNAL event > and then followed by a PORTE_BYTES_DMAED event on the same phy. The code > seems to just drop the last event because of the not yet processed first > event. So, it just processes the first two events in that order. In > other words, the link doesn't get used at all! I am seeing a very similar issue with hot-plugging on the x260 systems with the internal expanders. If a disk is pulled and plugged back in right away then the PORTE_BROADCAST_RCVD event that was triggered when the disk is plugged back in is dropped, causing the disk to never be rediscovered. If there is enough of a delay between unplugging and plugging then both PORTE_BROADCAST_RCVD events are processed correctly. Any ideas on what would cause these events to be dropped? --Alexis > - > To unsubscribe from this list: send the line "unsubscribe linux-scsi" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html