Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755227AbbFOLBM (ORCPT ); Mon, 15 Jun 2015 07:01:12 -0400 Received: from mail-wi0-f174.google.com ([209.85.212.174]:38446 "EHLO mail-wi0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754109AbbFOLBE convert rfc822-to-8bit (ORCPT ); Mon, 15 Jun 2015 07:01:04 -0400 MIME-Version: 1.0 In-Reply-To: <20150615100156.GL5660@c203.arch.suse.de> References: <1434102153-38581-1-git-send-email-Sreekanth.Reddy@avagotech.com> <1434102153-38581-15-git-send-email-Sreekanth.Reddy@avagotech.com> <20150615100156.GL5660@c203.arch.suse.de> Date: Mon, 15 Jun 2015 16:31:02 +0530 Message-ID: Subject: Re: [PATCH 14/20] [SCSI] mpt3sas: Complete the SCSI command with DID_RESET status for log_info value 0x0x32010081 From: Sreekanth Reddy To: Johannes Thumshirn Cc: "jejb@kernel.org" , Christoph Hellwig , "Martin K. Petersen" , "linux-scsi@vger.kernel.org" , "James E.J. Bottomley" , Sathya Prakash , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2859 Lines: 73 On Mon, Jun 15, 2015 at 3:31 PM, Johannes Thumshirn wrote: > On Fri, Jun 12, 2015 at 03:12:26PM +0530, Sreekanth Reddy wrote: >> For any SCSI command, if the driver receives >> IOC status = SCSI_IOC_TERMINATED and log info = 0x32010081 then >> that command will be completed with DID_RESET host status. >> >> The definition of this log info value is >> "Virtual IO has failed and has to be retried". >> >> Firmware will provide this log info value with IOC Status >> "SCSI_IOC_TERMINATED", whenever a drive (with is a part of a volume) >> is pulled and pushed back within some minimal delay. >> With this log info value, firmware informs the driver to retry the >> failed IO command infinite times, so to provide some time for the >> firmware to discover the reinserted drive successfully instated of >> just retrying failed command for five times(doesn't giving enough >> time for firmware to complete the drive discovery) and failing the >> IO permanently even though drive came back successfully. >> >> Signed-off-by: Sreekanth Reddy >> --- >> drivers/scsi/mpt3sas/mpt3sas_scsih.c | 3 +++ >> 1 file changed, 3 insertions(+) >> >> diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c >> index 64dd90b..837c22a 100644 >> --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c >> +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c >> @@ -4241,6 +4241,9 @@ _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply) >> scmd->device->expecting_cc_ua = 1; >> } >> break; >> + } else if (log_info == 0x32010081) { >> + scmd->result = DID_RESET << 16; >> + break; > > Could you make that a #define instead of some magic vlaue, so everyone can see > what is happening when reading the source? Sure, I will define a macro for this log_info value. Thanks, Sreekanth > >> } >> scmd->result = DID_SOFT_ERROR << 16; >> break; >> -- >> 2.0.2 >> >> -- >> 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 > > -- > Johannes Thumshirn Storage > jthumshirn@suse.de +49 911 74053 689 > SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg > GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton > HRB 21284 (AG Nürnberg) -- Regards, Sreekanth -- 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/