From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe - Profihost AG Subject: attempting task abort with block: remove artifical max_hw_sectors cap Date: Tue, 06 Jan 2015 12:16:35 +0100 Message-ID: <54ABC413.6090000@profihost.ag> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: Received: from mail-ph.de-nserver.de ([85.158.179.214]:55353 "EHLO mail-ph.de-nserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755003AbbAFLQh (ORCPT ); Tue, 6 Jan 2015 06:16:37 -0500 Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: linux-ide@vger.kernel.org Dear list, while testing 595b8ecd47e4dde64f704bf78d8c9b97e070ac67 ([PATCH] block: remove artifical max_hw_sectors cap), i came around a problem with some crucial m500 ssds direct attached. With the patch applied, i see the following max_sectors_kb value: # cat /sys/block/sdi/queue/max_sectors_kb 16383 But this results in the following error messages (at random time - most probably at high load): Write(10): 2a 00 04 f9 db f0 00 0c d8 00 scsi target0:0:7: handle(0x000a), sas_address(0x4433221107000000), phy(7) scsi target0:0:7: enclosure_logical_id(0x5003048016aee700), slot(5) sd 0:0:7:0: task abort: SUCCESS scmd(ffff88018c6b4700) sd 0:0:7:0: attempting task abort! scmd(ffff8807a12e6800) sd 0:0:7:0: [sdh] CDB: Read(10): 28 00 15 d4 f9 60 00 00 10 00 scsi target0:0:7: handle(0x000a), sas_address(0x4433221107000000), phy(7) scsi target0:0:7: enclosure_logical_id(0x5003048016aee700), slot(5) sd 0:0:7:0: task abort: SUCCESS scmd(ffff8807a12e6800) sd 0:0:7:0: attempting task abort! scmd(ffff88078d989800) sd 0:0:7:0: [sdh] CDB: Read(10): 28 00 15 aa d2 f9 00 00 20 00 Stefan