From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Schlichter Subject: Re: Processes receive SIGSEGV if TCQ is enabled Date: Fri, 31 Oct 2003 08:28:33 +0100 Sender: linux-ide-owner@vger.kernel.org Message-ID: <200310310828.41598.schlicht@uni-mannheim.de> References: <200310301601.55588.schlicht@uni-mannheim.de> <3FA1943A.7010300@cornell.edu> <3FA1A171.3040807@cyberone.com.au> Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg=pgp-sha1; boundary="Boundary-02=_p8go/CmIP8D38GM"; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Return-path: Received: from rumms.uni-mannheim.de ([134.155.50.52]:36035 "EHLO rumms.uni-mannheim.de") by vger.kernel.org with ESMTP id S263051AbTJaH3C (ORCPT ); Fri, 31 Oct 2003 02:29:02 -0500 In-Reply-To: <3FA1A171.3040807@cyberone.com.au> List-Id: linux-ide@vger.kernel.org To: Nick Piggin , Ivan Gyurdiev Cc: Andrew Morton , B.Zolnierkiewicz@elka.pw.edu.pl, linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org --Boundary-02=_p8go/CmIP8D38GM Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hi, On Friday 31 October 2003 00:40, Nick Piggin wrote: > Hi, > If you're testing IDE TCQ, please try the following patch and use the > default io scheduler. It won't fix anything, but it poisons requests > so we can sometimes tell if they are being used in the wrong places. > I have seen warnings that lead me to believe this might be happening. > Its against 2.6.0-test9-mm1. Report any stack traces you see. Thanks. OK, I tested 2.6.0-test9-mm1 + your patch, but it seems not to print any=20 messages or stack traces, even if many processes are killed after setting T= CQ=20 depth to 1. Today, however, I got reiserfs corruption messages in the logs, but=20 fsck.reiserfs could not find any corruption on the next boot, so I think th= is=20 is not a real corruption but just reading the wrong data... The messages are something like: Oct 31 07:57:53 bigboss kernel: is_tree_node: node level 2120 does not matc= h=20 to the expected one 1 Oct 31 07:57:53 bigboss kernel: vs-5150: search_by_key: invalid format foun= d=20 in block 642544. Fsck? Oct 31 07:57:53 bigboss kernel: vs-13070: reiserfs_read_locked_inode: i/o=20 failure occurred trying to find stat data of [4767268 4767269 0x0 SD] Oct 31 07:57:53 bigboss kernel: is_tree_node: node level 2120 does not matc= h=20 to the expected one 1 Oct 31 07:57:53 bigboss kernel: vs-5150: search_by_key: invalid format foun= d=20 in block 642544. Fsck? Oct 31 07:57:53 bigboss kernel: vs-13070: reiserfs_read_locked_inode: i/o=20 failure occurred trying to find stat data of [4767268 4767269 0x0 SD] > Nick Thomas --Boundary-02=_p8go/CmIP8D38GM Content-Type: application/pgp-signature Content-Description: signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQA/og8pYAiN+WRIZzQRAjU9AKDWqZ9uHgvlRB5wup+92aWgHkC8ygCgv2Wf l48zXb3Z5NmOROg9LtNRLQ8= =TrB2 -----END PGP SIGNATURE----- --Boundary-02=_p8go/CmIP8D38GM--