From mboxrd@z Thu Jan 1 00:00:00 1970 From: Srinivasa S Subject: a minor query - please help Date: Thu, 23 Dec 2004 12:34:51 +0530 Message-ID: <8f8a519404122223042106571b@mail.gmail.com> Reply-To: Srinivasa S Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids I have configured a 3 disk raid5 on my linux system (fedora core 1 running 2.6.5-1.358 OS). I am basically trying to alter the RMW method a bit, which I think might improve performance. Multiple writes come to a stripe at the same time. Here is the output of the debug stmts I've put in raid5.c code: ----- Dec 23 11:16:01 raider kernel: check 2: state 0x4 read 00000000 write 2456be00 written 00000000 Dec 23 11:16:02 raider kernel: check 1: state 0x1 read 00000000 write 00000000 written 00000000 Dec 23 11:16:02 raider kernel: check 0: state 0x4 read 00000000 write 41fc8440 written 00000000 Dec 23 11:16:02 raider kernel: locked=0 uptodate=1 to_read=0 to_write=2 failed=0 failed_num=0 ----- Is there any method by which I can make only one write go through at a time? I'd be glad if any of you could reply to this... Regards, Srinivasa S