From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Clements Subject: Re: [PATCH 008 of 8] md/bitmap: Change md/bitmap file handling to use bmap to file blocks. Date: Sat, 13 May 2006 11:29:32 -0400 Message-ID: <4465FB5C.6070808@steeleye.com> References: <20060512160121.7872.patches@notabene> <1060512060809.8099@suse.de> <20060512104750.0f5cb10a.akpm@osdl.org> <17509.22160.118149.49714@cse.unsw.edu.au> <20060512235934.4f609019.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20060512235934.4f609019.akpm@osdl.org> Sender: linux-raid-owner@vger.kernel.org To: Andrew Morton Cc: Neil Brown , linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-raid.ids Andrew Morton wrote: > The loss of pagecache coherency seems sad. I assume there's never a > requirement for userspace to read this file. Actually, there is. mdadm reads the bitmap file, so that would be broken. Also, it's just useful for a user to be able to read the bitmap (od -x, or similar) to figure out approximately how much more he's got to resync to get an array in-sync. Other than reading the bitmap file, I don't know of any way to determine that. -- Paul