From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Jantzen Message-ID: <20020907221823.GL22569@maybe.net> Mime-Version: 1.0 Content-Disposition: inline Subject: [linux-lvm] md + lvm + reiser Sender: linux-lvm-admin@sistina.com Errors-To: linux-lvm-admin@sistina.com Reply-To: linux-lvm@sistina.com List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: Date: Sat Sep 7 17:18:22 2002 List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-lvm@sistina.com Excuse me if this has been covered already, though I did try to read through the archives. I am running md raid5 (software) over several drives and importing that into LVM and using reiserfs. It's worked fine for some time, but now I want to start snapshots. I've learned about the VFS lock patch, yes, but my real question is: why is the raid5 buffer cache constantly thrashing back and forth? I assume this has to do with a conflict between reiserfs's 4096 byte blocks and LVM's 512 SECTOR_SIZE. Or did I configure something wrong somewhere? Is it safe to just change SECTOR_SIZE in lvm.h or will that mess up on-disk structures? Thank you. -- chris jantzen kb7rnl =-> __O Insert witty comment here. _`\<,_ http://www.maybe.net/ (*)/ (*)