Received: with ECARTIS (v1.0.0; list linux-xfs); Mon, 18 Apr 2005 00:33:23 -0700 (PDT) Received: from larry.melbourne.sgi.com (mverd138.asia.info.net [61.14.31.138]) by oss.sgi.com (8.13.0/8.13.0) with SMTP id j3I7XKER023686 for ; Mon, 18 Apr 2005 00:33:21 -0700 Received: from wobbly.melbourne.sgi.com (wobbly.melbourne.sgi.com [134.14.55.135]) by larry.melbourne.sgi.com (950413.SGI.8.6.12/950213.SGI.AUTOCF) via ESMTP id RAA08949; Mon, 18 Apr 2005 17:33:10 +1000 Received: from frodo.melbourne.sgi.com (root@frodo.melbourne.sgi.com [134.14.55.153]) by wobbly.melbourne.sgi.com (SGI-8.12.5/8.12.5) with ESMTP id j3I7X6kt452366; Mon, 18 Apr 2005 17:33:06 +1000 (EST) Received: from frodo.melbourne.sgi.com (nathans@localhost [127.0.0.1]) by frodo.melbourne.sgi.com (8.12.9/8.12.9/Debian-3) with ESMTP id j3I7Rp5J002232; Mon, 18 Apr 2005 17:27:51 +1000 Received: (from nathans@localhost) by frodo.melbourne.sgi.com (8.12.9/8.12.9/Debian-3) id j3I7RohK002230; Mon, 18 Apr 2005 17:27:50 +1000 Date: Mon, 18 Apr 2005 17:27:50 +1000 From: Nathan Scott To: KrishnaPradeep Tamma Cc: linux-xfs@oss.sgi.com Subject: Re: Check point block in log Message-ID: <20050418072750.GC2090@frodo> References: <2ca133d2050417195766346604@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2ca133d2050417195766346604@mail.gmail.com> User-Agent: Mutt/1.5.3i X-Virus-Scanned: ClamAV 0.83/836/Sun Apr 17 03:38:36 2005 on oss.sgi.com X-Virus-Status: Clean X-archive-position: 5316 X-ecartis-version: Ecartis v1.0.0 Sender: linux-xfs-bounce@oss.sgi.com Errors-to: linux-xfs-bounce@oss.sgi.com X-original-sender: nathans@sgi.com Precedence: bulk X-list: linux-xfs Content-Length: 351 Lines: 14 On Sun, Apr 17, 2005 at 09:57:58PM -0500, KrishnaPradeep Tamma wrote: > Hi, > > Does XFS write an explicit CHECK_POINT block in log or does it go > through the whole log during recovery? Hmm, neither of those really - it uses a binary chop type of algorithm to find the head and tail, and replays just that section of the log. cheers. -- Nathan