From: Jeff Layton Subject: Re: Default size of journal? Date: Mon, 11 Jan 2010 06:37:48 -0500 Message-ID: <4B4B0D8C.4030209@att.net> References: <4B4A26B6.805@att.net> <1D207FF6-B457-4DF3-B7B0-F4090EB8CED5@sun.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: linux-ext4@vger.kernel.org To: Andreas Dilger Return-path: Received: from smtp123.sbc.mail.re3.yahoo.com ([66.196.96.96]:35884 "HELO smtp123.sbc.mail.re3.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753255Ab0AKLoN (ORCPT ); Mon, 11 Jan 2010 06:44:13 -0500 In-Reply-To: <1D207FF6-B457-4DF3-B7B0-F4090EB8CED5@sun.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: Andreas Dilger wrote: > On 2010-01-10, at 15:12, Jeff Layton wrote: >> I'm sorry if this is a repeat, but I was wondering what the >> default journal size is for ext4 when it's built on a single >> partition? Or does it vary in size as needed? > > It varies with the size of the filesystem. I believe the largest > default size is 128MB, but I don't know offhand what the cutoff size is. Is there a simple formula for how the journal size varies with the file system size? Perhaps linear? Thanks! Jeff