From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Sun, 02 Dec 2007 14:31:14 -0800 (PST) Received: from larry.melbourne.sgi.com (larry.melbourne.sgi.com [134.14.52.130]) by oss.sgi.com (8.12.11.20060308/8.12.10/SuSE Linux 0.7) with SMTP id lB2MV6kc029272 for ; Sun, 2 Dec 2007 14:31:10 -0800 Date: Mon, 3 Dec 2007 09:31:05 +1100 From: David Chinner Subject: Re: ACL limit Message-ID: <20071202223105.GS119954183@sgi.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: xfs-bounce@oss.sgi.com Errors-to: xfs-bounce@oss.sgi.com List-Id: xfs To: Jan Engelhardt Cc: xfs@oss.sgi.com On Fri, Nov 30, 2007 at 07:07:26PM +0100, Jan Engelhardt wrote: > Hi, > > > is there any way to raise the number of ACLs that can be stored? The > current limit of 25 is quite tight, where ext3 allows 124 and jfs 8192. > Would increasing XFS_ACL_MAX_ENTRIES work (yes, using potentially more > memory), i.e. not interfering with the on-disk format? It would be an on disk format change - older kernels would error out (-EINVAL) on > 25 ACLs and not check any of them. Hence we'd probably need a superblock feature bit to indicate that >25 ACEs are supported in a given ACL. But we can work around that (superblock feature bit) and should be able to extend this out to ~8190 entries. We're doing an ACL rework ATM, so > 25 entry support should fall out of that.... Cheers, Dave. -- Dave Chinner Principal Engineer SGI Australian Software Group