From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id p651Hfba206627 for ; Mon, 4 Jul 2011 20:17:41 -0500 Received: from kaylee.flamingspork.com (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id CD4A923D5D for ; Mon, 4 Jul 2011 18:17:40 -0700 (PDT) Received: from kaylee.flamingspork.com (kaylee.flamingspork.com [74.207.245.61]) by cuda.sgi.com with ESMTP id dnKnaib0FIlITlNR for ; Mon, 04 Jul 2011 18:17:40 -0700 (PDT) From: Stewart Smith Subject: Re: [RFC] remove filestreams support? In-Reply-To: <20110704153443.GA21501@infradead.org> References: <20110704153443.GA21501@infradead.org> Date: Tue, 05 Jul 2011 11:17:46 +1000 Message-ID: <87sjqlbk5h.fsf@flamingspork.com> MIME-Version: 1.0 List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Christoph Hellwig , xfs@oss.sgi.com On Mon, 4 Jul 2011 11:34:43 -0400, Christoph Hellwig wrote: > I'd like to know if there are any people actively using the filestreams > support in XFS (-o filestreams). It's pretty much a fringe feature, and > I've not seen any user reports for it, while it never passes all its > XFSQA tests reliably. It was added specificly for CXFS media streaming > operations on one particular array model that hasn't been sold for a > long time. The feature purely is an in-memory one so unlike for example > the realtime device there are no issue about beeing able to read old > filesystems. The filestreams specific files are around 1500 lines of > code, not even counting the hooks in the core XFS codebase. I used it a bit on MythTV box to help circumvent the stupid behaviour of it fsync()ing every second[1] leading to poor file layout on disk. I found that filestreams worked a bit better than just setting allocsize mount option... but I wouldn't be screaming too much if it went away.... [1] which was to work around ext3 taking locks for so long that you'd then miss part of your TV program -- Stewart Smith _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs