From: "Martin K. Petersen" Subject: Re: [PATCH][RFC] resize2fs and uninit_bg questions Date: Fri, 18 Sep 2009 02:09:03 -0400 Message-ID: References: <20090916162457.GA84213@freezingfog.local> <20090916190831.GH2537@webber.adilger.int> <20090916204225.GB84213@freezingfog.local> <20090916212250.GL2537@webber.adilger.int> <20090916231131.GC84213@freezingfog.local> <4AB28DD5.30607@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Will Drewry , Andreas Dilger , linux-ext4@vger.kernel.org To: Ric Wheeler Return-path: Received: from acsinet11.oracle.com ([141.146.126.233]:31154 "EHLO acsinet11.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751645AbZIRGJV (ORCPT ); Fri, 18 Sep 2009 02:09:21 -0400 In-Reply-To: <4AB28DD5.30607@redhat.com> (Ric Wheeler's message of "Thu, 17 Sep 2009 15:28:21 -0400") Sender: linux-ext4-owner@vger.kernel.org List-ID: >>>>> "Ric" == Ric Wheeler writes: Ric> One note - the WRITE_SAME command in SCSI has long been used by Ric> array vendors to do relatively high performance zero fills. I've been working on WRITE SAME and UNMAP support recently (layering on top of Christoph's patch kit). It might be worthwhile to expose the WRITE SAME functionality further up the stack. It could also be helpful for initializing RAID disks, for instance... -- Martin K. Petersen Oracle Linux Engineering