From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay3.corp.sgi.com [198.149.34.15]) by oss.sgi.com (Postfix) with ESMTP id C97567F87 for ; Tue, 7 Apr 2015 23:50:00 -0500 (CDT) Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by relay3.corp.sgi.com (Postfix) with ESMTP id 43C36AC003 for ; Tue, 7 Apr 2015 21:50:00 -0700 (PDT) Received: from ipmail06.adl6.internode.on.net (ipmail06.adl6.internode.on.net [150.101.137.145]) by cuda.sgi.com with ESMTP id DMXBBfBunyoOyogC for ; Tue, 07 Apr 2015 21:49:58 -0700 (PDT) Date: Wed, 8 Apr 2015 14:49:55 +1000 From: Dave Chinner Subject: Re: XFS direct IO problem Message-ID: <20150408044955.GE15810@dastard> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: YeYin Cc: xfs T24gV2VkLCBBcHIgMDgsIDIwMTUgYXQgMTI6MjE6NDVQTSArMDgwMCwgWWVZaW4gd3JvdGU6Cj4g SGksIEFib3V0IDIgbW9udGhzIGFnbywgSSBhc2tlZCBvbmUgcHJvYmxlbSBpbiBYRlMsIHNlZQo+ IGhlcmUoaHR0cDovL29zcy5zZ2kuY29tL2FyY2hpdmVzL3hmcy8yMDE1LTAyL21zZzAwMTk3Lmh0 bWwpLgo+IAo+IAo+IEFmdGVyIHRoYXQsIEkgdXNlIGRpcmVjdCBJTyBpbiBNeVNRTCwgc2VlCj4g aGVyZShodHRwczovL2Rldi5teXNxbC5jb20vZG9jL3JlZm1hbi81LjUvZW4vaW5ub2RiLXBhcmFt ZXRlcnMuaHRtbCNzeXN2YXJfaW5ub2RiX2ZsdXNoX21ldGhvZCku4oCNCj4gCj4gCj4gSG93ZXZl ciwgSSBmb3VuZCB0aGF0IE15U1FMIHBlcmZvcm1hbmNlIGlzIHN0aWxsIHBvb3Igc29tZXRpbWVz LiBJCj4gdXNlIHNvbWUgdG9vbHMoaHR0cHM6Ly9naXRodWIuY29tL2JyZW5kYW5ncmVnZy9wZXJm LXRvb2xz4oCNKSB0bwo+IHRyYWNlIHRoZSBrZXJuZWwsIEkgZm91bmQgc29tZSBwcm9ibGVtczoK CjxzbmlwPgoKPiBUaGlzIHdpbGwgY2F1c2UgYmFkIHBlcmZvcm1hbmNlLCBldmVuIGRpcmVjdCBJ Ty4gSSBzdGlsbCBkb24ndAo+IHVuZGVyc3RhbmQgd2h5IG5vdCB0cnVuY2F0ZV9pbm9kZV9wYWdl IGNhbGxlZD8KCkJlY2F1c2UgdGhlIGNhY2hlZCBwYWdlIG11c3QgYmUgb3V0c2lkZSB0aGUgcmFu Z2Ugb2YgdGhlIGRpcmVjdCBJTwp0aGF0IGlzIGluIHByb2dyZXNzIC0gZGlyZWN0IElPIG9ubHkg dHJpZXMgdG8gZmx1c2ggcGFnZXMgb3ZlciB0aGUKcmFuZ2UgaXQgaXMgZG9pbmcgdGhlIElPIG92 ZXIuCgo+IEV2ZXJ5IHRpbWUsIGFmdGVyIEkgcnVuIHRoaXM6IGVjaG8gMSA+IC9wcm9jL3N5cy92 bS9kcm9wX2NhY2hlcwo+IAo+IEltbWVkaWF0ZWx5IGVuaGFuY2UgcGVyZm9ybWFuY2UuCgpCZWNh dXNlIHRoYXQgZmx1c2hlcyB3aGF0ZXZlciBwYWdlIGlzIGluIHRoZSBjYWNoZS4gQ2FuIHlvdSBp ZGVudGlmeQp3aGF0IG9mZnNldCB0aGF0IGNhY2hlZCBwYWdlIGlzIGF0PyBUcmFjaW5nIHRoZSB4 ZnMgZXZlbnRzIHdpbGwgdGVsbAp5b3Ugd2hhdCBwYWdlcyB0aGF0IG9wZXJhdGlvbiBpbnZhbGlk YXRlcyBvbiBlYWNoIGlub2RlLCBhbmQga25vd2luZwp0aGUgb2Zmc2V0IG1heSB0ZWxsIHVzIHdo eSB0aGF0IHBhZ2UgaXMgbm90IGdldHRpbmcgZmx1c2hlZC4KCkFsdGVybmF0aXZlbHksIHdyaXRl IGEgc2ltcGxlIEMgcHJvZ3JhbSB0aGF0IGRlb21uc3RyYXRlcyB0aGUgc2FtZQpwcm9ibGVtIHNv IHdlIGNhbiByZXByb2R1Y2UgaXQgZWFzaWx5LCBmaXggdGhlIHByb2JsZW0gYW5kIHR1cm4gaXQK aW50byBhIHJlZ3Jlc3Npb24gdGVzdC4uLi4KCkNoZWVycywKCkRhdmUuCi0tIApEYXZlIENoaW5u ZXIKZGF2aWRAZnJvbW9yYml0LmNvbQoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KeGZzIG1haWxpbmcgbGlzdAp4ZnNAb3NzLnNnaS5jb20KaHR0cDovL29z cy5zZ2kuY29tL21haWxtYW4vbGlzdGluZm8veGZzCg==