From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: linux-nfs-owner@vger.kernel.org Received: from mx2.netapp.com ([216.240.18.37]:54068 "EHLO mx2.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755553Ab2GBV7x (ORCPT ); Mon, 2 Jul 2012 17:59:53 -0400 From: "Myklebust, Trond" To: "Charles 'Boyo" CC: Chuck Lever , "linux-nfs@vger.kernel.org" Subject: Re: Linux NFSv4 client uses returned delegation in subsequent READ resulting in hang (BAD_STATEID) Date: Mon, 2 Jul 2012 21:59:51 +0000 Message-ID: <1341266386.8197.61.camel@lade.trondhjem.org> References: <2E097766-1FA2-42E1-B790-B3BBC254B705@oracle.com> <2F725B49-A089-41E9-BBC9-11B889A62C9D@oracle.com> <1341263584.8197.53.camel@lade.trondhjem.org> <6C5408EB-668A-43C9-B3FE-9D66427B5BE0@oracle.com> In-Reply-To: Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Sender: linux-nfs-owner@vger.kernel.org List-ID: T24gTW9uLCAyMDEyLTA3LTAyIGF0IDIyOjUwICswMTAwLCBDaGFybGVzICdCb3lvIHdyb3RlOg0K PiBPbiBNb24sIEp1bCAyLCAyMDEyIGF0IDEwOjE5IFBNLCBDaHVjayBMZXZlciA8Y2h1Y2subGV2 ZXJAb3JhY2xlLmNvbT4gd3JvdGU6DQo+ID4NCj4gPiBPbiBKdWwgMiwgMjAxMiwgYXQgNToxMyBQ TSwgTXlrbGVidXN0LCBUcm9uZCB3cm90ZToNCj4gPg0KPiA+PiBPbiBNb24sIDIwMTItMDctMDIg YXQgMTY6MzUgLTA0MDAsIENodWNrIExldmVyIHdyb3RlOg0KPiA+Pj4gT24gSnVsIDIsIDIwMTIs IGF0IDQ6MjIgUE0sIENoYXJsZXMgJ0JveW8gd3JvdGU6DQo+ID4+Pg0KPiA+Pj4+IE9uIE1vbiwg SnVsIDIsIDIwMTIgYXQgMzowOSBQTSwgQ2h1Y2sgTGV2ZXIgPGNodWNrLmxldmVyQG9yYWNsZS5j b20+IHdyb3RlOg0KPiA+Pj4+Pg0KPiA+Pj4+PiBVc3VhbGx5IHdlIHNlZSB0aGlzIGJlaGF2aW9y IGJlY2F1c2Ugb2YgYSByYWNlIGJldHdlZW4gYW4gT1BFTiB3aXRoIGRlbGVnYXRpb24gYW5kIGEg ZGVsZWdhdGlvbiByZWNhbGwuICBJbiB0aGlzIGNhc2UsIGhvd2V2ZXIsIHRoZSBjbGllbnQgaXMg YWN0aXZlbHkgcmV0dXJuaW5nIGEgUkVBRA0KPiA+Pj4+PiBkZWxlZ2F0aW9uLCB0aGVuIHByb2Nl ZWRpbmcgdG8gdXNlIGl0IGFueXdheS4gIEkgZG9uJ3Qgc2VlIHRoZSBzZXJ2ZXIncyByZWNhbGwg Y2FsbGJhY2ssIHRob3VnaCwgYW5kIHRoZXJlIGFyZSBvdGhlciBpbmRpY2F0aW9ucyB0aGF0IHRo aXMgdHJhY2UgaXMgbm90IGNvbXBsZXRlLiBTbyBpdCdzIGhhcmQNCj4gPj4+Pj4gdG8gYmUgMTAw JSBjb25maWRlbnQuDQo+ID4+Pj4+DQo+ID4+Pj4gVGhlIHRyYWNlIGlzIG5vdCBjb21wbGV0ZSwg aXQgaW5jbHVkZXMganVzdCBlbm91Z2ggaW5mb3JtYXRpb24gdG8NCj4gPj4+PiBleHBsYWluIHRo ZSBwcm9ibGVtLg0KPiA+Pj4+IEhvd2V2ZXIgSSBjYW4gY29uZmlybSB0aGUgc2VydmljZSBkaWQg bm90IHNlbmQgYSByZWNhbGwgY2FsbGJhY2ssIHRoZQ0KPiA+Pj4+IGNsaWVudCByZXR1cm5lZCB0 aGUgZGVsZWdhdGlvbiBvZiBpdHMgb3duICJmcmVlIHdpbGwiLg0KPiA+Pj4NCj4gPj4+IFRoZSBj YWxsYmFjayB3b3VsZCBjb21lIG9uIGEgc2VwYXJhdGUgVENQIGNvbm5lY3Rpb24uICBJIGNhbid0 IHRoaW5rIG9mIGEgcmVhc29uIHRoYXQgYSBjbGllbnQgd291bGQgcmV0dXJuIGEgZGVsZWdhdGlv biBieSBpdHNlbGYgYW5kIHRoZW4gc3Vic2VxdWVudGx5IHN0YXJ0IHRvIHVzZSBpdC4NCj4gPj4N Cj4gPj4gSSBjYW46IHRoZXJlIGFyZSBhIG51bWJlciBvZiBzZXJ2ZXJzIG91dCB0aGVyZSB0aGF0 IHZpb2xhdGUgdGhlIHNwZWMgYnkNCj4gPj4gcmV0dXJuaW5nIGEgZGVsZWdhdGlvbiBhcyBwYXJ0 IG9mIGFuIE9QRU4oQ0xBSU1fREVMRUdBVEVfQ1VSKS4gVXN1YWxseQ0KPiA+PiB0aG9zZSBicm9r ZW4gc2VydmVycyB3aWxsIHNlbmQgdGhlIGV4YWN0IHNhbWUgc3RhdGVpZCBhcyB0aGUgZGVsZWdh dGlvbg0KPiA+PiB0aGF0IGlzIGJlaW5nIHJldHVybmVkLg0KPiA+DQo+ID4gVGhlIE9QRU4gaW4g ZnJhbWUgNyBpcyBhIENMQUlNX05VTEwgT1BFTiwgaXNuJ3QgaXQ/DQo+ID4NCj4gVGhlIE9QRU4g aW4gdGhpcyBjYXNlIGlzIGEgQ0xBSU1fTlVMTCBhbmQgSSBoYXZlIHJlLWV4YW1pbmVkIG15DQo+ IG5ldHdvcmsgZHVtcCwgdGhlcmUgd2FzIG5vIGNhbGwgYmFjayBmcm9tIHRoZSBzZXJ2ZXIuDQo+ IFNvIHdoeSB3b3VsZCB0aGUgY2xpZW50IHJldHVybnMgYSBkZWxlZ2F0aW9uIHZvbHVudGFyaWx5 IGFuZCB0aGVuIHJlLXVzZSBpdD8NCj4gDQo+ID4+Pj4gSXMgaXQgcG9zc2libGUgaXMgYSBzY2hl ZHVsaW5nIGlzc3VlIG9mIHNvbWUgc29ydCwgd2hlcmUgdGhlIFJFQUQNCj4gPj4+PiBzaG91bGQg aGF2ZSBiZWVuIHNlbnQgYWhlYWQgb2YgdGhlIERFTEVHUkVUVVJOIGJ1dCBzb21laG93IGdvdCBt aXhlZA0KPiA+Pj4+IHVwPw0KPiANCj4gPj4+IE9yIHBvc3NpYmx5IHRoYXQgdGhlIERFTEVHUkVU VVJOIGRvZXNuJ3QgYWN0dWFsbHkgcmVtb3ZlIHRoZSBkZWxlZ2F0aW9uIHN0YXRlIElEIHVudGls IHRoZSBzZXJ2ZXIgaGFzIHJlcGxpZWQsIGFuZCB0aGUgUkVBRCByZXF1ZXN0IHdhcyBzZW50IGJl Zm9yZSB0aGUgREVMRUdSRVRVUk4NCj4gPj4+IHJlcGx5IGFycml2ZWQgYXQgdGhlIGNsaWVudC4N Cj4gDQo+IEluZGVlZCwgdGhlIFJFQUQgd2FzIGlzc3VlZCBhZnRlciB0aGUgREVMRUdSRVRVUk4g YnV0IGJlZm9yZSB0aGUNCj4gcmVzcG9uc2UgdG8gaXQuIElzIGl0IHBvc3NpYmxlIHRvIGNoZWNr IGlmIHRoaXMgaXMgZXhwZWN0ZWQgYmVoYXZpb3I/DQoNClRoYXQgaXMgZXhwZWN0ZWQgYmVoYXZp b3VyLiBXZSBkb24ndCBzZXJpYWxpc2UgUkVBRCBhbmQgREVMRUdSRVRVUk4uDQoNCldoYXQgaXNu J3QgZXhwZWN0ZWQgYmVoYXZpb3VyIGlzIGZvciB0aGUgY2xpZW50IHRvIERFTEVHUkVUVVJODQpp bW1lZGlhdGVseSB1cG9uIHJlY2VpdmluZyB0aGUgZGVsZWdhdGlvbi4gTm9yIGlzIGl0IGV4cGVj dGVkIHRoYXQgdGhlDQpSRUFEIHdvdWxkIGZhaWwgdG8gcmVjb3ZlciBpbiBhbiBvcmRpbmFyeSBE RUxFR1JFVFVSTiBzaXR1YXRpb24uDQoNClRoaXMgaXMgd2h5IEknbSBpbnRlcmVzdGVkIGluIHNl ZWluZyB3aGF0IGhhcHBlbmVkIGJlZm9yZSB0aGUgT1BFTi4NCg0KLS0gDQpUcm9uZCBNeWtsZWJ1 c3QNCkxpbnV4IE5GUyBjbGllbnQgbWFpbnRhaW5lcg0KDQpOZXRBcHANClRyb25kLk15a2xlYnVz dEBuZXRhcHAuY29tDQp3d3cubmV0YXBwLmNvbQ0KDQo=