Return-Path: Received: from mail-by2nam01on0097.outbound.protection.outlook.com ([104.47.34.97]:46352 "EHLO NAM01-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751270AbeEMOI0 (ORCPT ); Sun, 13 May 2018 10:08:26 -0400 From: Trond Myklebust To: "linux-nfs@vger.kernel.org" , "rmacklem@uoguelph.ca" Subject: Re: NFSv4.1 client recovery of opens after server crash/reboot Date: Sun, 13 May 2018 14:08:23 +0000 Message-ID: References: In-Reply-To: Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Sender: linux-nfs-owner@vger.kernel.org List-ID: T24gU3VuLCAyMDE4LTA1LTEzIGF0IDEyOjEyICswMDAwLCBSaWNrIE1hY2tsZW0gd3JvdGU6DQo+ IEkgd3JvdGU6DQo+ID4gSSBqdXN0IHJhbiBhIGxpdHRsZSB0ZXN0IG9mIGFuIE5GU3Y0LjEgc2Vy dmVyIChGcmVlQlNEKSByZWJvb3QNCj4gPiB3aGlsZSB0aGUgTGludXggY2xpZW50DQo+ID4gaGFk IHR3byBmaWxlcyBvcGVuIG92ZXIgYW4gTkZTdjQuMSBtb3VudCAobGludXgtNC4xNy1yYzIpLg0K PiA+IEl0IGJhc2ljYWxseSB3b3JrZWQsIGJ1dCB3aGVuIEkgbG9va2VkIGF0IHRoZSBwYWNrZXQg dHJhY2UgaW4NCj4gPiB3aXJlc2hhcmssIGl0IHdhc24ndCB3aGF0DQo+ID4gSSBleHBlY3RlZC4N Cj4gPiBUaGUgb3BlcmF0aW9ucyB3ZXJlIGJhc2ljYWxseToNCj4gPiAxIC0gRXhjaGFuZ2VJRA0K PiA+IDIgLSBDcmVhdGVTZXNzaW9uDQo+ID4gMyAtIFJlY2xhaW1Db21wbGV0ZQ0KPiA+IDQgLSBP cGVuL0NsYWltX0ZIIGRvbmUgdHdpY2UgdG8gcmVjbGFpbSB0aGUgT3BlbnMNCj4gPiANCj4gPiBU aGlzIHNlZW1zICJ1bnNhZmUiIHRvIG1lLCBzaW5jZSBJIHRoaW5rIGl0IHdvdWxkIGJlIHBvc3Np YmxlIGZvcg0KPiA+IGFub3RoZXIgY2xpZW50IHRvID5PcGVuIHRoZSBmaWxlIHdpdGggT1BFTl9E RU5ZX0JPVEggYmV0d2VlbiAjMyBhbmQNCj4gPiAjNCwgY2F1c2luZyAjNCB0byBmYWlsLg0KPiA+ IEkgd2FzIGV4cGVjdGluZyBzb21ldGhpbmcgbGlrZToNCj4gPiAxIC0gRXhjaGFuZ2VJRA0KPiA+ IDIgLSBDcmVhdGVTZXNzaW9uDQo+ID4gMyAtIE9wZW4vQ2xhaW1fcHJldmlvdXMgZG9uZSB0d2lj ZSB0byByZWNsYWltIHRoZSBPcGVucw0KPiA+IDQgLSBSZWNsYWltQ29tcGxldGUNCj4gDQo+IEkg Zm9yZ290IHRvIG1lbnRpb24gdGhhdCB0aGlzIGlzIHByb2JhYmx5IG5vdCBhIHNlcmlvdXMgaXNz dWUgcmlnaHQNCj4gbm93LCBzaW5jZSBtb3N0DQo+IGV4dGFudCBjbGllbnRzIChGcmVlQlNEIGFu ZCBMaW51eCBJIHRoaW5rPykgYWx3YXlzIGRvIE9wZW5zIHdpdGgNCj4gT1BFTl9TSEFSRV9ERU5Z X05PTkUuDQo+IFRoZSBvbmx5IGN1cnJlbnQgY2xpZW50IEkgYW0gYXdhcmUgb2YgdGhhdCBkb2Vz IE9QRU5fU0hBUkVfREVOWV94eA0KPiBvdGhlciB0aGFuDQo+IE5PTkUgaXMgdGhlIEVTWGkgNi41 IGNsaWVudC4gQnR3LCB0aGlzIGNsaWVudCBoYXMgc2VyaW91cyBpc3N1ZXMgdGhhdA0KPiBJIG1p Z2h0IHBvc3QgaGVyZSwgc28gdGhlIExpbnV4IHNlcnZlciBtYWludGFpbmVycyBhcmUgYXdhcmUg b2YgdGhlbS4NCj4gDQoNCkhpIFJpY2ssDQoNClRoZSBMaW51eCBjbGllbnQgd2lsbCBhdHRlbXB0 IHRvIHJlY2xhaW0gb3BlbnMgY29ycmVjdGx5IChpLmUuIGJlZm9yZQ0Kc2VuZGluZyBSRUNMQUlN X0NPTVBMRVRFKS4gSG93ZXZlciBpdCB3aWxsIG5vdCBhdHRlbXB0IHRvIHJlY2xhaW0gYW55DQps b2NrIHN0YXRlIGlmIHRoZSBzZXJ2ZXIgYWR2ZXJ0aXNlcyBhIGRpZmZlcmVudCBpZGVudGl0eSBh ZnRlciB0aGUNCnJlYm9vdCAoc2VlIFJGQzU2NjEsIHNlY3Rpb24gOC40LjIuMS4pLiBBcmUgeW91 IGNlcnRhaW4gdGhhdCB0aGUNCkZyZWVCU0Qgc2VydmVyIGlzIGFkdmVydGlzaW5nIHRoZSBzYW1l ICBlaXJfc2VydmVyX293bmVyIGFuZA0KZWlyX3NlcnZlcl9zY29wZSBmaWVsZHMgYWZ0ZXIgdGhl IHJlYm9vdD8NCg0KQ2hlZXJzDQogIFRyb25kDQotLSANClRyb25kIE15a2xlYnVzdA0KTGludXgg TkZTIGNsaWVudCBtYWludGFpbmVyLCBIYW1tZXJzcGFjZQ0KdHJvbmQubXlrbGVidXN0QGhhbW1l cnNwYWNlLmNvbQ0K