From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AE6A9C4727E for ; Thu, 1 Oct 2020 19:29:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 52934206C9 for ; Thu, 1 Oct 2020 19:29:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=hammerspace.com header.i=@hammerspace.com header.b="dLO7J/9t" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730017AbgJAT3y (ORCPT ); Thu, 1 Oct 2020 15:29:54 -0400 Received: from mail-bn8nam12on2134.outbound.protection.outlook.com ([40.107.237.134]:6477 "EHLO NAM12-BN8-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729993AbgJAT3y (ORCPT ); Thu, 1 Oct 2020 15:29:54 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=EAeHfkYVtnGcZKL6nuQ7zLG3UP0PgfeGqAloI7ixQiihb0s/XBB7mGkKex4QIR5pCShMmNWG4ehbO2hYsKlnCc9KH5kVXit5i9R3GNkUkP146fzJ5m5+BP3mqPDdfz2bIIrlzOHMkr4KoR0MPkhVtAVO/cLECbD4aOga90fUjj9bPWoblC28P6QNZQ0FtBtijx1nlWdl5HPwAmCIkNZ7k2dQ3ilAno5p5DYpv7rDq4aP2uMhwxvT6ZBmLM99kqoJfZqPc52QLWnve7kVMtrNbRYz6sqmuU+MAnHt/qT1VFU3oyEFCknKgJnU1n8r5JM9YW5ooSvjg7pbir9QYSdUog== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=1oZ+8Mqa0m0fr5Qnx1JpFkC8RqyrD4RJz+bT0sw1usk=; b=biQmVSDG8dvFZsLK23qt/mU0Vqo5GjjxvsAfiC7laO/aWtfpiMOjocxami8R9WAEgr59PiERdzXLCdTxeGGyfrNMwUKpEtnrYG1Kf4weshxG1WvtHvF39zSa4QtaKm8uuJrnpxrJL6zW7erietkrW0ieopdjIpGQR6espWFnu9SEsUcotM70r9dCiHE2rZ0TtU1GXHK1XZIFEM0JBe4x0tiP0W86itU5WeYWYLyQHNoKuhb5tTcbV/IEif4GpVHLk31UKSEU6BzUIMBEH/wvUikb49v9eA+9GHtQ9rYENQx0ve1houbcjr/w+6sSDhoY0o9QF2JsGzT0b57EuPrBDQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=hammerspace.com; dmarc=pass action=none header.from=hammerspace.com; dkim=pass header.d=hammerspace.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=hammerspace.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=1oZ+8Mqa0m0fr5Qnx1JpFkC8RqyrD4RJz+bT0sw1usk=; b=dLO7J/9tUuVnx5wZQIiX5+5D0n9uNoMC6DRZ5u/HFFZ3HlFw5DVOnfTD9j8F080insNrYdC8PM4sYW2lhHQ5VmmSESFCzcYjdY7bnTeiumkQ+SwQHkeuNgVtt/RyCPv+E2Ooc16fu3zKLuxfNRWOcESlakme8VoN7GQjJJtNjQ8= Received: from MN2PR13MB3957.namprd13.prod.outlook.com (2603:10b6:208:263::11) by MN2PR13MB3373.namprd13.prod.outlook.com (2603:10b6:208:16a::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3433.16; Thu, 1 Oct 2020 19:29:51 +0000 Received: from MN2PR13MB3957.namprd13.prod.outlook.com ([fe80::e8a1:6acc:70f0:ef39]) by MN2PR13MB3957.namprd13.prod.outlook.com ([fe80::e8a1:6acc:70f0:ef39%6]) with mapi id 15.20.3433.037; Thu, 1 Oct 2020 19:29:51 +0000 From: Trond Myklebust To: "bfields@fieldses.org" CC: "linux-cachefs@redhat.com" , "linux-nfs@vger.kernel.org" , "jlayton@kernel.org" , "daire@dneg.com" Subject: Re: [Linux-cachefs] Adventures in NFS re-exporting Thread-Topic: [Linux-cachefs] Adventures in NFS re-exporting Thread-Index: fNDm/l4o9cYx5Rz5g0S1EO4zMAtIR1/IOmk+iGKBtwAAMJPuAAABg7oAAAAMOAAAACH6AA== Date: Thu, 1 Oct 2020 19:29:51 +0000 Message-ID: References: <943482310.31162206.1599499860595.JavaMail.zimbra@dneg.com> <1155061727.42788071.1600777874179.JavaMail.zimbra@dneg.com> <97eff1ee2886c14bcd7972b17330f18ceacdef78.camel@kernel.org> <20201001184118.GE1496@fieldses.org> <1424d45ba1d140bfcff4ae834c70b0a79daa6807.camel@hammerspace.com> <20201001192602.GF1496@fieldses.org> In-Reply-To: <20201001192602.GF1496@fieldses.org> Accept-Language: en-US, en-GB Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: fieldses.org; dkim=none (message not signed) header.d=none;fieldses.org; dmarc=none action=none header.from=hammerspace.com; x-originating-ip: [68.36.133.222] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 5d333458-aea8-4419-e575-08d866405e26 x-ms-traffictypediagnostic: MN2PR13MB3373: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:10000; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: CQ0WUh2viJDd0H5+16vMihre1CI1uONXQZZ5ch+WOpDmGzhhiwmV/491nTkAmyYmv2OoveTAoBN/sSuUATqWu4rg3kJLcovz+FEs0hss2x8YyZMcqQT8PMptNNNJ/r2CqTNfaP48dN1LjHBJLqLXwr96TOPSSEATxzadBQQy1k5xMQvcNc1wIsRNN7Nk7/Dbojc+msIWrmtSETC5beR/WUlx546RdecBytrPS75rrEeJw/A5F5UP2iOP9QGzmzAW3TogeY/iovbb9uHIrIBXJu4YU0SGLNrWZ+yYBTUuJCfax3DvyqhkrLpiZfJqkBkmisJvWs0fYBD9QSHjgQZiZQ== x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MN2PR13MB3957.namprd13.prod.outlook.com;PTR:;CAT:NONE;SFS:(376002)(346002)(396003)(136003)(366004)(39840400004)(66446008)(66556008)(66476007)(64756008)(83380400001)(36756003)(2906002)(66946007)(8676002)(86362001)(91956017)(8936002)(6512007)(76116006)(6916009)(26005)(6486002)(6506007)(186003)(71200400001)(2616005)(478600001)(5660300002)(316002)(4326008)(54906003);DIR:OUT;SFP:1102; x-ms-exchange-antispam-messagedata: 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 x-ms-exchange-transport-forked: True Content-Type: text/plain; charset="utf-8" Content-ID: <4ADE38E92137614485C33ED99D6E56B1@namprd13.prod.outlook.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-OriginatorOrg: hammerspace.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MN2PR13MB3957.namprd13.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5d333458-aea8-4419-e575-08d866405e26 X-MS-Exchange-CrossTenant-originalarrivaltime: 01 Oct 2020 19:29:51.5327 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 0d4fed5c-3a70-46fe-9430-ece41741f59e X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 9E33MaL7hOCe2ZVzfVUEoLjUN5V+jZPVOEQ83YJBLW3UmcmosuAZ6KkWMEITVyPAPh0IYl2FgvQGT0ehAVNAuQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR13MB3373 Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org T24gVGh1LCAyMDIwLTEwLTAxIGF0IDE1OjI2IC0wNDAwLCBiZmllbGRzQGZpZWxkc2VzLm9yZyB3 cm90ZToNCj4gT24gVGh1LCBPY3QgMDEsIDIwMjAgYXQgMDc6MjQ6NDJQTSArMDAwMCwgVHJvbmQg TXlrbGVidXN0IHdyb3RlOg0KPiA+IE9uIFRodSwgMjAyMC0xMC0wMSBhdCAxNDo0MSAtMDQwMCwg Si4gQnJ1Y2UgRmllbGRzIHdyb3RlOg0KPiA+ID4gT24gV2VkLCBTZXAgMzAsIDIwMjAgYXQgMDM6 MzA6MjJQTSAtMDQwMCwgSmVmZiBMYXl0b24gd3JvdGU6DQo+ID4gPiA+IE9uIFR1ZSwgMjAyMC0w OS0yMiBhdCAxMzozMSArMDEwMCwgRGFpcmUgQnlybmUgd3JvdGU6DQo+ID4gPiA+ID4gVGhpcyBw YXRjaCBoZWxwcyB0byBhdm9pZCB0aGlzIHdoZW4gYXBwbGllZCB0byB0aGUgcmUtZXhwb3J0DQo+ ID4gPiA+ID4gc2VydmVyIGJ1dCB0aGVyZSBtYXkgYmUgb3RoZXIgcGxhY2VzIHdoZXJlIHRoaXMg aGFwcGVucyB0b28uDQo+ID4gPiA+ID4gSQ0KPiA+ID4gPiA+IGFjY2VwdCB0aGF0IHRoaXMgcGF0 Y2ggaXMgcHJvYmFibHkgbm90IHRoZSByaWdodC9nZW5lcmFsIHdheQ0KPiA+ID4gPiA+IHRvDQo+ ID4gPiA+ID4gZG8gdGhpcywgYnV0IGl0IGhlbHBzIHRvIGhpZ2hsaWdodCB0aGUgaXNzdWUgd2hl biByZS0NCj4gPiA+ID4gPiBleHBvcnRpbmcNCj4gPiA+ID4gPiBhbmQgaXQgd29ya3Mgd2VsbCBm b3Igb3VyIHVzZSBjYXNlOg0KPiA+ID4gPiA+IA0KPiA+ID4gPiA+IC0tLSBsaW51eC01LjUuMC0x LmVsNy54ODZfNjQvZnMvbmZzL2lub2RlLmMgICAgIDIwMjAtMDEtMjcNCj4gPiA+ID4gPiAwMDoy MzowMy4wMDAwMDAwMDAgKzAwMDANCj4gPiA+ID4gPiArKysgbmV3L2ZzL25mcy9pbm9kZS5jICAy MDIwLTAyLTEzIDE2OjMyOjA5LjAxMzA1NTA3NCArMDAwMA0KPiA+ID4gPiA+IEBAIC0xODY5LDcg KzE4NjksNyBAQA0KPiA+ID4gPiA+ICANCj4gPiA+ID4gPiAgICAgICAgIC8qIE1vcmUgY2FjaGUg Y29uc2lzdGVuY3kgY2hlY2tzICovDQo+ID4gPiA+ID4gICAgICAgICBpZiAoZmF0dHItPnZhbGlk ICYgTkZTX0FUVFJfRkFUVFJfQ0hBTkdFKSB7DQo+ID4gPiA+ID4gLSAgICAgICAgICAgICAgIGlm ICghaW5vZGVfZXFfaXZlcnNpb25fcmF3KGlub2RlLCBmYXR0ci0NCj4gPiA+ID4gPiA+IGNoYW5n ZV9hdHRyKSkgew0KPiA+ID4gPiA+ICsgICAgICAgICAgICAgICBpZiAoaW5vZGVfcGVla19pdmVy c2lvbl9yYXcoaW5vZGUpIDwgZmF0dHItDQo+ID4gPiA+ID4gPiBjaGFuZ2VfYXR0cikgew0KPiA+ ID4gPiA+ICAgICAgICAgICAgICAgICAgICAgICAgIC8qIENvdWxkIGl0IGJlIGEgcmFjZSB3aXRo IHdyaXRlYmFjaz8NCj4gPiA+ID4gPiAqLw0KPiA+ID4gPiA+ICAgICAgICAgICAgICAgICAgICAg ICAgIGlmICghKGhhdmVfd3JpdGVycyB8fA0KPiA+ID4gPiA+IGhhdmVfZGVsZWdhdGlvbikpIHsN Cj4gPiA+ID4gPiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIGludmFsaWQgfD0NCj4g PiA+ID4gPiBORlNfSU5PX0lOVkFMSURfREFUQQ0KPiA+ID4gPiA+IA0KPiA+ID4gPiA+IFdpdGgg dGhpcyBwYXRjaCwgdGhlIHJlLWV4cG9ydCBzZXJ2ZXIncyBORlMgY2xpZW50IGF0dHJpYnV0ZQ0K PiA+ID4gPiA+IGNhY2hlIGlzIG1haW50YWluZWQgYW5kIHVzZWQgYnkgYWxsIHRoZSBjbGllbnRz IHRoYXQgdGhlbg0KPiA+ID4gPiA+IG1vdW50DQo+ID4gPiA+ID4gaXQuIFdoZW4gbWFueSBodW5k cmVkcyBvZiBjbGllbnRzIGFyZSBhbGwgZG9pbmcgc2ltaWxhcg0KPiA+ID4gPiA+IHRoaW5ncyBh dA0KPiA+ID4gPiA+IHRoZSBzYW1lIHRpbWUsIHRoZSByZS1leHBvcnQgc2VydmVyJ3MgTkZTIGNs aWVudCBjYWNoZSBpcw0KPiA+ID4gPiA+IGludmFsdWFibGUgaW4gYWNjZWxlcmF0aW5nIHRoZSBs b29rdXBzIChnZXRhdHRycykuDQo+ID4gPiA+ID4gDQo+ID4gPiA+ID4gUGVyaGFwcyBhIG1vcmUg Y29ycmVjdCBhcHByb2FjaCB3b3VsZCBiZSB0byBkZXRlY3Qgd2hlbiBpdCBpcw0KPiA+ID4gPiA+ IGtuZnNkIHRoYXQgaXMgYWNjZXNzaW5nIHRoZSBjbGllbnQgbW91bnQgYW5kIGNoYW5nZSB0aGUg Y2FjaGUNCj4gPiA+ID4gPiBjb25zaXN0ZW5jeSBjaGVja3MgYWNjb3JkaW5nbHk/IA0KPiA+ID4g PiANCj4gPiA+ID4gWWVhaCwgSSBkb24ndCB0aGluayB5b3UgY2FuIGRvIHRoaXMgZm9yIHRoZSBy ZWFzb25zIFRyb25kDQo+ID4gPiA+IG91dGxpbmVkLg0KPiA+ID4gDQo+ID4gPiBJJ20gbm90IGNs ZWFyIHdoZXRoZXIgVHJvbmQgdGhvdWdodCB0aGF0IGtuZnNkJ3MgYmVoYXZpb3IgaW4gdGhlDQo+ ID4gPiBjYXNlDQo+ID4gPiBpdA0KPiA+ID4gcmV0dXJucyBORlM0X0NIQU5HRV9UWVBFX0lTX01P Tk9UT05JQ19JTkNSIG1pZ2h0IGJlIGdvb2QgZW5vdWdoDQo+ID4gPiB0bw0KPiA+ID4gYWxsb3cN Cj4gPiA+IHRoaXMgb3Igc29tZSBvdGhlciBvcHRpbWl6YXRpb24uDQo+ID4gPiANCj4gPiANCj4g PiBORlM0X0NIQU5HRV9UWVBFX0lTX01PTk9UT05JQ19JTkNSIHNob3VsZCBub3JtYWxseSBiZSBn b29kIGVub3VnaA0KPiA+IHRvDQo+ID4gYWxsb3cgdGhlIGFib3ZlIG9wdGltaXNhdGlvbiwgeWVz LiBJJ20gbGVzcyBzdXJlIGFib3V0IHdoZXRoZXIgb3INCj4gPiBub3QNCj4gPiB3ZSBhcmUgY29y cmVjdCBpbiByZXR1cm5pbmcgTkZTNF9DSEFOR0VfVFlQRV9JU19NT05PVE9OSUNfSU5DUiB3aGVu DQo+ID4gaW4NCj4gPiBmYWN0IHdlIGFyZSBhZGRpbmcgdGhlIGN0aW1lIGFuZCBmaWxlc3lzdGVt LXNwZWNpZmljIGNoYW5nZQ0KPiA+IGF0dHJpYnV0ZSwNCj4gPiBidXQgd2UgY291bGQgZml4IHRo YXQgdG9vLg0KPiANCj4gQ291bGQgeW91IGV4cGxhaW4geW91ciBjb25jZXJuPw0KPiANCg0KU2Ft ZSBhcyBiZWZvcmU6IHRoYXQgdGhlIGN0aW1lIGNvdWxkIGNhdXNlIHRoZSB2YWx1ZSB0byByZWdy ZXNzIGlmDQpzb21lb25lIG1lc3NlcyB3aXRoIHRoZSBzeXN0ZW0gdGltZSBvbiB0aGUgc2VydmVy LiBZZXMsIHdlIGRvIGFkZCBpbg0KdGhlIGNoYW5nZSBhdHRyaWJ1dGUsIGJ1dCB0aGUgdmFsdWUg b2YgY3RpbWUudHZfc2VjIGRvbWluYXRlcyBieSBhDQpmYWN0b3IgMl4zMC4NCg0KLS0gDQpUcm9u ZCBNeWtsZWJ1c3QNCkxpbnV4IE5GUyBjbGllbnQgbWFpbnRhaW5lciwgSGFtbWVyc3BhY2UNCnRy b25kLm15a2xlYnVzdEBoYW1tZXJzcGFjZS5jb20NCg0KDQo=