From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-194.mimecast.com ([63.128.21.194]:59260 "EHLO us-smtp-delivery-194.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933941AbdDGPqc (ORCPT ); Fri, 7 Apr 2017 11:46:32 -0400 From: Trond Myklebust To: "miklos@szeredi.hu" CC: "bfields@fieldses.org" , "viro@zeniv.linux.org.uk" , "jlayton@poochiereds.net" , "amir73il@gmail.com" , "linux-unionfs@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" Subject: Re: overlayfs NFS export Date: Fri, 7 Apr 2017 15:46:25 +0000 Message-ID: <1491579981.12269.1.camel@primarydata.com> References: <1491577054.10609.1.camel@primarydata.com> In-Reply-To: Content-Language: en-US Content-ID: <33B0D517256981418B2E540D46F0607F@namprd11.prod.outlook.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Sender: linux-fsdevel-owner@vger.kernel.org List-ID: T24gRnJpLCAyMDE3LTA0LTA3IGF0IDE3OjI4ICswMjAwLCBNaWtsb3MgU3plcmVkaSB3cm90ZToN Cj4gT24gRnJpLCBBcHIgNywgMjAxNyBhdCA0OjU3IFBNLCBUcm9uZCBNeWtsZWJ1c3QgPHRyb25k bXlAcHJpbWFyeWRhdGEuDQo+IGNvbT4gd3JvdGU6DQo+IA0KPiA+IFdoYXQgaXMgdGhlIHByb2Js ZW0geW91IGFyZSB0cnlpbmcgdG8gc29sdmU/DQo+IA0KPiBUaGUgcHJvYmxlbSBpcyBnZXR0aW5n IGEgcGVyc2lzdGVudCBmaWxlIGhhbmRsZSBmb3Igb3ZlcmxheWZzIGZpbGVzLg0KPiANCj4gT25l IGlkZWEgc3VnZ2VzdGVkIGJ5IFZpcm8gaXMgdG8gY3JlYXRlIGEgZHVtbXkgaW5vZGUgb24gdGhl IHVwcGVyDQo+IGxheWVyIHdoZW5ldmVyIHdlIGxvb2sgdXAgYSBkZW50cnkgaW4gdGhlIG92ZXJs YXkgZmlsZXN5c3RlbS7CoMKgVGhlbg0KPiB3ZQ0KPiBoYXZlIGFuIGlub2RlIG51bWJlciByZXNl cnZlZCBmb3IgdGhlIGZpbGUgaWYgaXQgbmVlZHMgdG8gYmUgY29waWVkDQo+IHVwLiBUaGlzIHNv bHZlcyB0aGUgZmlsZSBoYW5kbGUgcHJvYmxlbSwgc2luY2Ugd2UgY2FuIGdlbmVyYXRlIGEgcGF0 aA0KPiBmcm9tIHRoZSBmaWxlIGhhbmRsZSBhbmQgZnJvbSB0aGVyZSBnZXQgdGhlIG9yaWdpbmFs IGxvd2VyIGxheWVyIGZpbGUNCj4gKGFzc3VtZXMgdGhlIGZpbGUgaGFuZGxlIGhhcyB0aGUgcGFy ZW50IGhhbmRsZSBlbmNvZGVkIGFzIHdlbGwpLsKgwqBJZg0KPiB0aGUgZmlsZSBpcyBjb3BpZWQg dXAsIHRoZSBmaWxlIGlzIG5vIGxvbmdlciBhc3NpY2lhdGVkIHdpdGggdGhlDQo+IGxvd2VyDQo+ IGxheWVyLCB3ZSBqdXN0IG5lZWQgdG8gdXNlIHRoZSB1cHBlciBpbm9kZSwgdGhpcyB3b3JrcyB0 b28uwqDCoEFuZCBhbHNvDQo+IGZpbGVzIGNyZWF0ZWQgb24gdGhlIHVwcGVyIHdvcmsgZmluZS4N Cj4gDQoNCldoeSBkbyB5b3UgbmVlZCB0aGUgcGFyZW50IGRpcmVjdG9yeSB0byBiZSBlbmNvZGVk IGFzIHdlbGw/IERvZXNuJ3QNCmZoX3RvX2RlbnRyeSgpIHN1ZmZpY2U/DQoNClRoZSB0aGluZyBp cyB0aGF0IGZvciBhbGwgbmFtZXNwYWNlIHJlbGF0ZWQgb3BlcmF0aW9ucyAobWtkaXIoKSwNCnJt ZGlyKCksIG9wZW4oT19DUkVBVEUpLCB1bmxpbmssLi4uKSB0aGUgY2xpZW50IHdpbGwgc3VwcGx5 IHRoZSBwYXJlbnQNCmZpbGVoYW5kbGUsIHNvIHRob3NlIG9wZXJhdGlvbnMgc2hvdWxkIG5vdCBu b3JtYWxseSBzdWZmZXIuDQoNClRoZSBvbmx5IG9wZXJhdGlvbiB0aGF0IHdvdWxkIGJlIGEgcHJv YmxlbSBpcyB3aGVuIHlvdSBoYXZlIHRvIGNvcHkgdXANCmEgcmVndWxhciBmaWxlLCBidXQgZm9y IHRoYXQgY2FzZSBvdmVybGF5ZnMgbmVlZHMgdG8gZ2VuZXJhdGUgZGVudHJpZXMNCmZvciBfYWxs XyBoYXJkbGlua3MgdG8gdGhhdCBmaWxlLCBpbiB0aGUgdXBwZXIgbGF5ZXIsIG5vPw0KDQo+IFRo ZSBvbmx5IGxpdHRsZSBwcm9ibGVtIGlzIHRoYXQgd2UgYXJlIGNyZWF0aW5nIGxvdHMgb2YgaW5v ZGVzIG9uDQo+IGRpc2sNCj4gYW5kIG1lbW9yeSB0aGF0IHVudGlsIG5vdyB3ZSBoYXZlbid0LsKg wqBDdXJyZW50bHkgb3ZlcmxheWZzIG9ubHkNCj4gbW9kaWZpZXMgdXBwZXIgbGF5ZXIgaWYgdGhl cmUncyBhIGdvb2QgcmVhc29uIHRvIGJlbGlldmUgdGhhdCB0aGVyZQ0KPiBpcw0KPiByZWFsbHkg Z29pbmcgdG8gYmUgbW9kaWZpY2F0aW9uIChlLmcuIHdoZW4gZmlsZSBpcyBvcGVuZWQgZm9yIHdy aXRlKS4NCj4gDQo+IFRoZSBhbHRlcm5hdGl2ZSBpcyBnZW5lcmF0ZSBmaWxlIGhhbmRsZSBmcm9t IGxvd2VyIGZpbGUgKGlmIG9uIGxvd2VyKQ0KPiBhbmQgZnJvbSB1cHBlciBmaWxlIChpZiBvbiB1 cHBlcikuwqDCoMKgVGhlIGlzc3VlIGlzIGlmIHRoZSBmaWxlIGlzDQo+IGNvcGllZCB1cCBhbmQg Z29lcyBmcm9tIGxvd2VyIHRvIHVwcGVyLsKgwqBJbiB0aGF0IGNhc2Ugd2UgbmVlZCB0byBmaW5k DQo+IHRoZSB1cHBlciBmaWxlIGZyb20gdGhlIGhhbmRsZSBnZW5lcmF0ZWQgZnJvbSB0aGUgbG93 ZXIgZmlsZS7CoMKgwqBUaGlzDQo+IHdvcmtzIGFzIGxvbmcgYXMgdGhlIHVwcGVyIGZpbGUgaGFz bid0IGJlZW4gcmVuYW1lZCwgc2FtZSB3YXkgd2UNCj4gZm91bmQNCj4gdGhlIGxvd2VyIGZyb20g dGhlIHVwcGVyIFZpcm8ncyBzY2hlbWU6IGdlbmVyYXRlIHBhdGggZnJvbSBsb3dlciBmaWxlDQo+ IGhhbmRsZSBhbmQgbG9vayB1cCBpbiBvdmVybGF5LsKgwqBXaGVuIGNvcGllZCB1cCBmaWxlIGlz IHJlbmFtZWQsIHRoaXMNCj4gZG9lc24ndCB3b3JrIGFueW1vcmUsIHNvIHdlIG5lZWQgYSBtYXBw aW5nIGZyb20gbG93ZXItaGFuZGxlIHRvDQo+IHVwcGVyLWhhbmRsZS4NCj4gDQpHZW5lcmF0aW5n IGZpbGVoYW5kbGVzIGZyb20gdGhlIG5hbWVzcGFjZSBpcyBhIG5pZ2h0bWFyZS4gSXQgb25seSB3 b3Jrcw0KaWYgeW91IGhhdmUgc3RyaWN0IG5vbi1QT1NJWC1jb21wYXRpYmxlIHJ1bGVzIGFib3V0 IG5vdCBiZWluZyBhYmxlIHRvDQptb2RpZnkgdGhlIHBhcmVudCBvZiBhIHN1YnRyZWUgaWYgdGhl cmUgaXMgYSBmaWxlIGluIHVzZSBpbiB0aGF0DQpzdWJ0cmVlLiBZb3UgY2FuIHRoZXJlZm9yZSBt YWtlIGl0IHdvcmsgaWYgdGhlIHVuZGVybHlpbmcgZmlsZXN5c3RlbSBpcw0Kc29tZXRoaW5nIGxp a2UgTlRGUywgYnV0IG5vdCBpZiB5b3Ugd2FudCBQT1NJWCBzZW1hbnRpY3MuDQoNCi0tIA0KVHJv bmQgTXlrbGVidXN0DQpMaW51eCBORlMgY2xpZW50IG1haW50YWluZXIsIFByaW1hcnlEYXRhDQp0 cm9uZC5teWtsZWJ1c3RAcHJpbWFyeWRhdGEuY29tDQo=