Return-Path: Received: from us-smtp-delivery-194.mimecast.com ([63.128.21.194]:59446 "EHLO us-smtp-delivery-194.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932615AbcGHNFq (ORCPT ); Fri, 8 Jul 2016 09:05:46 -0400 From: Trond Myklebust To: Seth Forshee CC: Chinner Dave , Jeff Layton , Schumaker Anna , "linux-fsdevel@vger.kernel.org" , "linux-nfs@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Tycho Andersen Subject: Re: Hang due to nfs letting tasks freeze with locked inodes Date: Fri, 8 Jul 2016 13:05:40 +0000 Message-ID: <8E320A98-4DA6-49B0-8288-E46A03A899C1@primarydata.com> References: <20160706174655.GD45215@ubuntu-hedt> <1467842838.2908.45.camel@redhat.com> <20160707235330.GN27480@dastard> <20160708124853.GB16921@ubuntu-hedt> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-nfs-owner@vger.kernel.org List-ID: DQo+IE9uIEp1bCA4LCAyMDE2LCBhdCAwODo1NSwgVHJvbmQgTXlrbGVidXN0IDx0cm9uZG15QHBy aW1hcnlkYXRhLmNvbT4gd3JvdGU6DQo+IA0KPiANCj4+IE9uIEp1bCA4LCAyMDE2LCBhdCAwODo0 OCwgU2V0aCBGb3JzaGVlIDxzZXRoLmZvcnNoZWVAY2Fub25pY2FsLmNvbT4gd3JvdGU6DQo+PiAN Cj4+IE9uIEZyaSwgSnVsIDA4LCAyMDE2IGF0IDA5OjUzOjMwQU0gKzEwMDAsIERhdmUgQ2hpbm5l ciB3cm90ZToNCj4+PiBPbiBXZWQsIEp1bCAwNiwgMjAxNiBhdCAwNjowNzoxOFBNIC0wNDAwLCBK ZWZmIExheXRvbiB3cm90ZToNCj4+Pj4gT24gV2VkLCAyMDE2LTA3LTA2IGF0IDEyOjQ2IC0wNTAw LCBTZXRoIEZvcnNoZWUgd3JvdGU6DQo+Pj4+PiBXZSdyZSBzZWVpbmcgYSBoYW5nIHdoZW4gZnJl ZXppbmcgYSBjb250YWluZXIgd2l0aCBhbiBuZnMgYmluZCBtb3VudCB3aGlsZQ0KPj4+Pj4gcnVu bmluZyBpb3pvbmUuIFR3byBpb3pvbmUgcHJvY2Vzc2VzIHdlcmUgaHVuZyB3aXRoIHRoaXMgc3Rh Y2sgdHJhY2UuDQo+Pj4+PiANCj4+Pj4+IFtdIHNjaGVkdWxlKzB4MzUvMHg4MA0KPj4+Pj4gW10g c2NoZWR1bGVfcHJlZW1wdF9kaXNhYmxlZCsweGUvMHgxMA0KPj4+Pj4gW10gX19tdXRleF9sb2Nr X3Nsb3dwYXRoKzB4YjkvMHgxMzANCj4+Pj4+IFtdIG11dGV4X2xvY2srMHgxZi8weDMwDQo+Pj4+ PiBbXSBkb191bmxpbmthdCsweDEyYi8weDJkMA0KPj4+Pj4gW10gU3lTX3VubGluaysweDE2LzB4 MjANCj4+Pj4+IFtdIGVudHJ5X1NZU0NBTExfNjRfZmFzdHBhdGgrMHgxNi8weDcxDQo+Pj4+PiAN Cj4+Pj4+IFRoaXMgc2VlbXMgdG8gYmUgZHVlIHRvIGFub3RoZXIgaW96b25lIHRocmVhZCBmcm96 ZW4gZHVyaW5nIHVubGluayB3aXRoDQo+Pj4+PiB0aGlzIHN0YWNrIHRyYWNlOg0KPj4+Pj4gDQo+ Pj4+PiBbXSBfX3JlZnJpZ2VyYXRvcisweDdhLzB4MTQwDQo+Pj4+PiBbXSBuZnM0X2hhbmRsZV9l eGNlcHRpb24rMHgxMTgvMHgxMzAgW25mc3Y0XQ0KPj4+Pj4gW10gbmZzNF9wcm9jX3JlbW92ZSsw eDdkLzB4ZjAgW25mc3Y0XQ0KPj4+Pj4gW10gbmZzX3VubGluaysweDE0OS8weDM1MCBbbmZzXQ0K Pj4+Pj4gW10gdmZzX3VubGluaysweGYxLzB4MWEwDQo+Pj4+PiBbXSBkb191bmxpbmthdCsweDI3 OS8weDJkMA0KPj4+Pj4gW10gU3lTX3VubGluaysweDE2LzB4MjANCj4+Pj4+IFtdIGVudHJ5X1NZ U0NBTExfNjRfZmFzdHBhdGgrMHgxNi8weDcxDQo+Pj4+PiANCj4+Pj4+IFNpbmNlIG5mcyBpcyBh bGxvd2luZyB0aGUgdGhyZWFkIHRvIGJlIGZyb3plbiB3aXRoIHRoZSBpbm9kZSBsb2NrZWQgaXQn cw0KPj4+Pj4gcHJldmVudGluZyBvdGhlciB0aHJlYWRzIHRyeWluZyB0byBsb2NrIHRoZSBzYW1l IGlub2RlIGZyb20gZnJlZXppbmcuIEl0DQo+Pj4+PiBzZWVtcyBsaWtlIGEgYmFkIGlkZWEgZm9y IG5mcyB0byBiZSBkb2luZyB0aGlzLg0KPj4+Pj4gDQo+Pj4+IA0KPj4+PiBZZWFoLCBrbm93biBw cm9ibGVtLiBOb3QgYSBzaW1wbGUgb25lIHRvIGZpeCB0aG91Z2guDQo+Pj4gDQo+Pj4gQWN0dWFs bHksIGl0IGlzIHNpbXBsZSB0byBmaXguDQo+Pj4gDQo+Pj4gPGluc2VydCBicm9rZW4gcmVjb3Jk IGFib3V0IHN1c3BlbmQgc2hvdWxkIGJlIHVzaW5nIGZyZWV6ZV9zdXBlcigpLA0KPj4+IG5vdCBz eXNfc3luYygpLCB0byBzdXNwZW5kIGZpbGVzeXN0ZW0gb3BlcmF0aW9ucz4NCj4+PiANCj4+PiBp LmUuIHRoZSBWRlMgYmxvY2tzIG5ldyBvcGVyYXRpb25zIGZyb20gc3RhcnRpbmcsIGFuZCB0aGVu IHRoZW4gdGhlDQo+Pj4gTkZTIGNsaWVudCBzaW1wbHkgbmVlZHMgdG8gaW1wbGVtZW50IC0+ZnJl ZXplX2ZzIHRvIGRyYWluIGFsbCBpdCdzDQo+Pj4gYWN0aXZlIG9wZXJhdGlvbnMgYmVmb3JlIHJl dHVybmluZy4gUHJvYmxlbSBzb2x2ZWQuDQo+PiANCj4+IE5vLCB0aGlzIHdvbid0IHNvbHZlIG15 IHByb2JsZW0uIFdlJ3JlIG5vdCBkb2luZyBhIGZ1bGwgc3VzcGVuZCwgcmF0aGVyDQo+PiB1c2lu ZyBhIGZyZWV6ZXIgY2dyb3VwIHRvIGZyZWV6ZSBhIHN1YnNldCBvZiBwcm9jZXNzZXMuIFdlIGRv bid0IHdhbnQgdG8NCj4+IHdhbnQgdG8gZnVsbHkgZnJlZXplIHRoZSBmaWxlc3lzdGVtLg0KPiAN Cj4g4oCmYW5kIHRoZXJlaW4gbGllcyB0aGUgcnViLiBUaGUgd2hvbGUgY2dyb3VwIGZyZWV6ZXIg c3R1ZmYgYXNzdW1lcyB0aGF0IHlvdSBjYW4gc2FmZWx5IGRlYWN0aXZhdGUgYSBidW5jaCBvZiBw cm9jZXNzZXMgdGhhdCBtYXkgb3IgbWF5IG5vdCBob2xkIHN0YXRlIGluIHRoZSBmaWxlc3lzdGVt LiBUaGF04oCZcyBkZWZpbml0ZWx5IG5vdCBPSyB3aGVuIHlvdSBob2xkIGxvY2tzIGV0YyB0aGF0 IGNhbiBhZmZlY3QgcHJvY2Vzc2VzIHRoYXQgbGllcyBvdXRzaWRlIHRoZSBjZ3JvdXAgKGFuZC9v ciBvdXRzaWRlIHRoZSBORlMgY2xpZW50IGl0c2VsZikuDQo+IA0KDQpJbiBjYXNlIGl0IHdhc27i gJl0IGNsZWFyLCBJ4oCZbSBub3QganVzdCB0YWxraW5nIGFib3V0IFZGUyBtdXRleGVzIGhlcmUu IEnigJltIGFsc28gdGFsa2luZyBhYm91dCBhbGwgdGhlIG90aGVyIHN0dWZmLCBhIGxvdCBvZiB3 aGljaCB0aGUga2VybmVsIGhhcyBubyBjb250cm9sIG92ZXIsIGluY2x1ZGluZyBQT1NJWCBmaWxl IGxvY2tpbmcsIHNoYXJlIGxvY2tzLCBsZWFzZXMvZGVsZWdhdGlvbnMsIGV0Yy4NCg0KVHJvbmQN Cg==