Return-Path: Received: from us-smtp-delivery-194.mimecast.com ([216.205.24.194]:47013 "EHLO us-smtp-delivery-194.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755164AbcGHMzs (ORCPT ); Fri, 8 Jul 2016 08:55:48 -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 12:55:41 +0000 Message-ID: References: <20160706174655.GD45215@ubuntu-hedt> <1467842838.2908.45.camel@redhat.com> <20160707235330.GN27480@dastard> <20160708124853.GB16921@ubuntu-hedt> In-Reply-To: <20160708124853.GB16921@ubuntu-hedt> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-nfs-owner@vger.kernel.org List-ID: DQo+IE9uIEp1bCA4LCAyMDE2LCBhdCAwODo0OCwgU2V0aCBGb3JzaGVlIDxzZXRoLmZvcnNoZWVA Y2Fub25pY2FsLmNvbT4gd3JvdGU6DQo+IA0KPiBPbiBGcmksIEp1bCAwOCwgMjAxNiBhdCAwOTo1 MzozMEFNICsxMDAwLCBEYXZlIENoaW5uZXIgd3JvdGU6DQo+PiBPbiBXZWQsIEp1bCAwNiwgMjAx NiBhdCAwNjowNzoxOFBNIC0wNDAwLCBKZWZmIExheXRvbiB3cm90ZToNCj4+PiBPbiBXZWQsIDIw MTYtMDctMDYgYXQgMTI6NDYgLTA1MDAsIFNldGggRm9yc2hlZSB3cm90ZToNCj4+Pj4gV2UncmUg c2VlaW5nIGEgaGFuZyB3aGVuIGZyZWV6aW5nIGEgY29udGFpbmVyIHdpdGggYW4gbmZzIGJpbmQg bW91bnQgd2hpbGUNCj4+Pj4gcnVubmluZyBpb3pvbmUuIFR3byBpb3pvbmUgcHJvY2Vzc2VzIHdl cmUgaHVuZyB3aXRoIHRoaXMgc3RhY2sgdHJhY2UuDQo+Pj4+IA0KPj4+PiAgW10gc2NoZWR1bGUr MHgzNS8weDgwDQo+Pj4+ICBbXSBzY2hlZHVsZV9wcmVlbXB0X2Rpc2FibGVkKzB4ZS8weDEwDQo+ Pj4+ICBbXSBfX211dGV4X2xvY2tfc2xvd3BhdGgrMHhiOS8weDEzMA0KPj4+PiAgW10gbXV0ZXhf bG9jaysweDFmLzB4MzANCj4+Pj4gIFtdIGRvX3VubGlua2F0KzB4MTJiLzB4MmQwDQo+Pj4+ICBb XSBTeVNfdW5saW5rKzB4MTYvMHgyMA0KPj4+PiAgW10gZW50cnlfU1lTQ0FMTF82NF9mYXN0cGF0 aCsweDE2LzB4NzENCj4+Pj4gDQo+Pj4+IFRoaXMgc2VlbXMgdG8gYmUgZHVlIHRvIGFub3RoZXIg aW96b25lIHRocmVhZCBmcm96ZW4gZHVyaW5nIHVubGluayB3aXRoDQo+Pj4+IHRoaXMgc3RhY2sg dHJhY2U6DQo+Pj4+IA0KPj4+PiAgW10gX19yZWZyaWdlcmF0b3IrMHg3YS8weDE0MA0KPj4+PiAg W10gbmZzNF9oYW5kbGVfZXhjZXB0aW9uKzB4MTE4LzB4MTMwIFtuZnN2NF0NCj4+Pj4gIFtdIG5m czRfcHJvY19yZW1vdmUrMHg3ZC8weGYwIFtuZnN2NF0NCj4+Pj4gIFtdIG5mc191bmxpbmsrMHgx NDkvMHgzNTAgW25mc10NCj4+Pj4gIFtdIHZmc191bmxpbmsrMHhmMS8weDFhMA0KPj4+PiAgW10g ZG9fdW5saW5rYXQrMHgyNzkvMHgyZDANCj4+Pj4gIFtdIFN5U191bmxpbmsrMHgxNi8weDIwDQo+ Pj4+ICBbXSBlbnRyeV9TWVNDQUxMXzY0X2Zhc3RwYXRoKzB4MTYvMHg3MQ0KPj4+PiANCj4+Pj4g U2luY2UgbmZzIGlzIGFsbG93aW5nIHRoZSB0aHJlYWQgdG8gYmUgZnJvemVuIHdpdGggdGhlIGlu b2RlIGxvY2tlZCBpdCdzDQo+Pj4+IHByZXZlbnRpbmcgb3RoZXIgdGhyZWFkcyB0cnlpbmcgdG8g bG9jayB0aGUgc2FtZSBpbm9kZSBmcm9tIGZyZWV6aW5nLiBJdA0KPj4+PiBzZWVtcyBsaWtlIGEg YmFkIGlkZWEgZm9yIG5mcyB0byBiZSBkb2luZyB0aGlzLg0KPj4+PiANCj4+PiANCj4+PiBZZWFo LCBrbm93biBwcm9ibGVtLiBOb3QgYSBzaW1wbGUgb25lIHRvIGZpeCB0aG91Z2guDQo+PiANCj4+ IEFjdHVhbGx5LCBpdCBpcyBzaW1wbGUgdG8gZml4Lg0KPj4gDQo+PiA8aW5zZXJ0IGJyb2tlbiBy ZWNvcmQgYWJvdXQgc3VzcGVuZCBzaG91bGQgYmUgdXNpbmcgZnJlZXplX3N1cGVyKCksDQo+PiBu b3Qgc3lzX3N5bmMoKSwgdG8gc3VzcGVuZCBmaWxlc3lzdGVtIG9wZXJhdGlvbnM+DQo+PiANCj4+ IGkuZS4gdGhlIFZGUyBibG9ja3MgbmV3IG9wZXJhdGlvbnMgZnJvbSBzdGFydGluZywgYW5kIHRo ZW4gdGhlbiB0aGUNCj4+IE5GUyBjbGllbnQgc2ltcGx5IG5lZWRzIHRvIGltcGxlbWVudCAtPmZy ZWV6ZV9mcyB0byBkcmFpbiBhbGwgaXQncw0KPj4gYWN0aXZlIG9wZXJhdGlvbnMgYmVmb3JlIHJl dHVybmluZy4gUHJvYmxlbSBzb2x2ZWQuDQo+IA0KPiBObywgdGhpcyB3b24ndCBzb2x2ZSBteSBw cm9ibGVtLiBXZSdyZSBub3QgZG9pbmcgYSBmdWxsIHN1c3BlbmQsIHJhdGhlcg0KPiB1c2luZyBh IGZyZWV6ZXIgY2dyb3VwIHRvIGZyZWV6ZSBhIHN1YnNldCBvZiBwcm9jZXNzZXMuIFdlIGRvbid0 IHdhbnQgdG8NCj4gd2FudCB0byBmdWxseSBmcmVlemUgdGhlIGZpbGVzeXN0ZW0uDQoNCuKApmFu ZCB0aGVyZWluIGxpZXMgdGhlIHJ1Yi4gVGhlIHdob2xlIGNncm91cCBmcmVlemVyIHN0dWZmIGFz c3VtZXMgdGhhdCB5b3UgY2FuIHNhZmVseSBkZWFjdGl2YXRlIGEgYnVuY2ggb2YgcHJvY2Vzc2Vz IHRoYXQgbWF5IG9yIG1heSBub3QgaG9sZCBzdGF0ZSBpbiB0aGUgZmlsZXN5c3RlbS4gVGhhdOKA mXMgZGVmaW5pdGVseSBub3QgT0sgd2hlbiB5b3UgaG9sZCBsb2NrcyBldGMgdGhhdCBjYW4gYWZm ZWN0IHByb2Nlc3NlcyB0aGF0IGxpZXMgb3V0c2lkZSB0aGUgY2dyb3VwIChhbmQvb3Igb3V0c2lk ZSB0aGUgTkZTIGNsaWVudCBpdHNlbGYpLg0KDQpDaGVlcnMNCiAgVHJvbmQNCg0K