From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Bart Van Assche To: "kent.overstreet@gmail.com" CC: "mingo@kernel.org" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "linux-block@vger.kernel.org" , "axboe@kernel.dk" Subject: Re: [PATCH 00/10] Misc block layer patches for bcachefs Date: Sun, 20 May 2018 22:35:29 +0000 Message-ID: References: <20180509013358.16399-1-kent.overstreet@gmail.com> <20180518090636.GA14738@kmo-pixel> <8f62d8f870c6b66e90d3e7f57acee481acff57f5.camel@wdc.com> <20180520221733.GA11495@kmo-pixel> <20180520223116.GB11495@kmo-pixel> In-Reply-To: <20180520223116.GB11495@kmo-pixel> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 List-ID: T24gU3VuLCAyMDE4LTA1LTIwIGF0IDE4OjMxIC0wNDAwLCBLZW50IE92ZXJzdHJlZXQgd3JvdGU6 DQo+IE9uIFN1biwgTWF5IDIwLCAyMDE4IGF0IDEwOjE5OjEzUE0gKzAwMDAsIEJhcnQgVmFuIEFz c2NoZSB3cm90ZToNCj4gPiBPbiBTdW4sIDIwMTgtMDUtMjAgYXQgMTg6MTcgLTA0MDAsIEtlbnQg T3ZlcnN0cmVldCB3cm90ZToNCj4gPiA+IE9uIEZyaSwgTWF5IDE4LCAyMDE4IGF0IDAzOjEyOjI3 UE0gKzAwMDAsIEJhcnQgVmFuIEFzc2NoZSB3cm90ZToNCj4gPiA+ID4gT24gRnJpLCAyMDE4LTA1 LTE4IGF0IDA1OjA2IC0wNDAwLCBLZW50IE92ZXJzdHJlZXQgd3JvdGU6DQo+ID4gPiA+ID4gT24g VGh1LCBNYXkgMTcsIDIwMTggYXQgMDg6NTQ6NTdQTSArMDAwMCwgQmFydCBWYW4gQXNzY2hlIHdy b3RlOg0KPiA+ID4gPiA+ID4gV2l0aCBKZW5zJyBsYXRlc3QgZm9yLW5leHQgYnJhbmNoIEkgaGl0 IHRoZSBrZXJuZWwgd2FybmluZyBzaG93biBiZWxvdy4gQ2FuDQo+ID4gPiA+ID4gPiB5b3UgaGF2 ZSBhIGxvb2s/DQo+ID4gPiA+ID4gDQo+ID4gPiA+ID4gQW55IGhpbnRzIG9uIGhvdyB0byByZXBy b2R1Y2UgaXQ/DQo+ID4gPiA+IA0KPiA+ID4gPiBTdXJlLiBUaGlzIGlzIGhvdyBJIHRyaWdnZXJl ZCBpdDoNCj4gPiA+ID4gKiBDbG9uZSBodHRwczovL2dpdGh1Yi5jb20vYnZhbmFzc2NoZS9zcnAt dGVzdC4NCj4gPiA+ID4gKiBGb2xsb3cgdGhlIGluc3RydWN0aW9ucyBpbiBSRUFETUUubWQuDQo+ ID4gPiA+ICogUnVuIHNycC10ZXN0L3J1bl90ZXN0cyAtYyAtciAxMA0KPiA+ID4gDQo+ID4gPiBD YW4geW91IGJpc2VjdCBpdD8gSSBkb24ndCBoYXZlIGluZmluaWJhbmQgaGFyZHdhcmUgaGFuZHku Li4NCj4gPiANCj4gPiBIZWxsbyBLZW50LA0KPiA+IA0KPiA+IEhhdmUgeW91IG5vdGljZWQgdGhh dCB0aGUgdGVzdCBJIGRlc2NyaWJlZCB1c2VzIHRoZSByZG1hX3J4ZSBkcml2ZXIgYW5kIGhlbmNl IHRoYXQNCj4gPiBubyBJbmZpbmlCYW5kIGhhcmR3YXJlIGlzIG5lZWRlZCB0byBydW4gdGhhdCB0 ZXN0Pw0KPiANCj4gTm8sIEknbSBub3QgdGVycmlibHkgZmFtaWxpYXIgd2l0aCBpbmZpbmliYW5k IHN0dWZmLi4uLg0KPiANCj4gRG8geW91IGhhdmUgc29tZSBzb3J0IG9mIHNlbGYgY29udGFpbmVk IHRlc3QvcWVtdSByZWNpcGU/IEkgd291bGQgcmVhbGx5IHJhdGhlcg0KPiBub3QgaGF2ZSB0byBm aWd1cmUgb3V0IGhvdyB0byBjb25maWd1cmUgbXVsdGlwYXRoLCBhbmQgaW5maW5pYmFuZCwgYW5k IEknbSBub3QNCj4gZXZlbiBzdXJlIHdoYXQgZWxzZSBpcyBuZWVkZWQgYmFzZWQgb24gdGhhdCBy ZWFkbWUuLi4NCg0KSGVsbG8gS2VudCwNCg0KUGxlYXNlIGhhdmUgYW5vdGhlciBsb29rIGF0IHRo ZSBzcnAtdGVzdCBSRUFETUUuIFRoZSBpbnN0cnVjdGlvbnMgaW4gdGhhdCBkb2N1bWVudA0KYXJl IGVhc3kgdG8gZm9sbG93LiBObyBtdWx0aXBhdGggbm9yIGFueSBJbmZpbmlCYW5kIGtub3dsZWRn ZSBpcyByZXF1aXJlZC4gVGhlIHRlc3QNCmV2ZW4gY2FuIGJlIHJ1biBpbiBhIHZpcnR1YWwgbWFj aGluZSBpbiBjYXNlIHlvdSB3b3VsZCBiZSB3b3JyaWVkIGFib3V0IHBvdGVudGlhbA0KaW1wYWN0 IG9mIHRoZSB0ZXN0IG9uIHRoZSByZXN0IG9mIHRoZSBzeXN0ZW0uDQoNCkJhcnQuDQoNCg0K From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751905AbeETWff (ORCPT ); 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charset="utf-8" Content-ID: MIME-Version: 1.0 X-MS-Office365-Filtering-Correlation-Id: d1e84f74-ed20-441c-736a-08d5bea1fdc9 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: d1e84f74-ed20-441c-736a-08d5bea1fdc9 X-MS-Exchange-CrossTenant-originalarrivaltime: 20 May 2018 22:35:29.8236 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR04MB0846 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id w4KMZe5K016392 On Sun, 2018-05-20 at 18:31 -0400, Kent Overstreet wrote: > On Sun, May 20, 2018 at 10:19:13PM +0000, Bart Van Assche wrote: > > On Sun, 2018-05-20 at 18:17 -0400, Kent Overstreet wrote: > > > On Fri, May 18, 2018 at 03:12:27PM +0000, Bart Van Assche wrote: > > > > On Fri, 2018-05-18 at 05:06 -0400, Kent Overstreet wrote: > > > > > On Thu, May 17, 2018 at 08:54:57PM +0000, Bart Van Assche wrote: > > > > > > With Jens' latest for-next branch I hit the kernel warning shown below. Can > > > > > > you have a look? > > > > > > > > > > Any hints on how to reproduce it? > > > > > > > > Sure. This is how I triggered it: > > > > * Clone https://github.com/bvanassche/srp-test. > > > > * Follow the instructions in README.md. > > > > * Run srp-test/run_tests -c -r 10 > > > > > > Can you bisect it? I don't have infiniband hardware handy... > > > > Hello Kent, > > > > Have you noticed that the test I described uses the rdma_rxe driver and hence that > > no InfiniBand hardware is needed to run that test? > > No, I'm not terribly familiar with infiniband stuff.... > > Do you have some sort of self contained test/qemu recipe? I would really rather > not have to figure out how to configure multipath, and infiniband, and I'm not > even sure what else is needed based on that readme... Hello Kent, Please have another look at the srp-test README. The instructions in that document are easy to follow. No multipath nor any InfiniBand knowledge is required. The test even can be run in a virtual machine in case you would be worried about potential impact of the test on the rest of the system. Bart.