From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laurence Oberman Subject: Re: dm-rq queue stalls Date: Wed, 17 Jan 2018 14:46:31 -0500 Message-ID: <1516218391.3805.0.camel@redhat.com> References: <1516212342.2820.26.camel@wdc.com> <20180117181852.GA5798@redhat.com> <1516213796.31083.2.camel@redhat.com> <1516217368.2820.39.camel@wdc.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1516217368.2820.39.camel@wdc.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: Bart Van Assche , "snitzer@redhat.com" Cc: "axboe@kernel.dk" , "dm-devel@redhat.com" , "ming.lei@redhat.com" List-Id: dm-devel.ids T24gV2VkLCAyMDE4LTAxLTE3IGF0IDE5OjI5ICswMDAwLCBCYXJ0IFZhbiBBc3NjaGUgd3JvdGU6 Cj4gT24gV2VkLCAyMDE4LTAxLTE3IGF0IDEzOjI5IC0wNTAwLCBMYXVyZW5jZSBPYmVybWFuIHdy b3RlOgo+ID4gSWYgeW91IGNhbiBzaGFyZSB5b3VyIGV4YWN0IGZpbyBydW4gc2NyaXB0cGFyYW1l dGVycyBJIGNhbiB0cnkgdGhpcwo+ID4gb24KPiA+IG15IG1seDUgdGVzdCBiZWQgdXNpbmcgdGhl IHNhbWUga2VybmVsIHlvdSBhcmUgdXNpbmcuCj4gPiBNaW5nIGhhcyBhY2Nlc3MgdG8gdGhlIHNh bWUgdGVzdCBiZWQgYXMgd2VsbC4KPiA+IElzIHRoaXMgZGlyZWN0IHRvIGRldmljZXMsIG9yIG9u IGEgZmlsZSBzeXN0ZW0gZXRjLiBldGMuCj4gPiAKPiA+IEFyZSB0aGVzZSBmcm9tIHRoZSB0ZXN0 cyBkaXJlY3RvcnkgaW4gdGhlIHNycCB0ZXN0IGtpdCBvZiB5b3Vycy4KPiAKPiBIZWxsbyBMYXVy ZW5jZSwKPiAKPiBUaGlzIGlzc3VlIGNhbiBiZSByZXByb2R1Y2VkIGFzIGZvbGxvd3M6Cj4gKiBD bG9uZSB0aGUgYmxvY2stc2NzaS1mb3ItbmV4dCBicmFuY2ggZnJvbSBodHRwczovL2dpdGh1Yi5j b20vYnZhbmFzCj4gc2NoZS9saW51eAo+IMKgIChjb21taXQgY2QwYjZiOWY4Nzc5KS4KPiAqIENs b25lIHRoZSBzcnAtdGVzdCBwcm9qZWN0IGZyb20gaHR0cHM6Ly9naXRodWIuY29tL2J2YW5hc3Nj aGUvc3JwLXQKPiBlc3QuCj4gKiBNb2RpZnkgL2V0Yy9tdWx0aXBhdGguY29uZiBhcyBpbmRpY2F0 ZWQgaW4gdGhlIFJFQURNRS5tZCBmaWxlIG9mCj4gdGhlIHNycC10ZXN0Cj4gwqAgcHJvamVjdCBh bmQgcmVzdGFydCBtdWx0aXBhdGhkLgo+IAo+IElmIHlvdSBwcmVmZXIgdGhlIHJkbWFfcnhlIGRy aXZlciwgcnVuIHRoZSBmb2xsb3dpbmcgY29tbWFuZDoKPiAKPiBzcnAtdGVzdC9ydW5fdGVzdHMg LWMgLWQgLXIgMTAgLXEgMSAtdCAwMi1tcSAtZSBreWJlcgo+IAo+IE9yIGlmIHlvdSBwcmVmZXIg dG8gcnVuIHRoZSB0ZXN0IGFnYWluc3QgYW4gSUIgZHJpdmVyIChtbHg0LCBtbHg1LAo+IC4uKSBv biBhbiBJQgo+IHN5c3RlbSwgcnVuIHRoZSBmb2xsb3dpbmcgY29tbWFuZDoKPiAKPiBzcnAtdGVz dC9ydW5fdGVzdHMgLWQgLXIgMTAgLXEgMSAtdCAwMi1tcQo+IAo+IElmIHJ1bm5pbmcgb25lIG9m IHRoZSBhYm92ZSBjb21tYW5kcyBvbmNlIHdvdWxkIG5vdCBiZSBzdWZmaWNpZW50IHRvCj4gdHJp Z2dlciB0aGUKPiBsb2NrdXAsIHJlcnVuIHRoZSBjb21tYW5kIGEgZmV3IHRpbWVzLgo+IAo+IEJh cnQuCgpUaGFua3MKQmFydApJIHdpbGwgdGFrZSBjYXJlIG9mIHRoaXMgdGVzdCBhbmQgY29tZSBi YWNrIHRvIHlvdS4KRmlyc3QgZ29pbmcgdG8gdGVzdCB0aGUgc2NhdHRlci9nYXRoZXIgZml4LgpS ZWdhcmRzCkxhdXJlbmNlCgotLQpkbS1kZXZlbCBtYWlsaW5nIGxpc3QKZG0tZGV2ZWxAcmVkaGF0 LmNvbQpodHRwczovL3d3dy5yZWRoYXQuY29tL21haWxtYW4vbGlzdGluZm8vZG0tZGV2ZWw=