From: Mike Snitzer Subject: Re: Ext4 and xfs problems in dm-thin on allocation and discard Date: Tue, 19 Jun 2012 09:34:42 -0400 Message-ID: <20120619133441.GA7001@redhat.com> References: <4FDF9EBE.2030809@shiftmail.org> <20120619015745.GJ25389@dastard> <20120619031241.GA3884@redhat.com> <4FE062B3.7080702@shiftmail.org> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: =?utf-8?B?THVrw6HFoQ==?= Czerner , device-mapper development , linux-ext4@vger.kernel.org, Dave Chinner , xfs@oss.sgi.com To: Spelic Return-path: Content-Disposition: inline In-Reply-To: <4FE062B3.7080702@shiftmail.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com List-Id: linux-ext4.vger.kernel.org T24gVHVlLCBKdW4gMTkgMjAxMiBhdCAgNzoyOWFtIC0wNDAwLApTcGVsaWMgPHNwZWxpY0BzaGlm dG1haWwub3JnPiB3cm90ZToKCj4gT24gMDYvMTkvMTIgMDg6MzIsIEx1a8OhxaEgQ3plcm5lciB3 cm90ZToKPiA+Cj4gPlNvIGRvIEkgdW5kZXJzdGFuZCBjb3JyZWN0bHkgdGhhdCBldmVuIHRob3Vn aCB0aGUgZGlzY2FyZCBjYW1lCj4gPnRocm91Z2ggYW5kIHRoaW5wIHRvb2sgYWR2YW50YWdlIG9m IGl0IGl0IHN0aWxsIHJldHVybnMgRU9QTk9UU1VQUCA/Cj4gPlRoaXMgc2VlbXMgcmF0aGVyIHN1 Ym9wdGltYWwuIElJUkMgdGhlcmUgd2FzIGEgZGlzY3Vzc2lvbiB0byBhZGQgYW4KPiA+b3B0aW9u IHRvIGVuYWJsZS9kaXNhYmxlIHNlbmRpbmcgZGlzY2FyZCBpbiB0aGlucCB0YXJnZXQgZG93bgo+ ID50byB0aGUgZGV2aWNlLgo+IAo+IEknbGwgYXNrIHRoaXMgdG9vLi4uCj4gZG8gSSB1bmRlcnN0 YW5kIGNvcnJlY3RseSB0aGF0IGRtLXRoaW4gcmV0dXJucyBFT1BOT1RTVVBQIHRvIHRoZQo+IGZp bGVzeXN0ZW0gbGF5ZXIgZXZlbiB0aG91Z2ggaXQgaXMgdXNpbmcgdGhlIGRpc2NhcmQgdG8gdW5t YXAKPiBibG9ja3MsIGFuZCBhdCB0aGF0IHBvaW50IFhGUyBzdG9wcyBzZW5kaW5nIGRpc2NhcmRz IGRvd24gdGhlcmUKPiAod2hpbGUgZXh0NCBrZWVwcyBzZW5kaW5nIHRoZW0pPwoKQXJlIHlvdSBh Y3R1YWxseSBzZWVpbmcgdGhhdD8gIE9yIGFyZSB5b3UganVzdCBzZWl6aW5nIG9uIEx1a2FzJwpt aXN1bmRlcnN0YW5kaW5nPwoKPiBUaGlzIGxvb2tzIGxpa2UgYSBidWcgb2YgZG0tdGhpbiB0byBt ZS4gRGlzY2FyZHMgYXJlICJzdXBwb3J0ZWQiIGluCj4gc3VjaCBhIHNjZW5hcmlvLgo+IAo+IERv IHlvdSBoYXZlIGEgcGF0Y2ggZm9yIGRtLXRoaW4gc28gdG8gcHJldmVudCBpdCBzZW5kaW5nIEVP UFROT1RTVVBQID8KCnRoaW5wIHNob3VsZCBfbm90XyBiZSBzZW5kaW5nIC1FT1BOT1RTVVBQIHVu bGVzcyAnaWdub3JlX2Rpc2NhcmQnIGlzCnByb3ZpZGVkIGFzIGEgZmVhdHVyZSB3aGVuIGxvYWRp bmcgdGhpbi1wb29sJ3MgRE0gIHRhYmxlLgoKLS0KZG0tZGV2ZWwgbWFpbGluZyBsaXN0CmRtLWRl dmVsQHJlZGhhdC5jb20KaHR0cHM6Ly93d3cucmVkaGF0LmNvbS9tYWlsbWFuL2xpc3RpbmZvL2Rt LWRldmVs