From mboxrd@z Thu Jan 1 00:00:00 1970 From: majianpeng Subject: Re: Re: [PATCH 3/4] md: Don't do normal-write on unresync area of replacement-disk. Date: Tue, 5 Mar 2013 10:53:33 +0800 Message-ID: <201303051053310861705@gmail.com> References: <201302281550356268273@gmail.com> <20130304130435.4113d2a4@notabene.brown> <201303041024138712338@gmail.com>, <20130304163022.7e18af78@notabene.brown> Reply-To: majianpeng Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 Return-path: Sender: linux-raid-owner@vger.kernel.org To: NeilBrown Cc: linux-raid List-Id: linux-raid.ids Pk9uIE1vbiwgNCBNYXIgMjAxMyAxMDoyNDoxNiArMDgwMCBtYWppYW5wZW5nIDxtYWppYW5wZW5n QGdtYWlsLmNvbT4gd3JvdGU6DQo+DQo+PiA+T24gVGh1LCAyOCBGZWIgMjAxMyAxNTo1MDozNyAr MDgwMCBtYWppYW5wZW5nIDxtYWppYW5wZW5nQGdtYWlsLmNvbT4gd3JvdGU6DQo+PiA+DQo+PiA+ PiBSZXBsYWNlbWVudCBpcyBhIGZ1bGxzeW5jIHdoaWNoIGRvbid0IGRlcGVudCBvbiBiaXRtYXAu U28gcmVnYXJkbGVzcyBvZg0KPj4gPj4gdGhlIHByZXNlbmNlIGFuZCBhYnNlbmNlIG9mIGJpdG1h cCwgaXQgZG8gZnVsbCByZXN5bmMuDQo+PiA+PiBJZiBvZmZzZXQgb2Ygbm9ybWFsIGlvIGlzIGxh cmdlciB0aGFuIG9mZnNldCBvZiByZXN5bmMsaXQgd2lsbCB3cml0ZQ0KPj4gPj4gYWdhaW4gd2hl biByZXN5bmMgYXJyaXZlZCB0aGlzIG9mZnNldC4NCj4+ID4NCj4+ID5UaGlzIG1pZ2h0IGJlIE9L IGZvciBSQUlEMSBhbmQgUkFJRDEwIGFzIHJlY292ZXIgaXMgcGF1c2VkIHdoZW4gd3JpdGVzDQo+ PiA+aGFwcGVuLCBidXQgdGhhdCBpcyBub3QgdGhlIGNhc2UgZm9yIFJBSUQ1LCBzbyBpdCBpc24n dCBzYWZlIHRvIHRlc3QgYWdhaW5zdA0KPj4gPmN1cnJfcmVzeW5jIC0gaXQgZ2V0cyB1cGRhdGVk IGEgYml0IHRvbyBsYXRlci4NCj4+ID4NCj4+IC0+Y3Vycl9yZXN5bmMgKyBTVFJJUEVfU0VDVE9S UyBpcyB0aGUgbmV4dCBzdHJpcGUgd2hpY2ggd2lsbGJlIHJlcGxhY2VkLg0KPj4gSG93IGFib3V0 IHRoZSAtPmN1cnJfcmVzeW5jK1NUUklQRV9TRUNUT1JTPw0KPg0KPklmIHlvdSBhcmVuJ3QgY2Vy dGFpbiwgdGhlbiBuZWl0aGVyIGFtIEkuDQo+DQo+QXMgcmVzeW5jIGFuZCBub3JtYWwgd3JpdGVz IGNhbiBiZSBpbnRlcm1pbmdsZWQgeW91IHdvdWxkIG5lZWQgc29tZSBndWFyYW50ZWUNCj50aGF0 IGEgd3JpdGUgd291bGRuJ3QgYmUgbWlzc2VkLCBhbmQgdGhhdCBhbG1vc3QgY2VydGFpbmx5IG1l YW5zIGEgdGVzdCB1bmRlcg0KPmEgbG9jayBhZ2FpbnN0IHNvbWUgdmFsdWUgd2hpY2ggaXMgdXBk YXRlZCB1bmRlciBhIGxvY2suDQo+DQpZZXMgYXMgeW91IHNhaWQsIHdlIG11c3Qgbm90ICBsb3N0 IHRvIHdyaXRlLg0KQmVjYXVzZSB0aGUgbm9ybWFsIGlvIGFuZCByZXBsYWNlIGlvIGRvbid0IGdl dCB0aGUgc2FtZSBzdHJpcGUgYXQgdGhlIHNhbWUgdGltZS4NClNvIHRoZXJlIGFyZSB0d28gY2Fz ZXM6DQpBOiBpZiAoc2gtPnNlY3RvciA8IGN1cnJfcmVzeW5jKQ0KCUZvciB0aGlzIGNhc2Usd2l0 aG90IGRvdWJ0IGl0IG11c3QgYmUgd3JpdGUuIA0KQjogaWYgKHNoLT5zZWN0b3IgPj0gY3Vycl9y ZXN5bmMpDQoJRm9yIHNoLT5zZWN0b3IgPT0gY3Vycl9yZXN5bmMsIHRoaXMgY2FuJ3QgaGFwcGVu LiBCZWNhc2UgcmVwbGFjZSBtdXN0IHdhaXQgdGhpcyBzdHJpcGUuDQoJRm9yIHNoLT5zZWN0b3Ig PiBjdXJyX3Jlc3luYywgYWx0aG91Z2ggdGhlIHJlcGxhY2UgaW5jcmVhdGUgdGhlIC0+Y3Vycl9y ZXN5bmMuQnV0IGl0IGNhbid0IA0KICAgZ290IHRoZSBzdHJpcGUgd2hpY2ggc2gtPnNlY3RvciA9 PSBjdXJyX3Jlc3luYy4NCg0KU28gaSB0aGluayB0aGVyZSBpc24ndCBuZWVkIHNvbWUgbG9ja3Mg dG8gcHJvdGVjdC4NCkZvciB0aGUgYWJvdmUgcmVzdWx0LCB0aGUgYmFzZSBpcyB0aGUgcmVzeW5j IGFuZCBub3JtYWwgaW8gZG9uJ3QgZ2V0IHRoZSBzYW1lIHN0cmlwZSBhdCB0aGUgc2FtZSB0aW1l Lg0KDQoNCj4+IA0KPj4gPkFsc28geW91IG1lc3NlZCB1cCB0aGUgZm9ybWF0dGluZyBpbiByYWlk MTAuYw0KPj4gPg0KPj4gQ2FuIHlvdSBleHBsYWluIGluIGRldGFpbD8NCj4NCj4NCj4+PiAgCQlp ZiAocnJkZXYgJiYgKHRlc3RfYml0KEZhdWx0eSwgJnJyZGV2LT5mbGFncykNCj4+PiAtCQkJICAg ICAgfHwgdGVzdF9iaXQoVW5tZXJnZWQsICZycmRldi0+ZmxhZ3MpKSkNCj4+PiArCQkJfHwgdGVz dF9iaXQoVW5tZXJnZWQsICZycmRldi0+ZmxhZ3MpIHx8IA0KPj4+ICsJCQkodGVzdF9iaXQoUmVw bGFjZW1lbnQsICZycmRldi0+ZmxhZ3MpICYmDQo+Pj4gKwkJCWNvbmYtPm1kZGV2LT5jdXJyX3Jl c3luYyA8IHIxMF9iaW8tPnNlY3RvcikpKQ0KPg0KPlRleHQgdGhhdCBpcyBpbnNpZGUgcGFyZW50 aGVzZXMgKG9yIG90aGVyIGJyYWNrZXRzKSBzaG91bGQgbmV2ZXIgYmUgdG8gdGhlDQo+bGVmdCBv ZiB0aGUgb3BlbmluZyBwYXJlbnRoZXNpcyB1bmxlc3MgdGhhdCBwYXJlbnRoZXNpcyBpcyBhdCB0 aGUgZW5kIG9mIGENCj5saW5lLg0KPkluIHRoZSBvcmlnaW5hbCBjb2RlLCB0aGUgInx8IHRlc3Rf Yml0KFVubWVyZ2VkLi4uLi4iIHdhcyB0byB0aGUgcmlnaHQgb2YgdGhlDQo+JygnLiAgSW4geW91 ciB2ZXJzaW9uIGl0IHN0YXJ0cyB0byB0aGUgbGVmdCwgYW5kIHRoZSBsaW5lcyB5b3UgYWRkZWQg YWxzbw0KPnN0YXJ0IHRvIHRoZSBsZWZ0Lg0KPg0KVGhhbmtzIGZvciB0aGUgYWR2aXNlLiANCj4+ ID5JJ20gbm90IGNvbnZpbmNlZCB0aGlzIG9wdGltaXNhdGlvbiBpcyByZWFsbHkgd29ydGggaXQu DQo+PiA+DQo+PiBNYXliZSBmb3IgSEREIGRpc2ssIGl0IG9ubHkgaW1wcm92ZSBzcGVlZCBieSBy ZWR1Y2luZyBzb21lIHdyaXRlIG9wZXJhdGlvbi4NCj4+IEJ1dCBmb3Igc3NkIGRpc2ssIGl0IGNh biByZWR1Y2Ugb25lIHdyaXRlLg0KPg0KPlN0aWxsIGRvZXNuJ3Qgc291bmQgY29udmluY2luZy4N Cj4NCk1heWJlIGkgZG8gc29tZSB0ZXN0LkJ1dCBJIHN0aWxsIGluc2lzdCB0aGF0IHdyaXRlIHVz ZWxlc3MgZGF0YSBpcyB1c2VsZXNzLg0KDQpUaGFua3MhDQpKaWFucGVuZyBNYQ0K