From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Wilck Subject: Re: [PATCH] multipath-tools: improve processing efficiency for addition and deletion of multipath devices Date: Fri, 17 Feb 2017 10:48:44 +0100 Message-ID: <1487324924.4629.14.camel@suse.com> References: <1487228041-1228-1-git-send-email-tang.junhui@zte.com.cn> <1487279855.4629.8.camel@suse.com> <20170217053836.GV22981@octiron.msp.redhat.com> <20170217062158.GW22981@octiron.msp.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20170217062158.GW22981@octiron.msp.redhat.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: Benjamin Marzinski Cc: zhang.kai16@zte.com.cn, dm-devel@redhat.com, tang.junhui@zte.com.cn, tang.wenjun3@zte.com.cn, bart.vanassche@sandisk.com List-Id: dm-devel.ids T24gRnJpLCAyMDE3LTAyLTE3IGF0IDAwOjIxIC0wNjAwLCBCZW5qYW1pbiBNYXJ6aW5za2kgd3Jv dGU6Cj4gT24gVGh1LCBGZWIgMTYsIDIwMTcgYXQgMTE6Mzg6MzZQTSAtMDYwMCwgQmVuamFtaW4g TWFyemluc2tpIHdyb3RlOgo+ID4gPiA+ICsKPiA+ID4gPiArYm9vbAo+ID4gPiA+ICttZXJnZV9u ZWVkX3N0b3Aoc3RydWN0IHVldmVudCAqZWFybGllciwgc3RydWN0IHVldmVudCAqbGF0ZXIpCj4g PiA+ID4gK3sKPiA+ID4gPiArCS8qCj4gPiA+ID4gKwnCoCogZG0gdWV2ZW50IGRvIG5vdCB0cnkg dG8gbWVyZ2Ugd2l0aCBsZWZ0IHVldmVudHMKPiA+ID4gPiArCcKgKi8KPiA+ID4gPiArCWlmICgh c3RybmNtcChsYXRlci0+a2VybmVsLCAiZG0tIiwgMykpCj4gPiA+ID4gKwkJcmV0dXJuIHRydWU7 Cj4gPiA+ID4gKwo+ID4gPiA+ICsJLyoKPiA+ID4gPiArCcKgKiB3ZSBjYW4gbm90IG1ha2UgYSBq dWdlbWVudCB3aXRob3V0IHd3aWQsCj4gPiA+ID4gKwnCoCogc28gaXQgaXMgc2Vuc2libGUgdG8g c3RvcCBtZXJnaW5nCj4gPiA+ID4gKwnCoCovCj4gPiA+ID4gKwlpZiAoIWVhcmxpZXItPnd3aWQg fHwgIWxhdGVyLT53d2lkKQo+ID4gPiA+ICsJCXJldHVybiB0cnVlOwo+ID4gPiA+ICsJLyoKPiA+ ID4gPiArCcKgKiB1ZXZlbnRzIG1lcmdpbmcgc3RvcGVkCj4gPiA+ID4gKwnCoCogd2hlbiB3ZSBt ZWV0IGFuIG9wcG9zaXRlIGFjdGlvbiB1ZXZlbnQgZnJvbSB0aGUKPiA+ID4gPiBzYW1lIExVTgo+ ID4gPiA+IHRvIEFWT0lECj4gPiA+ID4gKwnCoCogImFkZCBwYXRoMSB8cmVtb3ZlIHBhdGgxIHxh ZGQgcGF0aDIgfHJlbW92ZSBwYXRoMgo+ID4gPiA+IHxhZGQKPiA+ID4gPiBwYXRoMyIKPiA+ID4g PiArCcKgKiB0byBtZXJnZSBhcyAicmVtb3ZlIHBhdGgxLCBwYXRoMiIgYW5kICJhZGQgcGF0aDEs Cj4gPiA+ID4gcGF0aDIsCj4gPiA+ID4gcGF0aDMiCj4gPiA+ID4gKwnCoCogT1IKPiA+ID4gPiAr CcKgKiAicmVtb3ZlIHBhdGgxIHxhZGQgcGF0aDEgfHJlbW92ZSBwYXRoMiB8YWRkIHBhdGgyCj4g PiA+ID4gfHJlbW92ZQo+ID4gPiA+IHBhdGgzIgo+ID4gPiA+ICsJwqAqIHRvIG1lcmdlIGFzICJh ZGQgcGF0aDEsIHBhdGgyIiBhbmQgInJlbW92ZSBwYXRoMSwKPiA+ID4gPiBwYXRoMiwKPiA+ID4g PiBwYXRoMyIKPiA+ID4gPiArCcKgKiBTTwo+ID4gPiA+ICsJwqAqIHdoZW4gd2UgbWVldCBhIG5v bi1jaGFuZ2UgdWV2ZW50IGZyb20gdGhlIHNhbWUgTFVOCj4gPiA+ID4gKwnCoCogd2l0aCB0aGUg c2FtZSB3d2lkIGFuZCBkaWZmZXJlbnQgYWN0aW9uCj4gPiA+ID4gKwnCoCogaXQgd291bGQgYmUg YmV0dGVyIHRvIHN0b3AgbWVyZ2luZy4KPiA+ID4gPiArCcKgKi8KPiA+ID4gPiArCWlmICghc3Ry Y21wKGVhcmxpZXItPnd3aWQsIGxhdGVyLT53d2lkKSAmJgo+ID4gPiA+ICsJwqDCoMKgwqBzdHJj bXAoZWFybGllci0+YWN0aW9uLCBsYXRlci0+YWN0aW9uKSAmJgo+ID4gPiA+ICsJwqDCoMKgwqBz dHJjbXAoZWFybGllci0+YWN0aW9uLCAiY2hhbmdlIikgJiYKPiA+ID4gPiArCcKgwqDCoMKgc3Ry Y21wKGxhdGVyLT5hY3Rpb24sICJjaGFuZ2UiKSkKPiA+ID4gPiArCQlyZXR1cm4gdHJ1ZTsKPiA+ ID4gPiArCj4gPiA+ID4gKwlyZXR1cm4gZmFsc2U7Cj4gPiA+ID4gK30KPiA+ID4gCj4gPiA+IEkg a25vdyB5b3UgZGlzY3Vzc2VkIHRoaXMgd2l0aCBCZW4gYmVmb3JlLCBidXQgc3RpbGwgaGF2ZSBz b21lCj4gPiA+IHRyb3VibGUKPiA+ID4gd2l0aCBpdC7CoAo+ID4gPiAKPiA+ID4gVGhlIGZpcnN0 IGNhc2Ugc2hvdWxkIGhhdmUgYmVlbiByZWR1Y2VkIHRvICJyZW1vdmUgcGF0aDEgfCByZW1vdmUK PiA+ID4gcGF0aDIKPiA+ID4gPiBhZGQgcGF0aDMiIGJ5IGZpbHRlcmluZyBiZWZvcmVoYW5kLsKg SSBzdXBwb3NlIHlvdSB3YW50IHRvIGF2b2lkCj4gPiA+ID4gdGhpcwo+ID4gPiAKPiA+ID4gc2Vx dWVuY2UgYmVjYXVzZSBpdCBjb3VsZCBsZWF2ZSB1cyB3aXRob3V0IHBhdGhzIHRlbXBvcmFyaWx5 LAo+ID4gPiBjYXVzaW5nCj4gPiA+IG11bHRpcGF0aGQgdG8gZGVzdHJveSB0aGUgbWFwLiBCdXQg SSBkb24ndCB1bmRlcnN0YW5kIHdoYXQgInN0b3AKPiA+ID4gbWVyZ2luZyIgYnV5cyB5b3UgaGVy ZSAtIGlmIHlvdSBwcm9jZXNzIHRoZSBldmVudHMgb25lLWJ5LW9uZSwKPiA+ID4geW91IG1heQo+ ID4gPiBhbHNvIGhhdmUgMCBwYXRocyBhdCBzb21lIHBvaW50LsKgCj4gPiAKPiA+IFdlbGwsIGJl Y2F1c2Ugb2YgdGhlIGZpbHRlcmluZyAsIHlvdSB3aWxsIG5ldmVyIGFjdHVhbGx5IHN0b3AKPiA+ IG1lcmdpbmcKPiA+IGluIHRoaXMgY2FzZSwgbGlrZSB5b3UgbWVudGlvbmVkLgo+IAo+IE9yLCBp ZiBJIGFjdHVhbGx5IHJlYWQgYmV0dGVyLCBJIHdvdWxkIHNlZSB0aGF0IHlvdSB3aWxsIHN0b3AK PiBtZXJnaW5nLgo+IEkgY2FuJ3QgdGhpbmsgb2YgYW55IHByb2JsZW1zIGluIHRoZW9yeSB3aXRo IG1lcmdpbmcgYWRkcyBhZnRlcgo+IHJlbW92ZXMKPiBpbiB0aGUgc2ltcGxlIGNhc2UgYXQgbGVh c3QuCj4gCj4gPiA+IEluIHRoZSBzZWNvbmQgY2FzZSwgd2Uga25vdyBhbGwgZXZlbnRzIGluIHRo ZSBzZXF1ZW5jZSBoYXZlIHRoZQo+ID4gPiBzYW1lCj4gPiA+IFdXSUQ7IGluIHRoaXMgY2FzZSBJ IHRoaW5rIGl0IHdvdWxkIGJlIHNhZmUgdG8gZmlsdGVyIGF3YXkKPiA+ID4gInJlbW92ZSIKPiA+ ID4gZXZlbnRzIGJ5IHN1YnNlcXVlbnQgImFkZCIgZXZlbnRzLCBlbmRpbmcgdXAgd2l0aCAiYWRk IHBhdGgxfCBhZGQKPiA+ID4gcGF0aDJ8IHJlbW92ZSBwYXRoMyIuIEJ1dCBJIG1heSBiZSBvdmVy bG9va2luZyBzb21ldGhpbmcgaGVyZS4KPiA+IAo+ID4gV2UgY2FuJ3QgZmlsdGVyIG91dCB0aGUg cmVtb3ZlIHBhdGggZXZlbnRzIGluIHRoaXMgY2FzZS4gSWYgeW91Cj4gPiBoYXZlCj4gPiAKPiA+ IGFkZCBzZGIgfCByZW1vdmUgc2RiCj4gPiAKPiA+IFlvdSBrbm93IHRoYXQgc2RiIGluIHRoZSBy ZW1vdmUgZXZlbnQgaXMgcmVmZXJyaW5nIHRvIHRoZSBzYW1lCj4gPiBkZXZpY2UgYXMKPiA+IHNk YiBpbiB0aGUgYWRkIGV2ZW50LiBJZiB5b3UgaGF2ZQo+ID4gCj4gPiByZW1vdmUgc2RiIHwgYWRk IHNkYgo+ID4gCj4gPiBUaGVyZSBpcyBubyBndWFyYW50ZWUgdGhhdCBzZGIgaW4gdGhlIGFkZCBl dmVudCBpcyByZWZlcnJpbmcgdG8gdGhlCj4gPiBzYW1lCj4gPiBMVU4gYXMgc2RiIGluIHRoZSBy ZW1vdmUgZXZlbnQuIE9uY2UgdGhlIGRldmljZSBnZXRzIHJlbW92ZWQgdGhhdAo+ID4gbmFtZQo+ ID4gY2FuIGdldCByZXVzZWQgZm9yIGFueXRoaW5nLgo+IAo+IE9yIHlvdSBjb3VsZCBjaGFuZ2Ug dGhlIGZpbHRlcmluZyBjb2RlIHRvIHZlcmlmeSB0aGF0IHRoZSB3d2lkcwo+IG1hdGNoZWQuCgpB RkFJQ1MgdGhpcyBpcyBhbHJlYWR5IHRoZSBjYXNlIGluIHRoaXMgY29kZSBwYXRoLiBtZXJnZV9u ZWVkc19zdG9wKCkKaXMgcnVuIGFmdGVyIGRldGVybWluaW5nIHRoZSBXV0lELCBhbmQgd2lsbCBv bmx5IGV2ZXIgYWN0IG9uIGRldmljZXMKd2l0aCB0aGUgc2FtZSBXV0lELgoKPiBIb3dldmVyLCB3 aGlsZSB0aGUgZGV2aWNlIHdvdWxkIGJlIGZvciB0aGUgc2FtZSBMVU4sIGl0IG1pZ2h0IGJlIGEK PiBkaWZmZXJlbnQgSV9UIE5leHVzLCBzbyB5b3Ugc3RpbGwgZG9uJ3Qgd2FudCB0byBmaWx0ZXIg dGhlIHJlbW92ZSBvZgo+IHRoYXQKPiBzcGVjaWZpYyBkZXZpY2UuwqAKCkkgZmlndXJlIHRoaXMg Y291bGQgYmUgaGFuZGxlZCBpbiB1ZXZfYWRkX3BhdGgoKSBieSBub3Qgc2ltcGx5CnJldHVybmlu ZyBpZiBhbiBhZGQgZXZlbnQgZm9yIGFuIGFscmVhZHkgZXhpc3RpbmcgZGV2aWNlIHdhcwplbmNv dW50ZXJlZC4gQnV0IEkgYWdyZWUgdGhhdCB3b3VsZCBiZSBhbm90aGVyLCBzZXBhcmF0ZSwgcGF0 Y2guCgpSZWdhcmRzCk1hcnRpbgoKLS0gCkRyLiBNYXJ0aW4gV2lsY2sgPG13aWxja0BzdXNlLmNv bT4sIFRlbC7CoCs0OSAoMCk5MTEgNzQwNTMgMjEwNwpTVVNFIExpbnV4IEdtYkgsIEdGOiBGZWxp eCBJbWVuZMO2cmZmZXIsIEphbmUgU21pdGhhcmQsIEdyYWhhbSBOb3J0b24KSFJCIDIxMjg0IChB RyBOw7xybmJlcmcpCgotLQpkbS1kZXZlbCBtYWlsaW5nIGxpc3QKZG0tZGV2ZWxAcmVkaGF0LmNv bQpodHRwczovL3d3dy5yZWRoYXQuY29tL21haWxtYW4vbGlzdGluZm8vZG0tZGV2ZWw=