From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CDA11C433F5 for ; Sun, 30 Jan 2022 22:12:07 +0000 (UTC) Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-590-1BfRdXaFNum3G3TuG4NIDg-1; Sun, 30 Jan 2022 17:12:02 -0500 X-MC-Unique: 1BfRdXaFNum3G3TuG4NIDg-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 07F6A1083F61; Sun, 30 Jan 2022 22:11:56 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A8A635ED33; Sun, 30 Jan 2022 22:11:48 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 424DA4BB7C; Sun, 30 Jan 2022 22:11:38 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id 20UMBZIT004748 for ; Sun, 30 Jan 2022 17:11:36 -0500 Received: by smtp.corp.redhat.com (Postfix) id BB2BC53CF; Sun, 30 Jan 2022 22:11:35 +0000 (UTC) Received: from mimecast-mx02.redhat.com (mimecast01.extmail.prod.ext.rdu2.redhat.com [10.11.55.17]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B639E53C8 for ; Sun, 30 Jan 2022 22:11:32 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-1.mimecast.com [205.139.110.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 97FB285A5A8 for ; Sun, 30 Jan 2022 22:11:32 +0000 (UTC) Received: from mail.gathman.org (mail.gathman.org [70.184.247.44]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-656-4OBkwGbcNwiPM-J94658FQ-1; Sun, 30 Jan 2022 17:11:30 -0500 X-MC-Unique: 4OBkwGbcNwiPM-J94658FQ-1 Received: from elissa.gathman.org ([IPv6:2001:470:8:809::1d4b]) (authenticated bits=0) by mail.gathman.org (8.14.7/8.14.7) with ESMTP id 20ULdPVQ007001 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Sun, 30 Jan 2022 16:39:25 -0500 Message-ID: <30ba3f0683afb9c3b60d96ac0019ced4ce9bb5b8.camel@gathman.org> From: "Stuart D. Gathman" To: LVM general discussion and development , Zdenek Kabelac Date: Sun, 30 Jan 2022 16:39:30 -0500 In-Reply-To: References: <6da8a7fc-4ca4-9c1d-c547-dcba827c5c99@gmail.com> <4bb347f0-b63b-d6f6-d501-1318053d0e56@gmail.com> User-Agent: Evolution 3.40.4 (3.40.4-2.fc34) MIME-Version: 1.0 X-MIME-Autoconverted: from 8bit to quoted-printable by mail.gathman.org id 20ULdPVQ007001 X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-MIME-Autoconverted: from quoted-printable to 8bit by lists01.pubmisc.prod.ext.phx2.redhat.com id 20UMBZIT004748 X-loop: linux-lvm@redhat.com Subject: Re: [linux-lvm] LVM performance vs direct dm-thin X-BeenThere: linux-lvm@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-lvm-bounces@redhat.com Errors-To: linux-lvm-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=linux-lvm-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 T24gU3VuLCAyMDIyLTAxLTMwIGF0IDExOjQ1IC0wNTAwLCBEZW1pIE1hcmllIE9iZW5vdXIgd3Jv dGU6Cj4gT24gU3VuLCBKYW4gMzAsIDIwMjIgYXQgMTE6NTI6NTJBTSArMDEwMCwgWmRlbmVrIEth YmVsYWMgd3JvdGU6Cj4gPiAKPiAKPiA+IFNpbmNlIHlvdSBtZW50aW9uZWQgWkZTIC0geW91IG1p Z2h0IHdhbnQgZm9jdXMgb24gdXNpbmcgJ1pGUy1vbmx5Jwo+ID4gc29sdXRpb24uCj4gPiBDb21i aW5pbmfCoCBaRlMgb3IgQnRyZnMgd2l0aCBsdm0yIGlzIGFsd2F5cyBnb2luZyB0byBiZSBhIHBh aW5mdWwKPiA+IHdheSBhcwo+ID4gdGhvc2UgZmlsZXN5c3RlbXMgaGF2ZSB0aGVpciBvd24gdm9s dW1lIG1hbmFnZW1lbnQuCj4gCj4gQWJzb2x1dGVseSHCoCBUaGF0IHNhaWQsIEkgZG8gd29uZGVy IHdoYXQgeW91ciB0aG91Z2h0cyBvbiB1c2luZyBsb29wCj4gZGV2aWNlcyBmb3IgVk0gc3RvcmFn ZSBhcmUuwqAgSSBrbm93IHRoZXkgYXJlIHNsb3dlciB0aGFuIHRoaW4KPiB2b2x1bWVzLAo+IGJ1 dCB0aGV5IGFyZSBhbHNvIG11Y2ggZWFzaWVyIHRvIG1hbmFnZSwgc2luY2UgdGhleSBhcmUganVz dCBvcmRpbmFyeQo+IGRpc2sgZmlsZXMuwqAgQW55IGZpbGVzeXN0ZW0gd2l0aCByZWZsaW5rIGNh biBwcm92aWRlIHRoZSBuZWVkZWQKPiBjb3B5LW9uLXdyaXRlIHN1cHBvcnQuCgpJIHVzZSBsb29w IGRldmljZXMgZm9yIHRlc3QgY2FzZXMgLSBlc3BlY2lhbGx5IHdpdGggc2ltdWxhdGVkIElPCmVy cm9ycy4gIERldnMgcmVhbGx5IGFwcHJlY2lhdGUgaGF2aW5nIGFuIGVhc3kgcmVwcm9kdWNlciBm b3IKZGF0YWJhc2UvZmlsZXN5c3RlbSBidWdzICh3aGljaCBvZnRlbiBpbnZvbHZlIGhhbmRsaW5n IG9mIElPIGVycm9ycykuIApCdXQgbm90IGZvciBwcm9kdWN0aW9uIFZNcy4KCkkgdXNlIExWTSBh cyBmbGV4aWJsZSBwYXJ0aXRpb25zIChpLmUuIG9ubHkgY2xhc3NpYyBMVnMsIG5vIHRoaW4gcG9v bCkuCkNsYXNzaWMgTFZzIHBlcmZvcm0gbGlrZSBwYXJ0aXRpb25zLCBsaXRlcmFsbHkgdXNpbmcg dGhlIHNhbWUgZHJpdmVyCihkZXZpY2UgbWFwcGVyKSB3aXRoIGEgc21hbGwgbnVtYmVyIG9mIGV4 dGVudHMsIGFuZCBhcmUgaWYgYW55dGhpbmcKbW9yZSByZWNvdmVyYWJsZSB0aGFuIHBhcnRpdGlv biB0YWJsZXMuICBXZSB1c2VkIHRvIHB1dCBMVk0gb24gYmFyZQpkcml2ZXMgKGxpa2UgQUlYIGRp ZCkgLSB3aG8gbmVlZHMgYSBwYXJ0aXRpb24gdGFibGU/ICBCdXQgb24gV2ludGVsLAp5b3UgbmVl ZCBhIHBhcnRpdGlvbiB0YWJsZSBmb3IgRUZJIGFuZCBzbyB0aGF0IGFsaWVuIG9wZXJhdGluZyBz eXN0ZW1zCmtub3cgdGhlcmUgaXMgc29tZXRoaW5nIGFscmVhZHkgb24gYSBkaXNrLgoKWW91ciBW TSB1c2FnZSBpcyBkaWZmZXJlbnQgZnJvbSBvdXJzIC0geW91IHNlZW0gdG8gbmVlZCB0byBjbG9u ZSBhbmQKYWN0aXZhdGUgYSBWTSBxdWlja2x5IChsaWtlIGEgdnBzIHByb3ZpZGVyIG1pZ2h0IG5l ZWQgdG8gZG8pLiAgV2UKZ2VuZXJhbGx5IGhhdmUgdG8gYnV5IG1vcmUgUkFNIHRvIGFkZCBhIG5l dyBWTSA6LSksIHNvIHBlcmZvcm1hbmNlIG9mCmNyZWF0aW5nIGEgbmV3IExWIGlzIHRoZSBsZWFz dCBvZiBvdXIgd29ycmllcy4KClNpbmNlIHdlIHVzZSBMVnMgbGlrZSBwYXJ0aXRpb25zIC0gbWl4 aW5nIHdpdGggYnRyZnMgaXMgbm90IGFuIGlzc3VlLiAKSnVzdCB1c2UgdGhlIExWcyBsaWtlIHBh cnRpdGlvbnMuICBJIGhhdmVuJ3QgdHJpZWQgWkZTIG9uIGxpbnV4IC0gaXQKbWF5IGhhdmUgTFZN IGxpa2UgZmVhdHVyZXMgdGhhdCBjb3VsZCBmaWdodCB3aXRoIExWTS4gIFpGUyB3b3VsZCBiZSBt eQpmaXJzdCBjaG9pY2Ugb24gYSBCU0QgYm94LgoKV2UgZG8gbm90IHVzZSBMVk0gcmFpZCAtIGJ1 dCBlaXRoZXIgcnVuIG1kcmFpZCB1bmRlcm5lYXRoLCBvciBsZXQgYnRyZnMKZG8gaXQncyBkYXRh IGR1cGxpY2F0aW9uIHRoaW5nIHdpdGggTFZzIG9uIGRpZmZlcmVudCBzcGluZGxlcy4KCgoKCgpf X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1sdm0g bWFpbGluZyBsaXN0CmxpbnV4LWx2bUByZWRoYXQuY29tCmh0dHBzOi8vbGlzdG1hbi5yZWRoYXQu Y29tL21haWxtYW4vbGlzdGluZm8vbGludXgtbHZtCnJlYWQgdGhlIExWTSBIT1ctVE8gYXQgaHR0 cDovL3RsZHAub3JnL0hPV1RPL0xWTS1IT1dUTy8=