From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-db5eur01on0096.outbound.protection.outlook.com ([104.47.2.96]:60237 "EHLO EUR01-DB5-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751468AbcG2NrQ (ORCPT ); Fri, 29 Jul 2016 09:47:16 -0400 From: =?utf-8?B?TGlib3IgS2xlcMOhxI0=?= To: "linux-btrfs@vger.kernel.org" Subject: Re: Btrfs send to send out metadata and data separately Date: Fri, 29 Jul 2016 13:14:44 +0000 Message-ID: <8930800.y3r4nzIv9U@libor-nb> References: <07e7aea4-ebc7-1c47-34fb-daaae42ab245@gmx.com> In-Reply-To: <07e7aea4-ebc7-1c47-34fb-daaae42ab245@gmx.com> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hello, just a little question on receiver point 0), see bellow Dne pátek 29. července 2016 20:40:38 CEST, Qu Wenruo napsal(a): > Hi Filipe, and maintainers, > > Receive will do the following thing first before recovering the > subvolume/snapshot: > > 0) Create temporary dir for data extents > Create a new dir with temporary name($data_extent), to put data > extents into it. These are the directories in format "o4095916-21925-0" on receiver side? I'm in middle of send/receive and i have over 300 thousand of them already. I was always told, that directory with lots of items suffers on performance (but i newer used btrfs before :), is that true? Should it be little structured (subdirs based on extent number, for example) ? Libor {.n++%ݶw{.n+{k~^nrzh&zzޗ++zfh~iz_j:+v)ߣm