From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-Status: No, score=-3.4 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from mail-qt1-x836.google.com (mail-qt1-x836.google.com [IPv6:2607:f8b0:4864:20::836]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id C0EB61F990 for ; Thu, 6 Aug 2020 17:32:40 +0000 (UTC) Received: by mail-qt1-x836.google.com with SMTP id c12so27952990qtn.9 for ; Thu, 06 Aug 2020 10:32:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=google; h=date:from:to:cc:subject:message-id:mail-followup-to:references :mime-version:content-disposition:in-reply-to; bh=D79qAsBzzO1UOCNlTJQpMRFnfEGNQ1pHhJOFuO2N53Q=; b=GcM+J8CuJO82D/skY7p7kvb2w8G+C0lKb7JYtw4vC3RHD1ebpXA7JRbvEvwkV00ym6 fHFqn8qwTasq1IHjjnJ9fKJmn9DynhSXaHxpqkf+3mb3KWCKaEPcrqTo1Hes1TN5dj4s FVKIMWIoNSocae6MMg9d/DgJRdIt7z4ytFMQ0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id :mail-followup-to:references:mime-version:content-disposition :in-reply-to; bh=D79qAsBzzO1UOCNlTJQpMRFnfEGNQ1pHhJOFuO2N53Q=; b=mCWv563pfm0AR3k59Eqzuo2540ykE85gEgVnKZhOv1jykh2XysyHC7v5kV2MbHPTll 3T3nV24L77KG98ZxYBaddVQx8pm1O7EWjs5CyFqynXX9u9qsq3IsRB7Hzi+j6jAfZE7r bzBPf2k4SxolyjaA4sSjMtqCReUap/BWlsgFvnSoxPjLhMBwMUDVCVcndFBLyhA1K6DK bVkYubhsUHLvDi9asY+5Zb2/yga9jYqrWRbtIfpR3pvR6QMk4UJHY5e/tjsxOzDGOVJd xsfKdSmn+RxnQn0eU/GzavI88vYcHFJ2sgKReQpaJjlPYZEaFU1lENJUR+dYJpc16bTC qJzQ== X-Gm-Message-State: AOAM530KlVjjrR3AFV74/93nmR286B/DqRvyhCkmhET94AlMVnjbkla1 t0X1xxEP0EMvrskFBA6aEbD5LA== X-Google-Smtp-Source: ABdhPJy4+NUw0jNxXvxsy61dpJ4mC7cxBn+Sy6Ox5+nMGGod6GWTv7NY7QBrWsMfVIL5n3y3iYBPKA== X-Received: by 2002:ac8:73c3:: with SMTP id v3mr10198925qtp.266.1596735159495; Thu, 06 Aug 2020 10:32:39 -0700 (PDT) Received: from chatter.i7.local (107-179-243-71.cpe.teksavvy.com. [107.179.243.71]) by smtp.gmail.com with ESMTPSA id c33sm5586837qtk.40.2020.08.06.10.32.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Aug 2020 10:32:38 -0700 (PDT) Date: Thu, 6 Aug 2020 13:32:37 -0400 From: Konstantin Ryabitsev To: Eric Wong Cc: meta@public-inbox.org Subject: Re: what storage system(s) are you using? Message-ID: <20200806173237.jf7nrfbw5v7uvl5s@chatter.i7.local> Mail-Followup-To: Eric Wong , meta@public-inbox.org References: <20200805031127.GA11917@dcvr> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20200805031127.GA11917@dcvr> List-Id: On Wed, Aug 05, 2020 at 03:11:27AM +0000, Eric Wong wrote: > I've been mostly using ext4 on SSDs since I started public-inbox > and it works well. As you know, I hope to move lore.kernel.org to a system with a hybrid lvm-cache setup, specifically: 12 x 1.8TB rotational drives set up in a lvm raid-6 array 2 x 450GB SSD drives are lvm-cache volume This gives up 18TB capacity with a 900GB cache layer, and the FS on top of that is XFS. This is what is currently serving mirrors.edge.kernel.org (4 nodes around the world). Current lore.kernel.org just uses an AWS EBS disk, but since AWS is a blackbox, there's no knowing what sorts of levels of abstraction are beneath that. -K