From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mxex2.tik.uni-stuttgart.de (mxex2.tik.uni-stuttgart.de [129.69.192.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6E2D78F59 for ; Sun, 28 Apr 2024 23:40:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=129.69.192.21 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714347651; cv=none; b=PmkfUeFJikc+AfBpP8cEJAyi/oa0q27/4jKxwbC3YaMttm/YcWPgcKmdegkyCtVCvREfqwZcVeCh6kbS2G4wmDcJBQSnj3GTL9Ez7Sk0D8caHYuBLBmc3ZJ29W7y6Fx2KVWcJvvomF0mLhZmvBPRFxDAUn3KXX1dz3yO/m04o+o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714347651; c=relaxed/simple; bh=hQAnokbNxHMgBnu+13E7xjaSPQVXFxoX1uvKCAAuPR4=; h=Date:From:To:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=b2N6QkSTIL21LQutdbkfIswvKZS5ZcBxom6Pwu64E5aLD8I+KX0zsAmxUOgZS87voVOWzOCAwJpUQ9eyhsIi9KOinO6lXNNz8Vg3U1IgbhZ/b1dy9iHIY9UlKTa1nVftPZ0pZGj+p35875XSMwKVpxayTXkAYdZQ6rvq0J+jsXw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rus.uni-stuttgart.de; spf=pass smtp.mailfrom=rus.uni-stuttgart.de; dkim=pass (2048-bit key) header.d=uni-stuttgart.de header.i=@rus.uni-stuttgart.de header.b=sCZJJ3Kf; arc=none smtp.client-ip=129.69.192.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rus.uni-stuttgart.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rus.uni-stuttgart.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=uni-stuttgart.de header.i=@rus.uni-stuttgart.de header.b="sCZJJ3Kf" Received: from localhost (localhost [127.0.0.1]) by mxex2.tik.uni-stuttgart.de (Postfix) with ESMTP id 5879F60DFB for ; Mon, 29 Apr 2024 01:31:36 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=uni-stuttgart.de; h=x-mailer:user-agent:content-disposition:content-type :content-type:mime-version:message-id:subject:subject:from:from :date:date; s=dkim; i=@rus.uni-stuttgart.de; t=1714347094; x= 1716085895; bh=hQAnokbNxHMgBnu+13E7xjaSPQVXFxoX1uvKCAAuPR4=; b=s CZJJ3KfHgru/uVkMVygAYiLHw1MPvakeD/Ncrcvhhx6MwAT1/2yEiXcmsAq+hW+S shskxrdr41rlsC8h4BZo5EZHsFjiX689XUAU/QdT1g+kXykWzT6pEYZqs4KLRVNa h0VD4S/geDyBPV9xbn0r3FeM7CL7eQxUe2ZXWdg7fI8T5Wjraqq8Pou7IDFW3ZPK TNQzu+Z7VmjRJGA8/6BOZXGIKr9DoV0IqPfzZQvjewTT7YGrG0nLXdxqy0n597Fk u2RFBCQpHX1kUVAHjmB9J2HrcpaPV3SxNoRx6luSQ+l2vi5fjRf+Pe12m1r1J4Sw 1U3A9ZJe08RX4VWZ/+fZQ== X-Virus-Scanned: USTUTT mailrelay AV services at mxex2.tik.uni-stuttgart.de Received: from mxex2.tik.uni-stuttgart.de ([127.0.0.1]) by localhost (mxex2.tik.uni-stuttgart.de [127.0.0.1]) (amavis, port 10031) with ESMTP id ODmgAhL-A5hh for ; Mon, 29 Apr 2024 01:31:34 +0200 (CEST) Received: from authenticated client (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mxex2.tik.uni-stuttgart.de (Postfix) with ESMTPSA Date: Mon, 29 Apr 2024 01:31:34 +0200 From: Ulli Horlacher To: linux-btrfs@vger.kernel.org Subject: 2 PB filesystem ok? Message-ID: <20240428233134.GA355040@tik.uni-stuttgart.de> Mail-Followup-To: linux-btrfs@vger.kernel.org Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) X-Mailer: smtpsend-20230822 We are planing to use a Seagate Exos Corvault System with 2 PB as the storage backend for restic backup. It has some hundreds hard disks and exports them as a single virtual disk (via SAS). Linux sees only a big SCSI disk. This special RAID is all in hardware, no need for BTRFS software RAID. So far my biggest btrfs filesystems have only about 100 TB. Is 2 PB ok for one btrfs filesystem? -- Ullrich Horlacher Server und Virtualisierung Rechenzentrum TIK Universitaet Stuttgart E-Mail: horlacher@tik.uni-stuttgart.de Allmandring 30a Tel: ++49-711-68565868 70569 Stuttgart (Germany) WWW: https://www.tik.uni-stuttgart.de/ REF:<20240428233134.GA355040@tik.uni-stuttgart.de>