From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mxex1.tik.uni-stuttgart.de (mxex1.tik.uni-stuttgart.de [129.69.192.20]) (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 0FAA048CF2 for ; Wed, 1 May 2024 08:57:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=129.69.192.20 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714553877; cv=none; b=HwGSZxQgxZ1NFH/mwaJV/b0LlZ/udi5kgkMwO6k142GhdhAz0EQj6uVKI2aN84XOph/TWuCCZOXTqRyIaeeUP3GYoESdPV1wtfKh5lHq7T6KPzDBb/ueleQPM4eJ3aGlIm5NDq35H4S8XcsN+3YShz6eHt/062OBwEjc5JUzsfQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714553877; c=relaxed/simple; bh=mvA208wV7zCoOgw5v3rnfMQNcpfiYuXMLTgg7fqIQuw=; h=Date:From:To:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=cQBGHQCGbda9P6rKO+7Z3bKBwQLQEBxRYx7pVtTAMzehQy1O3Us9vfHmK6b05BJsHPStiifdwNTdscxVYREGwAsdrUeYkA7AScELpksoDyvlc59539eacYmnaIlwvx51cpgX3r0mjYmyUL1AiQcZJXM923I4tibN7LjRaoj+eEE= 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=wUZmiRoM; arc=none smtp.client-ip=129.69.192.20 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="wUZmiRoM" Received: from localhost (localhost [127.0.0.1]) by mxex1.tik.uni-stuttgart.de (Postfix) with ESMTP id 04DF660E7C for ; Wed, 1 May 2024 10:50:15 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=uni-stuttgart.de; h=x-mailer:user-agent:in-reply-to:content-disposition :content-type:content-type:mime-version:references:message-id :subject:subject:from:from:date:date; s=dkim; i= @rus.uni-stuttgart.de; t=1714553413; x=1716292214; bh=mvA208wV7z CoOgw5v3rnfMQNcpfiYuXMLTgg7fqIQuw=; b=wUZmiRoM78JG0XhYak74iGG3qv jKHH5bIvW26Oe0n7XRNETr/muDc0u0d+F5qB5R8OCFN91fxaRy0/5YoCBzUYTtrL 7re/9rUCG4c65OH0VOE3X5L0cGBwq30i/hOo5yaugrifL7PwYDWSKqi0TyaX7nkv HhhMY4XPf5Ii6xX5jV2WJ4duy/z6h5bMRODyJ1PMnkCtr2zmDQW6n+4p6IdiESVM eGvIHFDpDn863rYQf1F322ZnMcZ/CaXTkA0IpxYfWdSeJgAgevn1ok+31TYQvFol bWfa7MIF34DRG3iMmOnx5AQdGm1B5oIYRDHNnjG1CI3uiJiUaUG6e5wRQTcA== X-Virus-Scanned: USTUTT mailrelay AV services at mxex1.tik.uni-stuttgart.de Received: from mxex1.tik.uni-stuttgart.de ([127.0.0.1]) by localhost (mxex1.tik.uni-stuttgart.de [127.0.0.1]) (amavis, port 10031) with ESMTP id TGu6BHMnog5T for ; Wed, 1 May 2024 10:50:13 +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 mxex1.tik.uni-stuttgart.de (Postfix) with ESMTPSA Date: Wed, 1 May 2024 10:50:12 +0200 From: Ulli Horlacher To: "linux-btrfs@vger.kernel.org" Subject: Re: 2 PB filesystem ok? Message-ID: <20240501085012.GA393383@tik.uni-stuttgart.de> Mail-Followup-To: "linux-btrfs@vger.kernel.org" References: <20240428233134.GA355040@tik.uni-stuttgart.de> <6609017e-8931-4559-b613-4b3e28d9fb48@wdc.com> 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 In-Reply-To: <6609017e-8931-4559-b613-4b3e28d9fb48@wdc.com> User-Agent: Mutt/1.5.23 (2014-03-12) X-Mailer: smtpsend-20230822 On Mon 2024-04-29 (12:34), Johannes Thumshirn wrote: > I have used 2PB filesystems in my RAID Stripe Tree test environment, but > for practical uses, I suggest you to enable the block-group tree feature > during mkfs time. I cannot find such an option in man-page for mkfs.btrfs -- 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:<6609017e-8931-4559-b613-4b3e28d9fb48@wdc.com>