From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1Nbuwi-0006TX-I0 for garchives@archives.gentoo.org; Mon, 01 Feb 2010 12:00:00 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id BEB98E07AA; Mon, 1 Feb 2010 11:58:53 +0000 (UTC) Received: from smtpq1.gn.mail.iss.as9143.net (smtpq1.gn.mail.iss.as9143.net [212.54.34.164]) by pigeon.gentoo.org (Postfix) with ESMTP id 96269E07AA for ; Mon, 1 Feb 2010 11:58:53 +0000 (UTC) Received: from [212.54.34.140] (helo=smtp9.gn.mail.iss.as9143.net) by smtpq1.gn.mail.iss.as9143.net with esmtp (Exim 4.69) (envelope-from ) id 1Nbuvc-0002QD-Fq for gentoo-user@lists.gentoo.org; Mon, 01 Feb 2010 12:58:52 +0100 Received: from 5353258a.cable.casema.nl ([83.83.37.138] helo=data.hosts.antarean.org) by smtp9.gn.mail.iss.as9143.net with esmtp (Exim 4.69) (envelope-from ) id 1Nbuvb-0003v6-31 for gentoo-user@lists.gentoo.org; Mon, 01 Feb 2010 12:58:51 +0100 Received: from localhost (localhost [127.0.0.1]) by data.hosts.antarean.org (Postfix) with ESMTP id 8843827887 for ; Mon, 1 Feb 2010 12:58:50 +0100 (CET) X-Virus-Scanned: amavisd-new at antarean.org Received: from data.hosts.antarean.org ([127.0.0.1]) by localhost (data.hosts.antarean.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 8w7NuvBju5-R for ; Mon, 1 Feb 2010 12:58:50 +0100 (CET) Received: from eve.localnet (eve.hosts.antarean.org [10.1.5.100]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by data.hosts.antarean.org (Postfix) with ESMTPS id 6862424C27 for ; Mon, 1 Feb 2010 12:58:50 +0100 (CET) From: "J. Roeleveld" To: gentoo-user@lists.gentoo.org Subject: [gentoo-user] Raid 5 creation is slow - Can this be done quicker? Date: Mon, 1 Feb 2010 12:58:49 +0100 User-Agent: KMail/1.12.3 (Linux/2.6.30-gentoo-r5; KDE/4.3.3; x86_64; ; ) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Message-Id: <201002011258.49893.joost@antarean.org> X-ZiggoSMTP-MailScanner-Information: Please contact the ISP for more information X-ZiggoSMTP-MailScanner-ID: 1Nbuvb-0003v6-31 X-ZiggoSMTP-MailScanner: Found to be clean X-ZiggoSMTP-MailScanner-SpamCheck: geen spam, SpamAssassin (niet cached, score=-2.599, vereist 5, autolearn=not spam, BAYES_00 -2.60) X-ZiggoSMTP-MailScanner-From: joost@antarean.org X-Spam-Status: No X-Archives-Salt: 6d673d02-e105-4fd4-8b3f-7712102b1e7e X-Archives-Hash: d91872ba77b776da25bee7e4e432283c Hi All, I am currently installing a new server and am using Linux software raid to merge 6 * 1.5TB drives in a RAID5 configuration. Creating the RAID5 takes over 20 hours (according to " cat /proc/mdstat ") Is there a way that will speed this up? The drives are new, but contain random data left over from some speed and reliability tests I did. I don't care about keeping the current 'data', as long as when the array is reliable later. Can I use the " --assume-clean " option with mdadm and then expect it to keep working, even through reboots? Or is this a really bad idea? Many thanks, Joost Roeleveld