From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay2.corp.sgi.com [137.38.102.29]) by oss.sgi.com (Postfix) with ESMTP id 776577CA0 for ; Sat, 26 Mar 2016 08:50:41 -0500 (CDT) Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by relay2.corp.sgi.com (Postfix) with ESMTP id 4C64E304039 for ; Sat, 26 Mar 2016 06:50:38 -0700 (PDT) Received: from mail1.g1.pair.com (mail1.g1.pair.com [66.39.3.162]) by cuda.sgi.com with ESMTP id HdVfD9M93KUxdIIH (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Sat, 26 Mar 2016 06:50:35 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by mail1.g1.pair.com (Postfix) with SMTP id D980B2CE4D for ; Sat, 26 Mar 2016 09:50:34 -0400 (EDT) Received: from harpe.intellique.com (labo.djinux.com [82.225.196.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail1.g1.pair.com (Postfix) with ESMTPSA id 8160A2CE3D for ; Sat, 26 Mar 2016 09:50:34 -0400 (EDT) Date: Sat, 26 Mar 2016 14:50:37 +0100 From: Emmanuel Florac Subject: Weird behaviour of mkfs.xfs Message-ID: <20160326145037.3b5c6302@harpe.intellique.com> MIME-Version: 1.0 List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: "xfs@oss.sgi.com" Hi all, I'm testing NVMe storage, and it works fine so far. However here's something bizarre: I've made a RAID-0 array of 2 NVMe drives with mdadm, and mkfs.xfs /dev/md0 starts an endless, full speed write of the array: avg-cpu: %user %nice %system %iowait %steal %idle 0,21 0,00 0,17 12,39 0,00 87,24 Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s avgrq-sz avgqu-sz await r_await w_await svctm %util sda 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 nvme0n1 0,00 0,00 0,00 5152,33 0,00 1288,03 511,98 1019,53 197,87 0,00 197,87 0,19 100,00 nvme1n1 0,00 0,00 0,00 5154,67 0,00 1288,67 512,00 50,62 9,82 0,00 9,82 0,19 100,00 dm-0 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 md0 0,00 0,00 0,00 5152,00 0,00 2576,00 1024,00 0,00 0,00 0,00 0,00 0,00 0,00 I'm running a plain vanilla 4.4.6 kernel; the xfs_progs are only slightly older, being version 4.2. Nothing will stop the crazy mkfs.xfs, but a hard reboot. Any idea? -- ------------------------------------------------------------------------ Emmanuel Florac | Direction technique | Intellique | | +33 1 78 94 84 02 ------------------------------------------------------------------------ _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs