From owner-freebsd-questions@freebsd.org Sun Oct 16 00:57:15 2016 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 0F648C061B3 for ; Sun, 16 Oct 2016 00:57:15 +0000 (UTC) (envelope-from greg.marsh@gmail.com) Received: from mail-lf0-x231.google.com (mail-lf0-x231.google.com [IPv6:2a00:1450:4010:c07::231]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 8A85E888 for ; Sun, 16 Oct 2016 00:57:14 +0000 (UTC) (envelope-from greg.marsh@gmail.com) Received: by mail-lf0-x231.google.com with SMTP id l131so180680460lfl.2 for ; Sat, 15 Oct 2016 17:57:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:from:date:message-id:subject:to; bh=w+7KQlwi+HZbPpPFkOtM7tIXdxSSoJfs4sZ2/Uks/z0=; b=JGCRfbCWCVOPE18AZfSyU6NRjqA9tft188Qx1yrrnODlLogh3b/TbKC+/7pzLT1QS5 tmXwHulUiUxNYy7ui1kRZS4e6Jp0V9afBZc6CgXVLaXSCFGAXOTx4jakq6PuoXSdY6Ep 7a/CkiBJ6nKYtSOupmpcqXXtzZtqn7v2JPThZbOZQzzZN4TWzVheJyFkgS/fkYUKSDuD kATsKJM6iuIxLhn1x3dFL8PheGjHBu77knatBy+yVJ2khgcLYCEiFEMSd2G5VMTHzOc2 5/fBw6ciZ8blwti7gLuGeZYvskLvCjaLNNyf6hkvWxBdfW0e4tDbNy3O79qmhGGluNOE pyqQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=w+7KQlwi+HZbPpPFkOtM7tIXdxSSoJfs4sZ2/Uks/z0=; b=bppkyD11y7jk/L/f0OXJNh1NDN0AusG4OLOrn8yVa8INzcYkxQToCoqVZa6sZ92QED bPzGAjhrLZfGcHc7YLqlgeYgU2Xffo0kK5Odx7IalCofLIuVcKdXtToQSUqlBQaKT9of dmyGAx8gDRkwpCaxQJ0Jw6F7wPXCyV7Uiv8wFGwktYYoeVLkhJKo1xGUmfq4vZQS6hme DI0LdJGPPK3N0PeR0XJMemsI0i+3fqulpmhZhlmZ/21RrSXVBB1Em05BnwtyWhxdYI9S wmY3BNHKEcPkJsdKdWwlKWjBSddqWtFJJFfcuA0NMVr3hrN4sUsHap6PcjGeb+yGvCC4 k81g== X-Gm-Message-State: AA6/9RmsMKhwOrdnOEsiYvxrZdgglx24EtWDCGM1FBb4vwIx503nV4gzeAQ7k/EWT25ZNpKs3AP70cbdVEZkEw== X-Received: by 10.25.165.144 with SMTP id o138mr8265130lfe.66.1476579432353; Sat, 15 Oct 2016 17:57:12 -0700 (PDT) MIME-Version: 1.0 Received: by 10.25.234.136 with HTTP; Sat, 15 Oct 2016 17:56:51 -0700 (PDT) From: Greg Marsh Date: Sat, 15 Oct 2016 20:56:51 -0400 Message-ID: Subject: Help finding out find why a ZFS pool vanished. To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 16 Oct 2016 00:57:15 -0000 Hello, :) A few days ago, I came home from work to find that the four disk ZFS pool which is the bulk of my home file/backup system, had logically vanished. I upgraded to FreeBSD 11.0 last week and all seemed well. Since upgrading, I had done a system backup and a scrub of both my zroot and storage pools. Storage is the one that vanished. A couple days ago, when trying to copy my desktop files to my backup system, I got NFS mount errors. I was quite sore & tired from work (after 25 years of sysadmining, I'm now doing home renovations), so I went with the Windows admin response of 'reboot everything', on both my desktop and server. Then when trying to remount the NFS shares from my FreeBSD system didn't work, I df'd on my FreeBSD server to find the /storage pool was not there. I was eventually able to get my storage pool back through 'zpool import -af' That being said, I'd like some guidance in finding out why the pool took itself offline. From there, hopefully prevent it from happening again. There were no error messages in dmesg nor /var/log/messages All the drives showed up without error in /dev and gave no indication of issue on boot. All four drives are all WD Red 2tb. All 4 drives are attached to a four port SATA card driven by a SiI3124. The SATA controller has worked without issue for me for the past couple years - at least since FreeBSD 10.1 I do run the system headless and I admit I didn't put a monitor to it before rebooting initially. I was also sloppy about my initial data gathering. :( I did eventually reboot with a monitor and the BIOS did not report nor have history of any SMART errors with any drives. Again, if anyone has any posthumous zfs troubleshooting tips, I'd appreciate them very much. Cheers, Greg