From owner-freebsd-fs@FreeBSD.ORG Sat Dec 18 21:47:06 2010 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3B474106566B for ; Sat, 18 Dec 2010 21:47:06 +0000 (UTC) (envelope-from srg.gavrilov@gmail.com) Received: from mail-iy0-f182.google.com (mail-iy0-f182.google.com [209.85.210.182]) by mx1.freebsd.org (Postfix) with ESMTP id 005928FC2A for ; Sat, 18 Dec 2010 21:47:05 +0000 (UTC) Received: by iyb26 with SMTP id 26so1278877iyb.13 for ; Sat, 18 Dec 2010 13:47:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type; bh=wNnZP1zdJ5UlpWhqP6qEEMfB9uDF3+iAM35+qCkz+3o=; b=vgbRm3JtMCIBazs90Ex7boih2WQzTnQwfKyqGZaN6nhrZgCus+Dt/1NAEoDD5v41nE qWzy18tPgO29JkaPyN0j0DIapLSRNItnEKbAxSDljpzp8LQfwGOTLOkg6011leUOdAoO jkWnYbjCZa3dh5CiD5xVAXU5S0pOmUILWivkg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=r7p3FYnXdRSRVe89ZQXXZhvlL9uAL+PjDZcFiGK5FrgbMG5vcCG8ZfzJZW4Mrr6sgd Wv8cYQsx2TgaqPesWQy3BXYFXGuf6Q0gRajp0oZgPh3eedg7pj9LAAOuc9h37kMm5zB+ 0fbIk787muWB8trWKFqyrMtHLTpr3W33kmOGs= MIME-Version: 1.0 Received: by 10.42.241.195 with SMTP id lf3mr1102941icb.472.1292708824105; Sat, 18 Dec 2010 13:47:04 -0800 (PST) Received: by 10.42.150.65 with HTTP; Sat, 18 Dec 2010 13:47:04 -0800 (PST) In-Reply-To: <4D0D156B.1070402@jrv.org> References: <4D0D156B.1070402@jrv.org> Date: Sun, 19 Dec 2010 00:47:04 +0300 Message-ID: From: Sergey Gavrilov To: "James R. Van Artsdalen" Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-fs@freebsd.org Subject: Re: ZFS recovery after power failure X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 18 Dec 2010 21:47:06 -0000 System was 8.1 STABLE, when it failed. 8 Seagate Constellation SAS drives and 3ware 9690SA-8I controller (was in performance mode without BBU). I khow it's my mistake, I relied on UPS. And UPS (Symmetra RM) was the reason of the power failure. Another strange thing was happened as well. System as I said was 8.1 and always been 8.1 with ZFS ver. 15. But when I was trying to import pool I couldn't because of my vesion of ZFS is less than pool version. zpool upgrade -v shown ver. 14. I've upgraded system to 8.2-PRERELEASE. It's resolved problem with versions. By now I've recovery practically all data on pool using dd, od and the ZFS On-Disk Specificationpaper. Sorry for the buzz and my english. If any questions, I will grad to answer if it help somebody else. 2010/12/18 James R. Van Artsdalen > On 12/18/2010 2:21 AM, Sergey Gavrilov wrote: > > Hi all! > > After hard power off pool's faulted. > > When I'm trying zpool import pool2 I've got: > > cannot import 'pool2': I/O error > > I do know how to recover pools. But I do want to know how it failed. > > Please post the output of "uname -a" so we know what system and version > of FreeBSD was used. > > Also, what of hard disks are these and how are they attached to the system? > > -- Best regards, Sergey Gavrilov