From owner-freebsd-current@FreeBSD.ORG Wed Mar 25 09:41:40 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 283AF1065743 for ; Wed, 25 Mar 2009 09:41:40 +0000 (UTC) (envelope-from kevinxlinuz@163.com) Received: from m12-11.163.com (m12-11.163.com [220.181.12.11]) by mx1.freebsd.org (Postfix) with SMTP id 6F6CC8FC24 for ; Wed, 25 Mar 2009 09:41:39 +0000 (UTC) (envelope-from kevinxlinuz@163.com) Received: from [127.0.0.1] (unknown [60.191.86.3]) by smtp7 (Coremail) with SMTP id C8CowLDL0kdN_MlJvBkDLA--.62373S2; Wed, 25 Mar 2009 17:41:34 +0800 (CST) Message-ID: <49C9FC53.8070104@163.com> Date: Wed, 25 Mar 2009 17:41:39 +0800 From: kevin User-Agent: Thunderbird 2.0.0.21 (Windows/20090302) MIME-Version: 1.0 To: Mark Powell References: <49BD117B.2080706@163.com> <4F9C9299A10AE74E89EA580D14AA10A635E68A@royal64.emp.zapto.org> <49BE4EC1.90207@163.com> <20090325090456.G92412@rust.salford.ac.uk> In-Reply-To: <20090325090456.G92412@rust.salford.ac.uk> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-CM-TRANSID: C8CowLDL0kdN_MlJvBkDLA--.62373S2 X-Coremail-Antispam: 1Uf129KBjvdXoW7Gw1xZr4DCF4DZF13XF13Arb_yoWkCFX_u3 yvva4xAw13JF9rKFWavrs0yFZrGrW7Ww1UuryYkFnrJ345Ga98ZFnrZasaqr1xXa4rKr9x urnaqr18Aw17GjkaLaAFLSUrUUUUUbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnRJUUU TCb7IF0VCF04k20xv_GFyrM7k042IE42xK82IY64kIx2x0424lb7IF0VCFI7km07C26c80 4VAKzcIF0wAYjsxI4VWUCwAYFVCjjxCrM7AC8VAFwI0_Jr0_Gr1l1I0E4x80FVCIwcAKzI AtM7C26IkvcIIF6IxKo4kEV4yl1IIY67AEw4v_Jr0_Jr4l84ACjcxK6xIIjxv20xvE14v2 6w1j6s0DM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26rxl6s0DM28EF7xvwVC2z280aVAFwI 0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s0DM2vj6xkI62vS6c8GOVWUtr1r JFyl5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87 Iv67AKxVWxJVW8Jr1lF7xvr2IY64vIr41lFVAaXTZC67ZELSn0mTvEwaV2v3VFvVW8Mx02 cVAKzwCY02Avz4vE14v_GFWlc2IjII80xcxEwVWxJVW3JwCF04k20xvY0x0EwIxGrwCF72 vE52k0Y41lx4CE17CEb7AF67AKxVWUXVWUAbIYCTnIWIevJa73UjIFyTuYvj4RmzuXDUUU U X-CM-SenderInfo: pnhyx0x0ol03r26rljoofrz/ Cc: freebsd-current@freebsd.org Subject: Re: ZFS data error without reasons X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Mar 2009 09:41:42 -0000 Mark Powell wrote: > Kevin, > Did you fix your ZFS CRC errors? > I responded to your thread, but no-one got back to me. > I'm gonna start another thread later. > This time I re-made the zpool in 8 compatible with 7. Once the errors > started showing up in 8 I moved back to 7, on the same hardware, to > perform the scrub to prove the problem is with 8. The 1st scrub in 7 > found some errors, but of course it would if 8 had messed up the data. > Removed the few unimportant bad files (all were in snapshots). > Just performing the 2nd scrub in 7 now. If this comes back with no > errors, then we have stronger proof that there is some wrong, which > seems quite intermittent, in 8 that randomly writes bad data. > Cheers. > Yes，I can fix some ZFS CRC errors,and sometimes i can recover all error files.Before i run "zpool import backup" to mount the zpool on a usb hard disk, "zpool status" return no errors. When i copy files to the usb hard disk,soon I can get lots of file errors.After a reboot,if i run scrub,i can fix many errors. I just think copy files between two zpools, one is on local hard disk and the other one is on a usb hard disk, may easily reproduce the bug. Thanks, Kevin