From owner-freebsd-stable@FreeBSD.ORG Wed Jul 8 08:19:40 2009 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C0F32106564A for ; Wed, 8 Jul 2009 08:19:40 +0000 (UTC) (envelope-from ronald-freebsd8@klop.yi.org) Received: from smtp-out1.tiscali.nl (smtp-out1.tiscali.nl [195.241.79.176]) by mx1.freebsd.org (Postfix) with ESMTP id 871A28FC14 for ; Wed, 8 Jul 2009 08:19:40 +0000 (UTC) (envelope-from ronald-freebsd8@klop.yi.org) Received: from [212.123.145.58] (helo=sjakie.klop.ws) by smtp-out1.tiscali.nl with esmtp id 1MOSNP-0000Nw-3m for ; Wed, 08 Jul 2009 10:19:39 +0200 Received: from 82-170-177-25.ip.telfort.nl (localhost [127.0.0.1]) by sjakie.klop.ws (Postfix) with ESMTP id 60E6AD4F6 for ; Wed, 8 Jul 2009 10:19:38 +0200 (CEST) Date: Wed, 08 Jul 2009 10:19:37 +0200 To: "freebsd-stable@freebsd.org" From: "Ronald Klop" Content-Type: text/plain; format=flowed; delsp=yes; charset=us-ascii MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Message-ID: User-Agent: Opera Mail/9.64 (FreeBSD) Subject: Zfs on usb-disk checksum errors? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Jul 2009 08:19:41 -0000 Hi. I put zfs on my external usb-disk, so I can backup my harddisk with zfs send/receive. I now have corruption on this volume. [root@sjakie ~]# zpool status -v pool: extern state: ONLINE status: One or more devices has experienced an error resulting in data corruption. Applications may be affected. action: Restore the file in question if possible. Otherwise restore the entire pool from backup. see: http://www.sun.com/msg/ZFS-8000-8A scrub: scrub completed after 0h2m with 0 errors on Wed Jul 8 00:35:09 2009 config: NAME STATE READ WRITE CKSUM extern ONLINE 1 0 0 da0 ONLINE 9 0 0 errors: Permanent errors have been detected in the following files: <0x3f>:<0xf5d6> I don't really understand which files have corruption. :-( In my syslog is this: (repeated quite often) Jul 8 10:00:37 sjakie kernel: (da0:umass-sim0:0:0:0): SYNCHRONIZE CACHE(10). CDB: 35 0 0 0 0 0 0 0 0 0 Jul 8 10:00:37 sjakie kernel: (da0:umass-sim0:0:0:0): CAM Status: SCSI Status Error Jul 8 10:00:37 sjakie kernel: (da0:umass-sim0:0:0:0): SCSI Status: Check Condition Jul 8 10:00:37 sjakie kernel: (da0:umass-sim0:0:0:0): ILLEGAL REQUEST asc:20,0 Jul 8 10:00:37 sjakie kernel: (da0:umass-sim0:0:0:0): Invalid command operation code Jul 8 10:00:37 sjakie kernel: (da0:umass-sim0:0:0:0): Unretryable error and sometimes Jul 8 10:00:35 sjakie root: ZFS: vdev I/O failure, zpool=extern path=/dev/da0 offset=127558877184 size=3072 error=5 Jul 8 10:00:35 sjakie root: ZFS: vdev I/O failure, zpool=extern path=/dev/da0 offset=127558877184 size=3072 error=5 Jul 8 10:00:35 sjakie root: ZFS: zpool I/O failure, zpool=extern error=5 With varying offsets and sizes. What can I conclude from this? Is the disk failing? Is the 'Invalid command operation code' something to worry about? It didn't show up when the disk was UFS. I reinstalled the pool but the read-errors showed up again. Thanks for any advice, Ronald.