From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from resqmta-po-06v.sys.comcast.net ([96.114.154.165]:53427 "EHLO resqmta-po-06v.sys.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750855AbaJIQ6I (ORCPT ); Thu, 9 Oct 2014 12:58:08 -0400 Message-ID: <5436BE9B.90300@shroop.net> Date: Thu, 09 Oct 2014 09:58:03 -0700 From: Rich Rauenzahn MIME-Version: 1.0 To: bo.li.liu@oracle.com CC: Rich Rauenzahn , linux-btrfs@vger.kernel.org Subject: Re: Two uncorrectable errors across RAID1 at same logical block? References: <20141007020538.GA3187@localhost.localdomain> <54334D5E.9000300@shroop.net> <20141008142030.GA13823@localhost.localdomain> <543562C6.3030604@shroop.net> <20141009071337.GA13470@localhost.localdomain> In-Reply-To: <20141009071337.GA13470@localhost.localdomain> Content-Type: text/plain; charset=windows-1252; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 10/9/2014 12:13 AM, Liu Bo wrote: > sudo ./btrfs inspect-internal logical-resolve -v 58464632832 / $ sudo ./btrfs inspect-internal logical-resolve -v 58464632832 / ioctl ret=0, total_size=4096, bytes_left=4080, bytes_missing=0, cnt=0, missed=0 I also tried -P and -s 100000000 .... Also did this: $ sudo ./btrfs-map-logical -l 58464632832 -o /tmp/58464632832 /dev/sdf3 mirror 1 logical 58464632832 physical 1536393216 device /dev/sdg3 mirror 2 logical 58464632832 physical 58464632832 device /dev/sdf3 And looked at the 4k block. strings doesn't show anything useful: +V0T" File doesn't recognize it as anything particular. Weird. I have one other clue which I think is irrelevant. I had another error on a different drive/different fs and it turned out to be the vmem file for a virtual machine under vmware workstation. I deleted the file since it was just the memory image and the error went away. It was easy to map the bad block to the file from dmesg and the inode. I may have also created a vm at some point on this drive we're looking at now and then moved it. So I think that information is not relevant... but maybe you've seen this before.