From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-vk0-f43.google.com ([209.85.213.43]:36132 "EHLO mail-vk0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751665AbbHYRBb (ORCPT ); Tue, 25 Aug 2015 13:01:31 -0400 Received: by vkif69 with SMTP id f69so69902119vki.3 for ; Tue, 25 Aug 2015 10:01:30 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: Date: Tue, 25 Aug 2015 11:01:30 -0600 Message-ID: Subject: Re: Unmountable file system From: Chris Murphy To: Btrfs BTRFS , dan@hentschels.com Content-Type: text/plain; charset=UTF-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Tue, Aug 25, 2015 at 9:11 AM, Dan Hentschel wrote: > Btrfs v3.12 I'd say that version of btrfs-progs is too old for reliable btrfs check --repair to be much help and could make things worse. > # btrfs restore /dev/mapper/kingston-streamer2 /mnt > checksum verify failed on 85360640 found 6934D1E8 wanted C1A46C13 > checksum verify failed on 85360640 found 6934D1E8 wanted C1A46C13 > Csum didn't match > offset is 20480 > failed to inflate: -3 Sounds like one of the compression related bugs, I forget when those were fixed. Try a newer btrfs-progs for restore. If it still fails, it should be possible to use -i to ignore the checksum errors. https://btrfs.wiki.kernel.org/index.php/Restore -- Chris Murphy