From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f49.google.com ([74.125.82.49]:34477 "EHLO mail-wm0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750734AbcGDSJb convert rfc822-to-8bit (ORCPT ); Mon, 4 Jul 2016 14:09:31 -0400 Received: by mail-wm0-f49.google.com with SMTP id 187so22972353wmz.1 for ; Mon, 04 Jul 2016 11:09:30 -0700 (PDT) Received: from [127.0.0.1] ([188.122.213.4]) by smtp.googlemail.com with ESMTPSA id z1sm3760814wjh.14.2016.07.04.11.09.28 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 04 Jul 2016 11:09:29 -0700 (PDT) To: linux-btrfs@vger.kernel.org From: =?UTF-8?B?VG9tw6HFoSBIcmRpbmE=?= Subject: Unable to mount degraded RAID5 Message-ID: Date: Mon, 4 Jul 2016 20:09:29 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-2 Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hello, one of my 3 disks failed in RAID5. After that, fs is unable to mount. Any help on what to try next would be appreciated. sudo btrfs version btrfs-progs v4.6.1 -- I installed 4.6.1 just now. I ran rescue on 4.4 uname -a Linux uncik-srv 4.4.0-24-generic #43-Ubuntu SMP Wed Jun 8 19:27:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux sudo mount -t btrfs -o ro,recovery /dev/sdc /shares mount: wrong fs type, bad option, bad superblock on /dev/sdc, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so. sudo btrfs rescue chunk-recover /dev/sdc Scanning: 2517981163520 in dev0, 3166618750976 in dev1Segmentation fault (core dumped) sudo btrfs filesystem show /dev/sda warning, device 3 is missing checksum verify failed on 12678831570944 found 3DC57E3E wanted 771D2379 checksum verify failed on 12678831570944 found 3DC57E3E wanted 771D2379 bytenr mismatch, want=12678831570944, have=10160133442474442752 Couldn't read chunk tree Label: none uuid: 2dab74bb-fc73-4c47-a413-a55840f6f71e Total devices 3 FS bytes used 3.80TiB devid 1 size 3.64TiB used 1.92TiB path /dev/sdb devid 2 size 3.64TiB used 1.92TiB path /dev/sda *** Some devices missing sudo btrfs restore /dev/sda /mnt warning, device 3 is missing checksum verify failed on 12678831570944 found 3DC57E3E wanted 771D2379 checksum verify failed on 12678831570944 found 3DC57E3E wanted 771D2379 bytenr mismatch, want=12678831570944, have=10160133442474442752 Couldn't read chunk tree Could not open root, trying backup super warning, device 3 is missing warning, device 1 is missing bytenr mismatch, want=12678831570944, have=0 Couldn't read chunk tree Could not open root, trying backup super warning, device 3 is missing warning, device 1 is missing bytenr mismatch, want=12678831570944, have=0 Couldn't read chunk tree Could not open root, trying backup super sudo btrfs check /dev/sda warning, device 3 is missing checksum verify failed on 12678831570944 found 3DC57E3E wanted 771D2379 checksum verify failed on 12678831570944 found 3DC57E3E wanted 771D2379 bytenr mismatch, want=12678831570944, have=10160133442474442752 Couldn't read chunk tree Couldn't open file system Log http://sebsauvage.net/paste/?236c3f6f238dbf26#4kM3tx+CjlA8ke9yMH+gD/QDsnjNnBK2i5Do4CXwD04= Thank you Tomas --- Tato zpráva byla zkontrolována na viry programem Avast Antivirus. https://www.avast.com/antivirus