Salvage files from broken btrfs

On 03.11.2018 at 02:05 Qu Wenruo wrote: > On 2018/11/3 上午1:18, M. Klingmann wrote: >> On 02.11.2018 at 15:45 Qu Wenruo wrote: >>> On 2018/11/2 下午10:30, M. Klingmann wrote: On 31.10.2018 at 01:03 Qu Wenruo wrote: > My plan for such recovery is: > > 1) btrfs ins dump-super to make

Re: Salvage files from broken btrfs

On 2018/11/3 上午1:18, M. Klingmann wrote: > On 02.11.2018 at 15:45 Qu Wenruo wrote: >> On 2018/11/2 下午10:30, M. Klingmann wrote: >>> On 31.10.2018 at 01:03 Qu Wenruo wrote: My plan for such recovery is: 1) btrfs ins dump-super to make sure system chunk array is valid 2)

Re: Salvage files from broken btrfs

On 02.11.2018 at 15:45 Qu Wenruo wrote: > On 2018/11/2 下午10:30, M. Klingmann wrote: >> On 31.10.2018 at 01:03 Qu Wenruo wrote: >>> My plan for such recovery is: >>> >>> 1) btrfs ins dump-super to make sure system chunk array is valid >>> 2) btrfs-find-root to find any valid chunk tree blocks >>>

Re: Salvage files from broken btrfs

On 2018/11/2 下午10:30, M. Klingmann wrote: > > On 31.10.2018 at 01:03 Qu Wenruo wrote: >> My plan for such recovery is: >> >> 1) btrfs ins dump-super to make sure system chunk array is valid >> 2) btrfs-find-root to find any valid chunk tree blocks >> 3) pass that chunk tree bytenr to

Re: Salvage files from broken btrfs

On 31.10.2018 at 01:03 Qu Wenruo wrote: > My plan for such recovery is: > > 1) btrfs ins dump-super to make sure system chunk array is valid > 2) btrfs-find-root to find any valid chunk tree blocks > 3) pass that chunk tree bytenr to btrfs-restore >Unfortunately, btrfs-restore doesn't support

Re: Salvage files from broken btrfs

On 31.10.2018 at 05:56 Chris Murphy wrote: > On Tue, Oct 30, 2018 at 4:11 PM, Mirko Klingmann wrote: >> Hi all, >> >> my btrfs root file system on a SD card broke down and did not mount anymore. > It might mount with -o ro,nologreplay > > Typically an SD card will break in a way that it can't

Re: Salvage files from broken btrfs

On Tue, Oct 30, 2018 at 4:11 PM, Mirko Klingmann wrote: > Hi all, > > my btrfs root file system on a SD card broke down and did not mount anymore. It might mount with -o ro,nologreplay Typically an SD card will break in a way that it can't write, and mount will just hang (with mmcblk errors).

Re: Salvage files from broken btrfs

On 2018/10/31 上午4:11, Mirko Klingmann wrote: > Hi all, > > my btrfs root file system on a SD card broke down and did not mount anymore. > > In retrospective, I think it reached its endurance, so I know that there > is nothing to repair. All I want to do is to salvage some configuration > and

Salvage files from broken btrfs

Hi all, my btrfs root file system on a SD card broke down and did not mount anymore. In retrospective, I think it reached its endurance, so I know that there is nothing to repair. All I want to do is to salvage some configuration and data files from the remains left in my ISO file copy. The SD

Re: broken btrfs filesystem

On 2017-12-12 11:24, Hugo Mills wrote: On Tue, Dec 12, 2017 at 04:18:09PM +, Neal Becker wrote: Is it possible to check while it is mounted? Certainly not while mounted read-write. While mounted read-only -- I'm not certain. Possibly. In theory, it is possible, but I think that the

Re: broken btrfs filesystem

On Tue, Dec 12, 2017 at 04:18:09PM +, Neal Becker wrote: > Is it possible to check while it is mounted? Certainly not while mounted read-write. While mounted read-only -- I'm not certain. Possibly. Hugo. > On Tue, Dec 12, 2017 at 9:52 AM Hugo Mills wrote: > > >

Re: broken btrfs filesystem

On Tue, Dec 12, 2017 at 09:02:56AM -0500, Neal Becker wrote: > sudo ls -la ~/ > [sudo] password for nbecker: > ls: cannot access '/home/nbecker/.bash_history': No such file or directory > ls: cannot access '/home/nbecker/.bash_history': No such file or directory > ls: cannot access

broken btrfs filesystem

sudo ls -la ~/ [sudo] password for nbecker: ls: cannot access '/home/nbecker/.bash_history': No such file or directory ls: cannot access '/home/nbecker/.bash_history': No such file or directory ls: cannot access '/home/nbecker/.bash_history': No such file or directory ls: cannot access

Re: how to repair or access broken btrfs?

Am 14.11.2017 um 18:45 schrieb Andrei Borzenkov: > 14.11.2017 12:56, Stefan Priebe - Profihost AG пишет: >> Hello, >> >> after a controller firmware bug / failure i've a broken btrfs. >> >> # parent transid verify failed on 181846016 wanted 143404 found 143399 &

Re: how to repair or access broken btrfs?

14.11.2017 12:56, Stefan Priebe - Profihost AG пишет: > Hello, > > after a controller firmware bug / failure i've a broken btrfs. > > # parent transid verify failed on 181846016 wanted 143404 found 143399 > > running repair, fsck or zero-log always results in the same fail

how to repair or access broken btrfs?

Hello, after a controller firmware bug / failure i've a broken btrfs. # parent transid verify failed on 181846016 wanted 143404 found 143399 running repair, fsck or zero-log always results in the same failure message: extent-tree.c:2725: alloc_reserved_tree_block: BUG_ON `ret` triggered, value

Re: Repair broken btrfs raid6?

OK, I see. Maybe there is even more damaged... Now I finished my second backup of the important data and just killed this damaged raid. I created a new one and now I am restoring my data. Let's hope it will last longer this time :) Regards, Tobias 2015-02-15 4:30 GMT+01:00 Liu Bo

Re: Repair broken btrfs raid6?

On Fri, Feb 13, 2015 at 10:54:22PM +0100, Tobias Holst wrote: It's me again. I just found out why my system crashed during the back up. I don't know what it means, but maybe it helps you? The warning means somehow checksum becomes inconsistent with file extents, but no clear clues about the

Re: Repair broken btrfs raid6?

On Fri, Feb 13, 2015 at 12:22:16AM +0100, Tobias Holst wrote: Hi I don't remember the exact mkfs.btrfs options anymore but ls /sys/fs/btrfs/[UUID]/features/ shows the following output: big_metadata compress_lzo extended_iref mixed_backref raid56 Well... mkfs.btrfs can specify a '-m'

Re: Repair broken btrfs raid6?

2015-02-13 9:06 GMT+01:00 Liu Bo bo.li@oracle.com: On Fri, Feb 13, 2015 at 12:22:16AM +0100, Tobias Holst wrote: Hi I don't remember the exact mkfs.btrfs options anymore but ls /sys/fs/btrfs/[UUID]/features/ shows the following output: big_metadata compress_lzo extended_iref

Re: Repair broken btrfs raid6?

It's me again. I just found out why my system crashed during the back up. I don't know what it means, but maybe it helps you? WARNING: CPU: 7 PID: 22878 at /home/kernel/COD/linux/fs/btrfs/extent_io.c:5203 read_extent_buffer+0xe3/0x120 [btrfs]() Modules linked in: raid0(E) ufs(E) qnx4(E)

Re: Repair broken btrfs raid6?

Hi I don't remember the exact mkfs.btrfs options anymore but ls /sys/fs/btrfs/[UUID]/features/ shows the following output: big_metadata compress_lzo extended_iref mixed_backref raid56 I also tested my device with a short hdparm -tT /dev/dm5 and got /dev/mapper/sdc_crypt: Timing cached

Re: Repair broken btrfs raid6?

Ed Tomlinson e...@aei.ca schrieb: On Tuesday, February 10, 2015 2:17:43 AM EST, Kai Krakow wrote: Tobias Holst to...@tobby.eu schrieb: and btrfs scrub status /[device] gives me the following output: scrub status for [UUID] scrub started at Mon Feb 9 18:16:38 2015 and was aborted after 2008

Re: Repair broken btrfs raid6?

Hmm, it looks like it is getting worse... Here are some parts of my syslog, including two crashed btrfs-threads: So I am still getting many of these: BTRFS (device dm-5): parent transid verify failed on 25033166798848 wanted 108976 found 108958 BTRFS warning (device dm-5): page private not

Re: Repair broken btrfs raid6?

2015-02-10 8:17 GMT+01:00 Kai Krakow hurikha...@gmail.com: Tobias Holst to...@tobby.eu schrieb: and btrfs scrub status /[device] gives me the following output: scrub status for [UUID] scrub started at Mon Feb 9 18:16:38 2015 and was aborted after 2008 seconds total bytes scrubbed: 113.04GiB

Re: Repair broken btrfs raid6?

Tobias Holst posted on Mon, 09 Feb 2015 23:45:21 +0100 as excerpted: So a short summary: - btrfs raid6 on 3.19.0 with btrfs-progs 3.19-rc2 - does not mount at boot up, open_ctree failed (disk 3) - mounts successfully after bootup - randomly checksum verify failed (disk 5) - balance and

Repair broken btrfs raid6?

Hi I'm having some trouble with my six-drives btrfs raid6 (each drive encrypted with LUKS). At first: Yes, I do have backups, but it may take at least days, maybe weeks or even some month to restore everything from the (offside) backups. So it is not essential to recover the data, but would be

Re: Especially broken btrfs

Hi, I probably should have used a better subject title. Also, I submitted this without knowing if it would be helpful or not. If it can be used in a good way Great! If not, then no problem. I appreciate you getting back with me, Marc. Thanks. :) On 03/30/2014 12:50 AM, Marc MERLIN wrote: On

Re: Especially broken btrfs

Hi, I hadn't noticed this post, I think I know the reason this time : you have used USB you bad guy! I think USB does not support flush / barrier , which is mandatory for BTRFS to work correctly in case of power loss. For most filesystems actually, but the damages suffered by COW filesystems

Re: Especially broken btrfs

Bob Marley posted on Mon, 31 Mar 2014 19:04:38 +0200 as excerpted: Hi, I hadn't noticed this post, I think I know the reason this time : you have used USB you bad guy! I think USB does not support flush / barrier , which is mandatory for BTRFS to work correctly in case of power loss. For

Re: Especially broken btrfs

On Thu, Mar 20, 2014 at 11:21:27PM -0400, sepero...@gmx.com wrote: Hello all. I submit bugs to different foss projects regularly, but I don't really have a bug report this time. I have a broken filesystem to report. And I have no idea how to reproduce it. I am including a link to the

Especially broken btrfs

Hello all. I submit bugs to different foss projects regularly, but I don't really have a bug report this time. I have a broken filesystem to report. And I have no idea how to reproduce it. I am including a link to the filesystem itself, because it appears to be unrepairable and unrestorable.

Re: Need help mounting broken btrfs Fedora 19

Thanks Wang, This was the result: root@ubuntu:/downloads/btrfs-progs# ./btrfs chunk-recover /dev/sdc2 no recoverable chunk Recover the chunk tree successfully. Still unable to mount. On Sun, Jul 14, 2013 at 2:03 PM, Wang Shilong wangshilong1...@gmail.com wrote: Hello, You call pull from:

Need help mounting broken btrfs Fedora 19

I need some help as may have lost some number of files on a btrfs raid 1 volume. I'm not quite sure what happend which, I know, only adds to the problem. On my computer #1 I had only a month or so ago installed Fedora 19 Beta and at the time of install chose BTRFS, raid 1. Recently one of the

Re: Need help mounting broken btrfs Fedora 19

On Sun, Jul 14, 2013 at 01:43:41PM +, Dave Barnum wrote: I need some help as may have lost some number of files on a btrfs raid 1 volume. I'm not quite sure what happend which, I know, only adds to the problem. On my computer #1 I had only a month or so ago installed Fedora 19 Beta and

Re: Need help mounting broken btrfs Fedora 19

Thanks for your reply. I have tried -o degraded and recover but I keep getting the error messages above in dmesg such as: btrfs: failed to read chunk root on sdc2 On Sun, Jul 14, 2013 at 1:49 PM, Hugo Mills h...@carfax.org.uk wrote: On Sun, Jul 14, 2013 at 01:43:41PM +, Dave Barnum wrote:

Re: Need help mounting broken btrfs Fedora 19

Hello, You call pull from: git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs.git Miao implement chunk tree recover function, you can try it with like. btrfs chunk-recover /dev Maybe this can help you. Thanks, Wang I need some help as may have lost some number of

Broken btrfs filesystem

Hi, I have problems with a btrfs filesystem, and am holding on to it for some more days before reformat. What I am interested about is two things: 1. Is there any way to restore more stuff from the filesystem then already fetched (it would help to get the system up faster, but nothing really of

Broken btrfs filesystem

Hi, I have problems with a btrfs filesystem, and am holding on to it for some more days before reformat. What I am interested about is two things: 1. Is there any way to restore more stuff from the filesystem then already fetched (it would help to get the system up faster, but nothing really of

Re: Broken btrfs?

On 21.07.2011 23:13, Jan Schubert wrote: On 07/18/2011 10:29 AM, Jan Schmidt wrote: If you are on a 3.0 kernel, get the most current version of btrfs tools from Hugo's integration-20110705 branch at http://git.darksatanic.net/repo/btrfs-progs-unstable.git/ and do a scrub. -Jan Thx Jan, I

Re: Broken btrfs?

On 07/22/2011 09:24 AM, Jan Schmidt wrote: Scrub should be printing inode numbers to your system log while detecting those errors. If you want to know the exact files corrupted, you can grab my patch set with subject Btrfs scrub: print path to corrupted files and trigger nodatasum fixup from

Re: Broken btrfs?

On 07/18/2011 10:29 AM, Jan Schmidt wrote: If you are on a 3.0 kernel, get the most current version of btrfs tools from Hugo's integration-20110705 branch at http://git.darksatanic.net/repo/btrfs-progs-unstable.git/ and do a scrub. -Jan Thx Jan, I did. This is the result: scrub status for

Re: Broken btrfs?

On 17.07.2011 16:01, Jan Schubert wrote: Jan Schubert jan.schubert at gmx.li writes: Please find some data and log below. Is there any chance to fix this? After playing around (incl. deleting the log) I get the strong feeling it has something todo with compression=lzo. Dunno why it started

Re: Broken btrfs?

Jan Schubert jan.schubert at gmx.li writes: Please find some data and log below. Is there any chance to fix this? After playing around (incl. deleting the log) I get the strong feeling it has something todo with compression=lzo. Dunno why it started suddenly but I disabled compression and did

Broken btrfs?

For some while now I can reproduce a kernel oops. The reading of the oops migt point to btrfs so I also did a btrfsk which gives me this warning before aborting: warning, start mismatch 13636968448 13636997120 I also find several entries in my dmesg concerning missing or wrong csum. Please

Re: Broken btrfs; btrfsck and btrfs-debug-tree core dumps

Hello Chris, Chris Mason hat am Wed 17. Feb, 09:11 (-0500) geschrieben: On Tue, Feb 16, 2010 at 11:15:44AM +0100, Jörg Sommer wrote: I've an utterly broken btrfs that makes btrfsck and btrfs-debug-tree (version 0.19) die with a core dump. Are you interested in this filesystem? Unfortunely

Re: Broken btrfs; btrfsck and btrfs-debug-tree core dumps

On Tue, Feb 16, 2010 at 11:15:44AM +0100, Jörg Sommer wrote: Hi, I've an utterly broken btrfs that makes btrfsck and btrfs-debug-tree (version 0.19) die with a core dump. Are you interested in this filesystem? Unfortunely, it has a size of 1TB and contains the backups of our customers

Broken btrfs; btrfsck and btrfs-debug-tree core dumps

Hi, I've an utterly broken btrfs that makes btrfsck and btrfs-debug-tree (version 0.19) die with a core dump. Are you interested in this filesystem? Unfortunely, it has a size of 1TB and contains the backups of our customers. Hence, I can't publish it. How can we come together? Core