similar to: Re: New btrfsck status

After upgrading from 2.6.39-rc7 to 2.6.39 this morning, I tried to mount my 3 disk btrfs volume (no subvolumes, space caching enabled, lzo compression) and received some parent transid errors (going back to rc7 didn''t help, though): btrfs: disk space caching is enabled parent transid verify failed on 6038227976192 wanted 337418 found 337853 parent transid verify failed on 6038227976192

Hi folks! Been using btrfs for quite a while now, worked great until now. Got power-loss on my machine and now i have the "parent transid verify failed on X wanted X found X" problem. So I can''t get it to mount. My btrfs is spread over sda (2tb), sdc(2tb), sdd(1tb). Is this something that an offline fsck could fix ? If so is the fsck-util being developed ? Is there a way to

Some programs like btrfsck should not be run on a mounted filesystem. This patch adds a check in btrfs_open_devices() for the mount status of every device belonging to the filesystem. The function check_mount() gets improved support for loopback devices. It now detects if the program is run on the file that is being used by the loopback device. Signed-off-by: Andi Drebes

I have accidently damaged the first block(s) of a btrfs partition and can''t mount it anymore. I can see that my data is still intact by running a command like: cat /dev/sda5 | hexdump -C | more Do any (experimental) tools exist which would allow me to recover the files? Thank you -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a

Hello, trying out btrfs on my linux installation. I am running Funtoo with Linux 3.0 kernel. After a reboot kernel panicked (no access to error log since it is my root volume that failed). I get this using a rescue cd (2.6.38, btrfs v 0.19) and then trying to mount : [  752.129118] btrfs bad tree block start 0 131072 [  752.129152] btrfs: failed to read chunk root on sda5 [  752.132190] btrfs:

Heyho! (This is using btrfs from Debian''s 2.6.32 2.6.32-3-kirkwood kernel (-9 package; btrfs tools is v0.19-16-g075587c) A few observations about btrfsck: a btrfsck run on a 2T volume (4 disks) on a QNAP appliance (512M ram) got killed by Mr. OOM Killer. Initially, I was quite surprised. I''m only moderately surprised now since it might well be that I forgot to enable

Is it expected that running btrfsck more than once will keep reporting errors? Below is the end of a btrfsck output when run the second time. backpointer mismatch on [111942471680 32768] owner ref check failed [111942471680 32768] ref mismatch on [111942504448 40960] extent item 1, found 0 Incorrect local backref count on 111942504448 root 5 owner 160739 offset 3440640 found 0 wanted 1 back

Hi, I thought that I would attempt a quick little patch that will make btrfsck into a No-op when called as fsck.btrfsck. The reasoning is that the FAQ states that it is recommended and safe to do so, and the current 12.04 version of Ubuntu just symlinks fsck.btrfsck to btrfsck instead of /bin/true. PS - Apologies if I mess this git send-email up! Dan McGrath (1): btrfs-progs: No-op when

Hi All, I''m trying to repair a broken fs using btrfsck and am hitting a failed assertion. I''d appreciate any suggestions for what to do next. Is there any thing I can do to help fix this bug? Any other information from my FS which would help? If the FS could be salvaged that would be a bonus, but I''m more interested in providing a useful bug report before wiping the

NOTE: in order to apply this patch you should: git mv btrfsck.c cmd-fsck.c This patch moves btrfsck in to "btrfs fsck". It also adds support for symlinks to the btrfs binary to retain compablity, =) I think something should be done to the help description but i''m not sure what... Anyway, feedback is welcome. -- To unsubscribe from this list: send the line "unsubscribe

Hey, I''d start by saying that I know Btrfs is a still experimental, and so there''s no guarantee that one would be able to help me at all... But I thought I''ll try anyway :-) Few months ago I bought a new laptop and installed ArchLinux on it, with Btrfs on the root filesystem... I know, it''s not the smartest thing to do... After a few month I had issues with my

Is anyone interested in some part of this filesystem to figure out how it failed? Or can I erase and start again? Kind regards, -Evert Vorster- On Sun, Aug 8, 2010 at 8:18 AM, Evert Vorster <evorster@gmail.com> wrote: > Hi there. > > I have a btrfs on a raw device. (/dev/sda insted of in a partition, like > /dev/sda1 ) > The device in question is a USB hard drive with a 1TB

Hello. I am continuing my tests of BtrFS under a practical workload. Recently an incorrect poweroff (or maybe a small bug in BtrFS) caused a small data loss. The actual damage was non-existent. I used old branch, so maybe the relevant code is already improved. 1. Why btrfsck says "bad block" on that partition? What does it mean? My fist reaction was to use badblocks. It found no

Hi devs, I can''t mount my btrfs-based external disk. I don''t know what happened to the disk, but usually it gets disconnected (usb cable pulled out) buy my 8 months old daughter. Here''s the output from dmesg: [ 299.699543] parent transid verify failed on 528952573952 wanted 22726 found 22728 [ 299.700947] btrfs read error corrected: ino 1 off 528952573952 (dev

Hi there, I have a system on which btrfsck gives the following output... I don''t understand the meaning of the reported errors, so any clue would be appreciated. Is this something I should worry about, or not ? Would I be advised to try "--repair" ? (Last time I tried this one, it completely b0rked a filesystem, beyond repair, and my wife would kill me ifever I trash this one,

So I''m having a bit of trouble with one of my btrfs filesystems. It isn''t mounting after a power failure. I can''t get restore or btrfsck to run, even on backup supers. I''ve pasted some output below. My btrfs-progs below come from git this morning, running on linux 3.2.0. # mount /dev/md2 /media/test/ mount: wrong fs type, bad option, bad superblock on

A few months ago, my btrfs storage array became corrupted because of a power failure. A while ago, I made this thread to try and resolve the problem. (http://www.digipedia.pl/usenet/thread/11904/15955/) You can find detailed information about the problem in the previous thread, but I am happy to provide any other details. It didn''t really go anywhere in the way of solving my problem. The

Hi all, I have two multi-disk btrfs filesystems on a Arch linux 3.4.0 system. After a power failure, both filesystems refuse to mount [ 10.402284] Btrfs loaded [ 10.402714] device fsid 1e7c18a4-02d6-44b1-8eaf-c01378009cd3 devid 4 transid 65282 /dev/sdc [ 10.403108] btrfs: force zlib compression [ 10.403130] btrfs: enabling inode map caching [ 10.403152] btrfs: disk space caching is

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@gmail.com> --- man/Makefile | 27 +++++++++++++++++++++++++++ man/btrfsck.8.in | 17 +++++++++++++++++ 2 files changed, 44 insertions(+), 0 deletions(-) create mode 100644 man/Makefile create mode 100644 man/btrfsck.8.in diff --git a/man/Makefile b/man/Makefile new file mode 100644 index 0000000..2665dd1 --- /dev/null +++ b/man/Makefile

Hi all. I was doing some testing with writing out data to a BTFS filesystem with the compress-force option. With 1 program running, I saw btfs-delalloc taking about 1 CPU worth of time, much as could be expected. I then started up 2 programs at the same time, writing data to the BTRFS volume. btrfs-delalloc still only used 1 CPU worth of time. Is btrfs-delalloc threaded, to where it can use