similar to: Unmountable filesystem parent transid verify failed

This patch adds mixed back ref support for btrfs programs. The mixed back ref is a new disk format. back compatilibity is still not implemented. To try the new disk format, you need fresh formatted btrfs. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> --- diff -urp btrfs-progs-unstable/crc32c.h btrfs-progs-2/crc32c.h --- btrfs-progs-unstable/crc32c.h 2008-09-30 16:50:58.898877720 +0800

After running one too many times into “parent transid verify failed” that prevents a filesystem from being mounted, I found out how to adjust some system blocks so that the kernel could get past that check and mount the filesystem. In one case, I could get all the data I wanted from the filesystem; in another, many checksums failed and I ended up throwing it all away, so no guarrantees.

After an unclean shutdown, my btrfs is now unmountable: device label root devid 1 transid 375202 /dev/sdc4 parent transid verify failed on 53984886784 wanted 375202 found 375201 parent transid verify failed on 53984886784 wanted 375202 found 375201 parent transid verify failed on 53984886784 wanted 375202 found 375201 btrfs: open_ctree failed btrfsck aborts: couldn''t open because of

My raid5 crashed, so i changed the old hdd and started the rebuild. But now i can''t mount the btrfs, the mount command frozen and the kernel give me in a loop the follwing lines: Jul 29 18:37:04 fileserver kernel: [ 1229.692268] verify_parent_transid: 2492 callbacks suppressed Jul 29 18:37:04 fileserver kernel: [ 1229.692274] parent transid verify failed on 6975016271872 wanted 204247

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

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

When making btrfs filesystem. we firstly write root leaf to specified filed, and then we recow the root. If we don''t recow, some trees are not in the correct block group. Steps to reproduce: dd if=/dev/zero of=test.img bs=1M count=100 mkfs.btrfs -f test.img btrfs-debug-tree test.img extent tree key (EXTENT_TREE ROOT_ITEM 0) leaf 4210688 items 10 free space 3349 generation 4 owner 2

Hello Developers, it seems that i discovered a bug in btrfs while testing it on a zSeries mainframe :-) ## Test environment: - IBM System z900 Mainframe - Debian SID with 64 Bit Kernel - GIT Sources from git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable.git - System runs as z/VM guest - 3 Virtual CPUs - 1 GB RAM Storage ## Initial Test Setup - Setup a Debian SID System with

This fixes bugzilla 57491. If we take a snapshot of a fs with a unlink ongoing and then try to send that root we will run into problems. When comparing with a parent root we will search the parents and the send roots commit_root, which if we''ve just created the snapshot will include the file that needs to be evicted by the orphan cleanup. So when we find a changed extent we will try

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

This patch introduce extent buffer cache for every i-node. By this way, we can save the search time and reduce the lock contention of the root because we needn''t search the item from the root of b+ tree. Implementation: - add two pointers of extent buffer into btrfs_inode struct, one for nodes/leaves of fs/file tree, the other for nodes/leaves of the log tree. - add a variant to tell

I''ve been working to try to improve the write-ahead log''s performance, and I found that the bottleneck addresses in the checksum items, especially when we want to make a random write on a large file, e.g a 4G file. Then a idea for this suggested by Chris is to use sub transaction ids and just to log the part of inode that had changed since either the last log commit or the last

Hello, This patch adds shared reference cache support. The new space balancing code plays with multiple subvols at the same time, So the old per-subvol reference cache isn''t fit for it. Regards Yan Zheng --- diff -r 47aa0c51998a ctree.h --- a/ctree.h Thu Sep 25 16:00:36 2008 +0800 +++ b/ctree.h Thu Sep 25 16:02:11 2008 +0800 @@ -80,6 +80,10 @@ /* does write ahead logging to speed up

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

I have a corrupted multi-device file system that got corrupted ages ago (as I recall, one of the drives stopped responding, causing btrfs to panic). I am hoping to recover some of the data. For what it''s worth, here is the dmesg output from trying to mount the file system on a 3.0 kernel: device label Media devid 6 transid 816153 /dev/sdq device label Media devid 7 transid 816153

Hello, I have a 5.5TB Btrfs filesystem on top of a md-raid 5 device. Now if i run some file operations like find, i get these messages. kernel is 2.6.38.5-1 on arch linux May 5 14:15:12 mail kernel: [13559.089713] parent transid verify failed on 3062073683968 wanted 5181 found 5188 May 5 14:15:12 mail kernel: [13559.089834] parent transid verify failed on 3062073683968 wanted 5181 found 5188

Hi, I''m running OpenSuse 12.2 with kernel 3.5.3 HBA= LSI 1068e using the MPTSAS driver (patched) (https://patchwork.kernel.org/patch/1379181/) SANOS1:/media # uname -a Linux SANOS1 3.5.3 #3 SMP Sun Sep 2 18:44:37 CEST 2012 x86_64 x86_64 x86_64 GNU/Linux I''ve tried to simulate a disk replacement but it seems that now /dev/sdg is stuck in the btrfs pool (RAID10) SANOS1:/media #

Now we set @refs to 2 on creating a new extent buffer, meanwhile we allocate the needed free space, but we don''t give enough free_extent_buffer() to reduce the eb''s references to zero so that the eb can finally be freed, so the problem is we has decrease the referene count of backrefs to zero, which ends up releasing the space occupied by the eb, and this space can be allocated

Document those places in the btrfs code which are BUGing on non-fatal error conditions that should be handled by proper error paths. This makes it easier to distinguish between what needs fixing versus which BUG_ON''s we might want to keep (to trap code bugs, unexpected inconsistencies, etc). Do this with a trivial macro, ''btrfs_fixable_bug_on'' which just defines to

I tried to unmount a btrfs filesystem located in a external usb hard drive. This belonged to a raid1 data and metadata filesystem mounted in degraded mode. Unfortunately, I couldn''t save the image of filesystem but I could see this error in kern.log: Aug 4 02:23:55 rohan kernel: [ 3747.840027] usb 1-3: new high-speed USB device number 8 using ehci_hcd Aug 4 02:23:55 rohan kernel: [