bug: raid10 filesystem has suddenly ceased to mount

bug: raid10 filesystem has suddenly ceased to mount

[Иван Смирнов]

Hi!
The problem is that the BTRFS raid10 filesystem without any
understandable cause refuses to mount.
Here is dmesg output:
[77847.845540] device label linux-btrfs-raid10 devid 3 transid 45639 /dev/sdc1
[77848.633912] btrfs: allowing degraded mounts
[77848.633917] btrfs: enabling auto defrag
[77848.633919] btrfs: use lzo compression
[77848.633922] btrfs: turning on flush-on-commit
[77848.658879] parent transid verify failed on 2363592273920 wanted
31596 found 25250
[77848.659060] parent transid verify failed on 2363592273920 wanted
31596 found 25250
[77848.659274] parent transid verify failed on 2363592273920 wanted
31596 found 25250
[77848.659455] parent transid verify failed on 2363592273920 wanted
31596 found 25250
[77848.659459] parent transid verify failed on 2363592273920 wanted
31596 found 25250
[77848.659464] btrfs: failed to read chunk tree on sdc1
[77848.661376] btrfs: open_ctree failed

Linux kernel: 3.3.0-3-grml-amd64
Distribution: Debian (mix of stable and testing branches with grml kernel).
S.M.A.R.T. of all drives is good.

Re: bug: raid10 filesystem has suddenly ceased to mount

[cwillu]

Try -o recovery under a 3.4 or later kernel

On Sat, Jul 14, 2012 at 12:48 AM, Иван Смирнов
<feliz.cha.cha.cha@gmail.com> wrote:
> Hi!
> The problem is that the BTRFS raid10 filesystem without any
> understandable cause refuses to mount.
> Here is dmesg output:
> [77847.845540] device label linux-btrfs-raid10 devid 3 transid 45639 /dev/sdc1
> [77848.633912] btrfs: allowing degraded mounts
> [77848.633917] btrfs: enabling auto defrag
> [77848.633919] btrfs: use lzo compression
> [77848.633922] btrfs: turning on flush-on-commit
> [77848.658879] parent transid verify failed on 2363592273920 wanted
> 31596 found 25250
> [77848.659060] parent transid verify failed on 2363592273920 wanted
> 31596 found 25250
> [77848.659274] parent transid verify failed on 2363592273920 wanted
> 31596 found 25250
> [77848.659455] parent transid verify failed on 2363592273920 wanted
> 31596 found 25250
> [77848.659459] parent transid verify failed on 2363592273920 wanted
> 31596 found 25250
> [77848.659464] btrfs: failed to read chunk tree on sdc1
> [77848.661376] btrfs: open_ctree failed
>
> Linux kernel: 3.3.0-3-grml-amd64
> Distribution: Debian (mix of stable and testing branches with grml kernel).
> S.M.A.R.T. of all drives is good.
> --
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Re: bug: raid10 filesystem has suddenly ceased to mount

[Helmut Hullen]

Hallo, ????,

Du meintest am 14.07.12:

> The problem is that the BTRFS raid10 filesystem without any
> understandable cause refuses to mount.

> Here is dmesg output:
> [77847.845540] device label linux-btrfs-raid10 devid 3 transid 45639
> /dev/sdc1 [77848.633912] btrfs: allowing degraded mounts
> [77848.633917] btrfs: enabling auto defrag
> [77848.633919] btrfs: use lzo compression
> [77848.633922] btrfs: turning on flush-on-commit
> [77848.658879] parent transid verify failed on 2363592273920 wanted
> 31596 found 25250
> [77848.659060] parent transid verify failed on 2363592273920 wanted
> 31596 found 25250

[...]

Sounds familiar ...

Re-install your backup.

Viele Gruesse!
Helmut