[Bug 1931790] Re: Unable to mount btrfs RAID 1 filesystem after reboot - Error - device total_bytes should be at most X but found Y

Wed Aug 18 10:54:54 UTC 2021

Great article. Will be useful for more people who are going to run into
this issue.

On Wed, Aug 18, 2021 at 4:15 PM Łukasz <1931790 at bugs.launchpad.net>
wrote:

> I managed to fix my problem recreating file system on disks.
>
> I wrote blog post about it:
> https://zarnowiecki.pl/posts/btrfs-raid1-does-not-mount/
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1931790
>
> Title:
>   Unable to mount btrfs RAID 1 filesystem after reboot - Error - device
>   total_bytes should be at most X but found Y
>
> Status in Ubuntu:
>   New
> Status in btrfs package in Ubuntu:
>   New
> Status in btrfs-progs package in Ubuntu:
>   New
>
> Bug description:
>   Hi,
>
>   I'm unable to mount my newly created btrfs RAID 1 filesystem after
>   reboot..I performed the below steps with my 2 X 1 TB drives:
>
>   * created a new btrfs filesystem
>   mkfs.btrfs /dev/sdd1
>
>   * mounted it to /mnt/datanew
>   mount -t btrfs /dev/sdd1 /mnt/datanew
>
>   * copied over data from my previous NTFS volume on /dev/sde1 (which I
>   intended to add later as a mirror) - took 3.5 hrs
>
>   * added a new volume
>   mkfs.btrfs device add /dev/sde1
>
>   * started balance and convert to raid 1 - took 8 to 10
>   hours..overnight
>
>   btrfs balance start -dconvert=raid1 -mconvert=raid1 /mnt/datanew
>
>   * rebooted next morning
>
>   I seeing below errors:
>   [  792.045980] BTRFS info (device sdd1): allowing degraded mounts
>   [  792.045988] BTRFS info (device sdd1): disk space caching is enabled
>   [  792.045990] BTRFS info (device sdd1): has skinny extents
>   [  792.047498] BTRFS error (device sdd1): device total_bytes should be
> at most 1000201841152 but found 1000203804672
>   [  792.049207] BTRFS error (device sdd1): failed to read chunk tree: -22
>   [  792.051525] BTRFS error (device sdd1): open_ctree failed
>   * Manual mount has below error additonally
>   mount: /mnt/datanew: wrong fs type, bad option, bad superblock on
> /dev/sde1, missing codepage or helper program, or other error.
>
>   * Verified the data seems intact (apparently no errors), superblock
>   seems fine.. tried btrfs rescue commands.. no issues found to fix
>
>   * Found several hits on search but not many solutions..except "btrfs
> filesystem resize max /" which doesnt work as I'm unable to mount in the
> first place..
>   btrfs filesystem resize max /mnt/datanew/
>   ERROR: not a btrfs filesystem: /mnt/datanew/
>
>   Any suggestions? Thanks
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 21.04
>   Package: ubuntu-release-upgrader-core 1:21.04.13
>   ProcVersionSignature: Ubuntu 5.11.0-17.18-generic 5.11.12
>   Uname: Linux 5.11.0-17-generic x86_64
>   ApportVersion: 2.20.11-0ubuntu65.1
>   Architecture: amd64
>   CasperMD5CheckResult: pass
>   CrashDB: ubuntu
>   Date: Sun Jun 13 11:17:02 2021
>   InstallationDate: Installed on 2021-05-16 (27 days ago)
>   InstallationMedia: Kubuntu 21.04 "Hirsute Hippo" - Release amd64
> (20210420)
>   PackageArchitecture: all
>   ProcEnviron:
>    LANGUAGE=en_IN:en
>    TERM=xterm-256color
>    PATH=(custom, no user)
>    LANG=en_IN
>    SHELL=/bin/bash
>   SourcePackage: ubuntu-release-upgrader
>   Symptom: ubuntu-release-upgrader
>   UpgradeStatus: No upgrade log present (probably fresh install)
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+bug/1931790/+subscriptions
>
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https://bugs.launchpad.net/bugs/1931790

Title:
  Unable to mount btrfs RAID 1 filesystem after reboot - Error - device
  total_bytes should be at most X but found Y

Status in Ubuntu:
  New
Status in btrfs package in Ubuntu:
  New
Status in btrfs-progs package in Ubuntu:
  New

Bug description:
  Hi,

  I'm unable to mount my newly created btrfs RAID 1 filesystem after
  reboot..I performed the below steps with my 2 X 1 TB drives:

  * created a new btrfs filesystem
  mkfs.btrfs /dev/sdd1

  * mounted it to /mnt/datanew
  mount -t btrfs /dev/sdd1 /mnt/datanew

  * copied over data from my previous NTFS volume on /dev/sde1 (which I
  intended to add later as a mirror) - took 3.5 hrs

  * added a new volume
  mkfs.btrfs device add /dev/sde1

  * started balance and convert to raid 1 - took 8 to 10
  hours..overnight

  btrfs balance start -dconvert=raid1 -mconvert=raid1 /mnt/datanew

  * rebooted next morning

  I seeing below errors:
  [  792.045980] BTRFS info (device sdd1): allowing degraded mounts
  [  792.045988] BTRFS info (device sdd1): disk space caching is enabled
  [  792.045990] BTRFS info (device sdd1): has skinny extents
  [  792.047498] BTRFS error (device sdd1): device total_bytes should be at most 1000201841152 but found 1000203804672
  [  792.049207] BTRFS error (device sdd1): failed to read chunk tree: -22
  [  792.051525] BTRFS error (device sdd1): open_ctree failed
  * Manual mount has below error additonally
  mount: /mnt/datanew: wrong fs type, bad option, bad superblock on /dev/sde1, missing codepage or helper program, or other error.

  * Verified the data seems intact (apparently no errors), superblock
  seems fine.. tried btrfs rescue commands.. no issues found to fix

  * Found several hits on search but not many solutions..except "btrfs filesystem resize max /" which doesnt work as I'm unable to mount in the first place..
  btrfs filesystem resize max /mnt/datanew/
  ERROR: not a btrfs filesystem: /mnt/datanew/

  Any suggestions? Thanks

  ProblemType: Bug
  DistroRelease: Ubuntu 21.04
  Package: ubuntu-release-upgrader-core 1:21.04.13
  ProcVersionSignature: Ubuntu 5.11.0-17.18-generic 5.11.12
  Uname: Linux 5.11.0-17-generic x86_64
  ApportVersion: 2.20.11-0ubuntu65.1
  Architecture: amd64
  CasperMD5CheckResult: pass
  CrashDB: ubuntu
  Date: Sun Jun 13 11:17:02 2021
  InstallationDate: Installed on 2021-05-16 (27 days ago)
  InstallationMedia: Kubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_IN:en
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_IN
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: No upgrade log present (probably fresh install)

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