[Bug 1931790] Re: Unable to mount btrfs RAID 1 filesystem after reboot

Sun Jun 13 12:40:55 UTC 2021

I think the key is :
[ 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

Additional info:
# lsblk -e7
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 238.5G  0 disk 
├─sda1   8:1    0  19.5G  0 part 
├─sda2   8:2    0   620M  0 part 
├─sda3   8:3    0  48.8G  0 part /
└─sda4   8:4    0     8G  0 part [SWAP]
sdb      8:16   0 232.9G  0 disk 
├─sdb1   8:17   0   200M  0 part 
└─sdb2   8:18   0  37.3G  0 part 
sdc      8:32   0 465.8G  0 disk 
├─sdc1   8:33   0   200M  0 part 
├─sdc2   8:34   0  97.7G  0 part 
├─sdc3   8:35   0 326.9G  0 part 
└─sdc4   8:36   0  41.1G  0 part 
sdd      8:48   0 931.5G  0 disk 
└─sdd1   8:49   0 931.5G  0 part 
sde      8:64   0 931.5G  0 disk 
└─sde1   8:65   0 931.5G  0 part 

# blockdev --getsize64  /dev/sdd1
1000201841152
# blockdev --getsize64  /dev/sde1
1000201841152

#btrfs fi show
Label: 'DataNew'  uuid: ae9d1623-f910-4dec-a88f-f762dbdba35e
        Total devices 2 FS bytes used 889.78GiB
        devid    1 size 931.51GiB used 892.06GiB path /dev/sdd1
        devid    2 size 931.51GiB used 892.06GiB path /dev/sde1

# btrfs check /dev/sdd1
Opening filesystem to check...
Checking filesystem on /dev/sdd1
UUID: ae9d1623-f910-4dec-a88f-f762dbdba35e
[1/7] checking root items
[2/7] checking extents
[3/7] checking free space cache
[4/7] checking fs roots
[5/7] checking only csums items (without verifying data)
[6/7] checking root refs
[7/7] checking quota groups skipped (not enabled on this FS)
found 955392856064 bytes used, no error found
total csum bytes: 931797364
total tree bytes: 1232355328
total fs tree bytes: 226492416
total extent tree bytes: 30195712
btree space waste bytes: 79534096
file data blocks allocated: 954160500736
 referenced 954160500736

# btrfs check /dev/sde1
Opening filesystem to check...
Checking filesystem on /dev/sde1
UUID: ae9d1623-f910-4dec-a88f-f762dbdba35e
[1/7] checking root items
[2/7] checking extents
[3/7] checking free space cache
[4/7] checking fs roots
[5/7] checking only csums items (without verifying data)
[6/7] checking root refs
[7/7] checking quota groups skipped (not enabled on this FS)
found 955392856064 bytes used, no error found
total csum bytes: 931797364
total tree bytes: 1232355328
total fs tree bytes: 226492416
total extent tree bytes: 30195712
btree space waste bytes: 79534096
file data blocks allocated: 954160500736
 referenced 954160500736

Right now unable to mount any of the devices.. in ro, recovery etc

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https://bugs.launchpad.net/bugs/1931790

Title:
  Unable to mount btrfs RAID 1 filesystem after reboot

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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