linux-ext4 - e2fsck fails on non journalled partition

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Date:   Fri, 15 Mar 2019 20:28:27 +0100
From:   Ede Wolf <listac@...elschwaden.de>
To:     linux-ext4@...r.kernel.org
Subject: e2fsck fails on non journalled partition

I have to check an ext4 partition, that has been created without a 
journal. But, as it seems, e2fsck is refusing to check this drive, 
failing with a "no external journal has been found" error, code 12. That 
of course is correct, no journal does imply no external journal.

I am wondering, ^has_journal is well documented in both the mkfs.ext4 
manpage as well as tune2fs. So by omitting the journal nothing obscure, 
hacky or obviously unsupported has been done.

Why is e2fsck refusing to check the partition? Or what else may I have 
be doing wrong?


~ # e2fsck -fv /dev/sde1
e2fsck 1.44.5 (15-Dec-2018)
Can't find external journal

USERDATA: ********** WARNING: Filesystem still has errors **********

~ # echo $?
12
~ #

Filesystem has been created similar to this:

mkfs -m 0 -O 
"^has_journal,dir_index,^metadata_csum,64bit,^ext_attr,^huge_file,large_dir,^metadata_csum_seed,^quota,extent" 
-b 4096 -i 32768 -L USERDATA



~ # tune2fs -l /dev/sde1
tune2fs 1.44.5 (15-Dec-2018)
Filesystem volume name:   USERDATA
Last mounted on:          /mnt/userdata
Filesystem UUID:          241d6272-a004-44ef-9998-7fbc3ef98672
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      ext_attr resize_inode dir_index filetype 
extent 64bit large_dir sparse_super large_file
Filesystem flags:         signed_directory_hash
Default mount options:    user_xattr acl
Filesystem state:         not clean with errors
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              4669440
Block count:              9338880
Reserved block count:     0
Overhead blocks:          1536
Free blocks:              5602781
Free inodes:              4247845
First block:              0
Block size:               4096
Fragment size:            4096
Group descriptor size:    64
Reserved GDT blocks:      1024
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         16384
Inode blocks per group:   1024
Filesystem created:       Wed Jan 30 18:42:35 2019
Last mount time:          Fri Mar 15 20:16:26 2019
Last write time:          Fri Mar 15 20:16:26 2019
Mount count:              90
Maximum mount count:      -1
Last checked:             Thu Jan 31 18:49:12 2019
Check interval:           0 (<none>)
Lifetime writes:          204 GB
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:	          256
Required extra isize:     32
Desired extra isize:      32
Journal UUID:             00000000-1b00-0000-0000-000000000000
Journal inode:            131072
Default directory hash:   half_md4
Directory Hash Seed:      2416ec00-bef9-437a-a3b1-f626303d72a2
FS Error count:           41
First error time:         Sun Mar  3 13:15:39 2019
First error function:     ext4_readdir
First error line #:       182
First error inode #:      3673403
First error block #:      0
Last error time:          Mon Mar 11 18:22:09 2019
Last error function:      ext4_empty_dir
Last error line #:        2712
Last error inode #:       639817
Last error block #:       1