Date:   Fri, 15 Mar 2019 13:19:12 -0600
From:   Andreas Dilger <adilger@...ger.ca>
To:     Burke Harper <go88team@...il.com>
Cc:     linux-ext4@...r.kernel.org
Subject: Re: Should Never Happen: Resize Inode Corrupt

Kill your e2fsck and upgrade to the latest version 1.44.5, as it has a lot of fixes over 1.42.13. 

If you have the ability, make a "dd" copy of the filesystem first, or a snapshot, and run e2fsck on that first. 

Cheers, Andreas

> On Mar 15, 2019, at 00:38, Burke Harper <go88team@...il.com> wrote:
> 
> Over the past weekend, I added 2 more drives to my /dev/md0 array:
> 
> sudo mdadm --detail /dev/md0
> /dev/md0:
>        Version : 1.2
>  Creation Time : Sat Dec 16 18:32:08 2017
>     Raid Level : raid6
>     Array Size : 54697266176 (52163.38 GiB 56010.00 GB)
>  Used Dev Size : 7813895168 (7451.91 GiB 8001.43 GB)
>   Raid Devices : 9
>  Total Devices : 9
>    Persistence : Superblock is persistent
> 
>  Intent Bitmap : Internal
> 
>    Update Time : Mon Mar 11 05:13:12 2019
>          State : clean
> Active Devices : 9
> Working Devices : 9
> Failed Devices : 0
>  Spare Devices : 0
> 
>         Layout : left-symmetric
>     Chunk Size : 512K
> 
>           Name : powerhouse:0  (local to host powerhouse)
>           UUID : 19b5c7a5:59e4bd00:b4b1c18c:089df9bd
>         Events : 45981
> 
>    Number   Major   Minor   RaidDevice State
>       0       8        0        0      active sync   /dev/sda
>       1       8       16        1      active sync   /dev/sdb
>       2       8       32        2      active sync   /dev/sdc
>       3       8       48        3      active sync   /dev/sdd
>       5       8      144        4      active sync   /dev/sdj
>       4       8      128        5      active sync   /dev/sdi
>       6       8      112        6      active sync   /dev/sdh
>       8       8       80        7      active sync   /dev/sdf
>       7       8       64        8      active sync   /dev/sde
> 
> Afterwards I did an fsck:
> 
> sudo fsck.ext4 -f /dev/md0
> e2fsck 1.42.13 (17-May-2015)
> Pass 1: Checking inodes, blocks, and sizes
> Pass 2: Checking directory structure
> Pass 3: Checking directory connectivity
> Pass 4: Checking reference counts
> Pass 5: Checking group summary information
> /dev/md0: 70089/1220923392 files (3.6% non-contiguous),
> 7726498938/9767368960 blocks
> 
> Following that, I tried to perform an offline resize:
> 
> sudo resize2fs /dev/md0
> resize2fs 1.42.13 (17-May-2015)
> Resizing the filesystem on /dev/md0 to 13674316544 (4k) blocks.
> Should never happen: resize inode corrupt!
> 
> After having done that, it looks like it should have been an online
> resize from reading a thread on here from 2015.
> 
> After trying the resize I tried to do another fsck:
> 
> sudo fsck.ext4 -f /dev/md0
> e2fsck 1.42.13 (17-May-2015)
> ext2fs_check_desc: Corrupt group descriptor: bad block for inode table
> fsck.ext4: Group descriptors look bad... trying backup blocks...
> Superblock has an invalid journal (inode 8).
> Clear<y>? yes
> *** ext3 journal has been deleted - filesystem is now ext2 only ***
> 
> Resize inode not valid.  Recreate<y>? yes
> 
> It's been stuck here for days, with:
> 
> 14827 root      20   0  141796 121044   2688 R  93.8  0.4   5546:26 fsck.ext4
> 
> It's been running at around 100% the whole time.  I don't see any disk
> io happening either.
> 
> sudo dumpe2fs -h /dev/md0
> dumpe2fs 1.42.13 (17-May-2015)
> Filesystem volume name:   <none>
> Last mounted on:          /Media10
> Filesystem UUID:          d36119d5-e3ec-47f7-b93e-124eb4598367
> Filesystem magic number:  0xEF53
> Filesystem revision #:    1 (dynamic)
> Filesystem features:      has_journal ext_attr resize_inode dir_index
> filetype extent 64bit flex_bg sparse_super large_file huge_file
> uninit_bg dir_nlink extra_isize
> Filesystem flags:         signed_directory_hash
> Default mount options:    user_xattr acl
> Filesystem state:         clean with errors
> Errors behavior:          Continue
> Filesystem OS type:       Linux
> Inode count:              1709293568
> Block count:              13674316544
> Reserved block count:     683715825
> Free blocks:              5886063280
> Free inodes:              1709223479
> First block:              0
> Block size:               4096
> Fragment size:            4096
> Group descriptor size:    64
> Blocks per group:         32768
> Fragments per group:      32768
> Inodes per group:         4096
> Inode blocks per group:   256
> RAID stride:              128
> RAID stripe width:        256
> Flex block group size:    16
> Filesystem created:       Sun Dec 17 10:10:08 2017
> Last mount time:          Sat Mar  9 17:58:06 2019
> Last write time:          Mon Mar 11 05:48:14 2019
> Mount count:              0
> Maximum mount count:      -1
> Last checked:             Mon Mar 11 05:16:14 2019
> Check interval:           0 (<none>)
> Lifetime writes:          29 TB
> Reserved blocks uid:      0 (user root)
> Reserved blocks gid:      0 (group root)
> First inode:              11
> Inode size:               256
> Required extra isize:     28
> Desired extra isize:      28
> Journal inode:            8
> Default directory hash:   half_md4
> Directory Hash Seed:      23fd4260-aee9-4f36-8406-240f3b7a39d2
> Journal backup:           inode blocks
> Journal superblock magic number invalid!
> 
> 
> Should I let the fsck continue, or is it safe to exit to try something else.
> 
> I recently did an offline resize a few weeks ago on the same array and
> it worked out just fine.  I'm not sure what happened this time, I
> followed the same steps.
> 
> Thanks for any help.

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