gparted refuses to resize a partition, reporting the error:
dumpe2fs 1.42.12 (29-Aug-2014)
dumpe2fs: Invalid argument while reading journal super block
Unable to read the contents of this file system!
Because of this some operations may be unavailable.
The cause might be a missing software package.
The following list of software packages is required for ext4 file system support: e2fsprogs v1.41+.
The e2fsprogs package is installed (version 1.42.12-2).
This is the complete error message:
File system: ext4
Size: 6.52 GiB
Status: Not mounted
Partition
Path: /dev/sda7
Flag: bios_grub
Filesystem volume name:
Last mounted on: /
Filesystem UUID: 3821d550-ceaa-4388-8be1-2da5678e0831
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent 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
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 9371648
Block count: 37468416
Reserved block count: 1873420
Free blocks: 35413208
Free inodes: 9106611
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 1015
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 8192
Inode blocks per group: 512
Flex block group size: 16
Filesystem created: Thu Jan 5 01:03:01 2017
Last mount time: Thu Jan 5 03:04:52 2017
Last write time: Thu Jan 5 03:04:52 2017
Mount count: 4
Maximum mount count: -1
Last checked: Thu Jan 5 01:03:01 2017
Check interval: 0 ()
Lifetime writes: 13 GB
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: 3d766a26-9f5c-442c-9c8e-8e6ff0f5df75
Journal backup: inode blocks
dumpe2fs 1.42.12 (29-Aug-2014)
dumpe2fs: Invalid argument while reading journal super block
Unable to read the contents of this file system!
Because of this some operations may be unavailable.
The cause might be a missing software package.
The following list of software packages is required for ext4 file system support: e2fsprogs v1.41+.
Answer
You have a broken super-block :Unable to read the contents of this file system!
Check your filesystem:
sudo fsck.ext4 -v /dev/sdaX
If your filesystem is corrupted , you should have an output like this :The superblock could not be read....
Run mke2fs command to find out the superblock backups:
sudo mke2fs -n /dev/sdaX
Restore the missing superblock through the e2fsck command:
You should use the first superblock obtained from mke2fs
sudo e2fsck -b put_the_first_block_number_here /dev/sdaX
Reboot your system then run gparted
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