“resize2fs: Permission denied to resize filesystem” | ARKIT

Observed error message while doing online resize “resize2fs: Permission denied to resize filesystem”. Unable to extend the file system size.

# resize2fs /dev/xvdh
resize2fs 1.42.9 (28-Dec-2013)
Filesystem at /dev/xvdh is mounted on /data3; on-line resizing required
old_desc_blocks = 256, new_desc_blocks = 319
resize2fs: Permission denied to resize filesystem

Error messages in /var/log/messages and dmesg output as below

EXT4-fs (xvdh): error count since last fsck: 1
EXT4-fs (xvdh): initial error at time 1587778646: ext4_free_blocks:4885
EXT4-fs (xvdh): last error at time 1587778646: ext4_free_blocks:4885

[43567001.312562] EXT4-fs warning (device xvdh): ext4_resize_begin:44: There are errors in the filesystem, so online resizing is not allowed

resize2fs: Permission denied to resize filesystem – Solution

Since file system has internal block level errors you need to un-mount the file system then run the file system check and correct block level errors.

# unmount -l /data3
# e2fsck -y /dev/xvdh

above command will take longer time based on the FS size.

Resize the file system before mounting it back

# resize2fs /dev/xvdh

After successful resize, mount it back

# mount /dev/xvdh /data3

That’s about the error and solution. if you need more details on e2fsck check man page.

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Command output

# umount /data3
# e2fsck /dev/xvdh
e2fsck 1.42.9 (28-Dec-2013)
/dev/xvdh contains a file system with errors, check forced.
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
Block bitmap differences: -(440462435--440463535)
Fix<y>? yes

Free blocks count wrong for group #13441 (2069, counted=3170).
Fix<y>? yes
Free blocks count wrong (42040857, counted=42041958).
Fix<y>? yes

/dev/xvdh: ***** FILE SYSTEM WAS MODIFIED *****
/dev/xvdh: 244102/134217728 files (25.9% non-contiguous), 494828954/536870912 blocks
# resize2fs /dev/xvdh
resize2fs 1.42.9 (28-Dec-2013)
Resizing the filesystem on /dev/xvdh to 667942912 (4k) blocks.
The filesystem on /dev/xvdh is now 667942912 blocks long.

# mount -av
/data3 : successfully mounted

# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/xvdh 2.5T 1.9T 526G 78% /data3