resize2fs: New size too large to be expressed in 32 bits

user_8315545 0
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I had a 12TB ext4 partition which I wanted to extend to 18TB. I've added the new disks to the RAID and after doing that I wanted to re-size the partition to occupy this new space. I started the growth of the partition but the procedure failed because the ext4 cannot handle partitions bigger than 16TB.

The problem is that now when I open gparted, gparted shows that the size of the partition is 18TB but I can see only 12TB in Nautilus window.

How can I roll back the effects of the gparted operation so the two sizes are consistent with each other?

# resize2fs /dev/sda1

resize2fs 1.42.5 (29-Jul-2012)
resize2fs: New size too large to be expressed in 32 bits
ubuntu resize linux
2 Answers

What you apparently really want is not to roll back your changes, but to be able to resize your file system to a size greater than the 16TB limit.

For that, you need a version of e2fsprogs >= 1.43 and then activate 64bit support with the -b switch of resize2fs. If yo have an older Ubuntu with e2fsprogs 1.42 or older, you can find backports of e2fsprogs in the Launchpad PPAs or compile it from source.

Once you have a recent enough version of e2fsprogs:

umount       /dev/$YOUR_DISK
e2fsck -f    /dev/$YOUR_DISK
resize2fs -b /dev/$YOUR_DISK
e2fsck -f    /dev/$YOUR_DISK
mount ...

See this answer for more details.

user_1110360

Please don't forget to expand the filesystem with the -p option, after the system has been converted to 64-bit, as explained in the link cited by Mivk.

umount       /dev/$YOUR_DISK
e2fsck -f    /dev/$YOUR_DISK
resize2fs -b /dev/$YOUR_DISK    # Enable 64bit support in the filesystem
resize2fs -p /dev/$YOUR_DISK    # Resize the filesystem
e2fsck -f    /dev/$YOUR_DISK
mount ...
user_59181270
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