I'm trying to resize an Ext4 Google Cloud persistent disk from 14TB to 15 TB. I have an instance running Centos6. I increased the size of the disk in the cloud console. Now when I unmount the disk and try to run resize2fs it fails with this this error:
sudo resize2fs /dev/sdb
resize2fs 1.41.12 (17-May-2010)
resize2fs: Filesystem has unsupported feature(s) while trying to open
/dev/sdb
Couldn't find valid filesystem superblock.
Any ideas or advice would be appreciated. Thanks.