New answers tagged resize2fs
3
You must tell apart the resizing of a block device (here: /dev/sdb4) from the resizing of a file system. A file system can be smaller but not bigger than the underlying block device.
You should make a backup of the partition table:
sfdisk -d /dev/sdb > ~/sfdisk_sdb.txt
Then you make a copy of that file and adapt the line that looks similar to this:
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