Renaming a FAT filesystem: mlabel -i <device> ::<label> Renaming an ext filesystem: e2label <device> <label> You can detect whether it's one or the

Renaming a FAT filesystem: mlabel -i <device> ::<label> Renaming an ext filesystem: e2label <device> <label> You can detect whether it's one or the other in the mount table. It amounts to maybe a dozen lines of bash code at maximum - maybe a few more if it's C++, depending on what abstractions already exist. I can't actually see where in the bug report it describes an issue that's specific to extfs?