Raspberry Pi Forums

Hi, forum and raspberry noob here, but quite comfortable in linux systems generally
Searched but couldnt see similar issues anywhere (forum and google) and never seen it before. apologies if i missed something:

Apparently randomly between mounting usb filesystems (ext3 and xfs both) a couple of media directories become files the size of a single file in the directory contents (i.e TV episodes at 180odd meg)

Its occurred on 2 different usb HDDs in 2 different caddies - both cheap though.

It looks like inode corruption but i dont understand why it is happening in such a strange manner.
Has anyone seen it and can anyone help?
FS repair utilities can recover the folder into lost and found but its a regular occurrence and a massive pain in the ass..

This seems ... scary, but I think without details of exact reproduction steps on a fresh install, there is a high probability of user error.

Yes this happened on my usb hdd when it was formatted as fat32 or ext2 or ext3.
Since I have upgraded to the latest version of Raspian and reformatted the drive
as ext4 it has not happened. My drive is connected through a usb hub which has a
2.5 amp power supply.