I know better than to contact WD support directly about this, as they will wash their hands of the problem the moment I say “Linux”.
Nonetheless, that’s what I’m using. Linux Mint 19.3, Ubuntu based, on a 64-bit AMD Phenom X2 6-core based PC. The problem that I’m seeing is that when I’m doing large recursive copies with update to my three USB external backup drives (two are 8TB WD Elements, the other is a smaller 2TB WD drive, I forget the exact type) the copies will proceed until an apparently random point in the copy operation. Then the target file system will spontaneously become read-only, according to the message I get in the terminal window, and after a few more copy operations fail because they’re allegedly to a read-only file system, the drive itself will disappear, just as if I’d unmounted it. There are two ways to cure this problem, either actually dismount and remount the drive, which fixes it immediately, or else wait 20-30 minutes and it will (equally spontaneously) ‘reappear’ and will be back in read/write mode.
Does anybody have any clue how to fix this problem, because it is a real nuisance. I set my backups going while I’m asleep, only to wake up and find they’ve failed with this error. It’s taking me three or four attempted copies (and yes, I do the copies via a script and a sudo) to do a backup - and of course, a subsequent copy attempt just sails past the place where the previous one failed without a hint of trouble. It’s almost like there’s a limit on the number of bytes that can be transferred or the amount of time the drive can be active before the problem occurs.
Any assistance VERY gratefully received!