On Friday 02 Dec 2011 16:31:47 Rogutės Sparnuotos wrote:
There can't be any corruption after a successful unmount. 1. Run sudo umount /path/to/mounted/dir; echo returncode=$? 2. If you see 'returncode=0' on the last line, continue with 3. 3. Remove your USB drive. 4. Attach your USB drive. 5. If you see data corruption, it's one of: * faulty/misbehaving USB dongle (test with another USB device); * bad filesystem on your USB device (test with a freshly created one); * a bug in Linux kernel (report upstream).
Yeah, umount seems to work correctly. I misinterpreted the fact that KDE reports an immediate unmount, but the device is not actually unmounted yet. That's probably a KDE fail. It's still odd that it used to work OK, though.
The 'flush' and 'sync' mount options are not needed under normal circumstances (as in don't use if you don't know what you are doing).
Well, without sync, I get incorrect progress bars when copying large files, and "cp" returns near-instantly. This happens even with flush. That doesn't seem right to me. Is that what you normally see? Maybe my expectations are wrong. Paul