SU+J Lost files after a power failure

[CeDeROM]

On Tue, Oct 15, 2013 at 1:47 PM, Daniel Feenberg <feenberg at nber.org> wrote:
> We have a disk-to-disk backup that runs continuously. I have found that if I
> unmount the backup disk and remove it without delay, then sometimes it
> requires an fsck to remount. So I believe that umount does not wait for all
> writes to complete.

This can be observed on USB Mass Storage devices that blink activity
some time even after umount completes...? :-)

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CeDeROM, SQ7MHZ, http://www.tomek.cedro.info