> sync the drive once every minute or half a minute. True, this does move
> us towards more synchronous behavior and would cause a performance hit
> for some applications.
No data should get more than about 30 seconds behind by default. With the
-o sync option on ext2fs mounts it should be virtually instantaneous.
> Are you saying that it is not feasible to implement such a system,
> or/and it is stupid and bad to implement such a system?
We have it I think. That you saw a case it didnt work might indicate bugs
elsewhere.
> If we notice that a drive has been removed and have some way of telling
> that there are unwritten buffers/cache for that media, we deliver the
> popup.
popup. How does that work on a machine with no console ?
> Then, when the HUB sees the drive has been reattached, a sync can be
> fired off.
That means if you reconnect having changed it elsewhere you crap bad
data onto the disk. At the very least you would need to read the magic numbers
of the _media_ to be sure its not same drive, different disk
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