The ZFS filesystem Fletcher-checksums all data - perhaps together with
tagging each "page" with its "page number", duno!
This is awesome as it's a quite nice data integrity guarantee: this
guarantees that data is in the right place (so broken sector mapping tables
won't break anything) and is correct!
Does SQLite do the same, what about SQLite do the same, patch?
2015-07-14 12:35 GMT+02:00 David Woodhouse <dwmw2 at infradead.org>:
> On Mon, 2015-07-13 at 21:25 -0400, Donald Griggs wrote:
> >
> > -- One mode does require that power not be removed abruptly from the
> eMMC
> > controller (but they still claim durability even in the face of a kernel
> > panic)
>
> That's true of *all* modes of operation of most MMC and SSD class
> devices. The internal file system ("translation layer" which they use
> to pretend to be a disk is usually horrifically unsafe. We have some
> real horror stories of hooking up a logic analyser to the flash chips,
> and watching what the ?controller actually does during wear levelling
> and garbage collection.
>
> What you actually want is to drive the real flash directly, with none
> of this silly "pretend to be spinning rust" nonsense.
>
> --
> dwmw2
>
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