On Tue, Jan 6, 2015 at 6:37 PM, Gary Greene <ggre...@minervanetworks.com> wrote:
>
>
> Almost every controller and drive out there now lies about what is and isn’t
> flushed to disk, making it nigh on impossible for the Kernel to reliably know
> 100% of the time that the data HAS been flushed to disk. This is part of the
> reason why it is always a Good Idea™ to have some sort of pause in the shut
> down to ensure that it IS flushed.
>
> This is also why server grade gear uses battery backed buffers, etc. which
> are supposed to allow drives to properly flush the data to disk. There is
> still a slim chance in these cases that the data still will not reach the
> platter before power off or reboot, especially in catastrophic cases.
>
This was a reboot from software, not a power drop. Does that do
something to kill the disk cache if anything happened to still be
there?
--
Les Mikesell
lesmikes...@gmail.com
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