S ANCELOT wrote:
>
> A robot machine CPU could need hard disk storage .
>
> In industry , the robot machine could be shutted down on main
> cabinet power .
>
> This means big problems with a hard disk at next boot !!!!
Why not use the same approach as when running Linux from a CD?
(Like installers usually do.) Use a RAM disk for root file system.
> How to preserve linux system data integrity in hard disk and warranty
> that linux will
> reboot without problems in this kind of system ? ( UPS are not a
> solution !)
>
> This means unattended reset cycles should start linux as the first day .
Well, if that means you don't need to store data on the hard drive,
the RAM disk root system is all you need.
> I think some people would be concerned. (...)
I'll need to solve this for our instruments, as users are not expected
to
wait for a system shutdown before turning off power. And we don't want
to
fix crashed disks after power failures, someone pulling the wrong plug
and
such things... I'll use a RAM disk based setup and have a separate
filesystem on the HD that is mounted as read-write only when a changed
configuration needs to be saved, and then unmounted again.
//David Olofson
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