Re: fsck on boot...revisited
----- Original Message -----
> On Thu, Jul 25, 2013 at 10:33:56AM -0500, Tim Nelson wrote:
> > ----- Original Message -----
> > > > Does the 'FSCKFIX' option within /etc/default/rcS do what I
> > > > need?
> > >
> > > Yes, but your disks will continue to degrade. One morning you
> > > will wake up to find a dead server, much earlier than you would
> > > otherwise.
> > >
> >
> > How would they continue to degrade? Meaning, what is the difference
> > between the system answering 'YES' to the manual prompts versus
> > someone driving out and doing the same thing? Of course, we're
> > going on the premise that the power situation cannot be fixed, and
> > the solution is to get the best reliability out of the system when
> > it experiences somewhat random/often reboots. I know it isn't
> > ideal...
>
> Every time the disks have been power-interrupted, they degrade a
> variable
> amount ranging from zero to instant-death. The fsck is merely your
> system attempting to repair damage to the logical filesystem riding
> on
> top of those physical disks. It cannot repair damage to the actual
> disks,
> just the filesystem.
>
> You can get a minimally capable UPS for about $50. I'm guessing
> that will pay for itself in terms of people-time in one or two
> trips saved, and will pay for itself in disk replacement in the
> first year.
>
The system in question is running from an SSD, which I assume changes your assumptions quite a bit. With a traditional HDDs, the loss of power causes a head crash, etc which does in turn lessen the life of the drive.
I understand a UPS is the best solution, but let's keep going on this topic based upon power being a variable I cannot control.
Back to the original question(s), how can I make this the most robust system (not of all time, but in this use case scenario), both in data integrity and ability to fully boot?
--Tim
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