> > > HA is half of the key. Fast fsck is the other half. You can't avoid
> > > the fact that the OS scribbling on your dual-ported disks is a single
> > > point of failure. After that, do you really want to bring up a backup
> > > computer without an fsck?
> >
> > So isn't that obviously NOT the right way to do it?
>
> Duh. I am trying to prove that fast fsck is good for everyone, not
> that it's the right way to get high availability.
But given that HA is the argument, you obviously failed.
> > For situations like that, you want completely separate hardware. On
> > separate UPSen. On separate power lines. Probably in different cities.
>
> Not necessarily. There are many ways to approach high availability.
There are two basic strategies (and you want both, of course):
1. Make sure hardware and software is stable.
2. Make sure hardware and software is redundant.
We're currently discussing 2. None of these two can be replaced by
anything else.
> > Dual-ported disks is not a desaster plan.
>
> You'd be surprised how many people use them that way. However, even
Maybe I would, given hard disks are one of the system components I've seen
fail more often. Then again, maybe I would not, given how often I've seen
people behave rather idiotically.
> with completely separate hardware in completely separate cities, you
> will probably find that you will be happier if fsck is fast.
Yes, but it will have ceased to be anything but an annoyance.
> > Fsck times is just about the least important thing in that situation,
> > because if that's what you're waiting for, you didn't do your homework.
>
> You haven't listened to what I said, I suspect.
You suspect wrongly.
> And many other people with less need for high availability still have
> need for fast fsck.
But you tried to argue that HA needs it. It doesn't.
> Please, let's stop this pointless "discussion". You (and several
> others) are arguing against a strawman.
No, I'm arguing against a specific argument, namely that it's something
you need for HA. Which is just plain wrong.
>Fast fsck is good. Everyone
> benefits from it.
I don't think this was ever in doubt.
MfG Kai
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