Re: Anybody know about nforce4 SATA II hot swapping + linux raid?

From: Molle Bestefich
Date: Sat Oct 08 2005 - 09:28:42 EST

Andrew Walrond wrote:
> I need to deploy some very resilient servers with hot swapable drives.
> Before I place an order, I need to know whether sata II hot swapping is up to
> scratch in the linux kernel, and whether it works nicely with linux software
> raid (which I already use/am familiar with).
> Any knowledge greatfully accepted :)

IDE hotswap has never worked (OOTB at least) in Linux, and based on my
experience it never will. Seems the IDE folks doesn't care a bit
about it. (No offence meant. Just keeping it real.)

So if you really need this, here's the opportunity to make a whole lot
of people happy by implementing it yourself. You'll probably need a
lot of time on your hands - there's a very real chance that the IDE
maintainers are too busy or whatever to answer any newbie questions
you might have about how to attack the IDE layer.

Tejun Heo wrote:
> If you're looking for stability/resilience for production machine,
> IMHO libata isn't still quite ready.

I disagree...
I've used it for TBs of data without any problems.

OTOH, with the regular ATA stuff I've experienced loads of IRQ
problems, crashes and hangups.
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