Re: scrub implies failing drive - smartctl blissfully unaware

[Phillip Susi <psusi@ubuntu.com>]

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On 11/19/2014 5:33 PM, Robert White wrote:
>> That would be fake raid, not hardware raid.
> 
> The LSI MegaRaid controller people would _love_ to hear more about
> your insight into how their battery-backed multi-drive RAID
> controller is "fake". You should go work for them. Try the "contact
> us" link at the bottom of this page. I'm sure they are waiting for
> your insight with baited breath!

Forgive me, I should have trimmed the quote a bit more.  I was
responding specifically to the "many mother boards have hardware RAID
support available through the bios" part, not the lsi part.

> Odd, my MegaRaid controller takes about fifteen seconds
> by-the-clock to initialize and to the integrity check on my single
> initialized drive.

It is almost certainly spending those 15 seconds on something else,
like bootstrapping its firmware code from a slow serial eeprom or
waiting for you to press the magic key to enter the bios utility.  I
would be very surprised to see that time double if you add a second
disk.  If it does, then they are doing something *very* wrong, and
certainly quite different from any other real or fake raid controller
I've ever used.

> It's amazing that with a fail and retry it would be _faster_...

I have no idea what you are talking about here.  I said that they
aren't going to retry a read that *succeeded* but came back without
their magic signature.  It isn't like reading it again is going to
magically give different results.


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