Re: Raid 5 - not clean and then a failure.

--- On Tue, 25/8/09, Robin Hill <robin@robinhill.me.uk> wrote:

From: Robin Hill <redacted>
Subject: Re: Raid 5 - not clean and then a failure.
To: linux-raid@vger.kernel.org
Date: Tuesday, 25 August, 2009, 9:16 AM
On Tue Aug 25, 2009 at 12:54:49AM
-0700, Jon Hardcastle wrote:

quoted

Guys,

I have been having some problems with my arrays that I

think i have

quoted

nailed down to a pci controller (well I say that - it

is always the

quoted

drives connected to *a* controller but I have tried

2!) anyway the

quoted

latest saga is i was trying some new kernel options

last night - which

quoted

didn't work.

Did they have the same chipset?  I had problems with
PCI controllers on
one of my systems, which turned out to be some sort of
conflict between
the onboard chipset and the chipset on the
controllers.  I found a PCI
card with a different chipset and have had no issues
since.

They are/were cheapy little via ones from 'aria' I got a new one and installed it along side a week ago 1 drive on it to 'test', when my array came to do a scrub a week later I got a whole host of issues. I am not sure what the cause was but now either of the controllers seem work reliably. I have a pci express controller but my kernel doesnt (yet!) support pci express. Do you know of you can get sata 3 on pci? or is it too slow?

quoted

But when i booted up again this morning it said one of

the drives was

quoted

in an inconsistent state (not sure of the *exact*

error message). I

quoted

then kicked off an add of the drive and it started

syncing. It got

quoted

about 5% in and then the second drive in on that

controller complained

quoted

and the array failed.

Is there any hope for my data? If i get a good

controller in there

quoted

will the resync continue? can I try and tell it to

assume the drives

quoted

are good (which they ought to be)?

There's definitely hope.  You can assemble the array
(using the good
drives and the last drive to fail) using the --force
option, then re-add
(and sync) the other drive (I'd recommend doing a fsck on
the filesystem
as well).  I've just had to do a similar thing myself
after two drives
failed (overheated after a fan failure).

Cheers,
    Robin
-- 

Thank you, Thank you, Thank you. I probably wont look at this for a few days now - i find when sitting down without enough time to really see it through is when I get problems! and I am abit busy bee atm!


-----------------------
N: Jon Hardcastle
E: Jon@eHardcastle.com
'Do not worry about tomorrow, for tomorrow will bring worries of its own.'
-----------------------





      
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