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Re: [dm-devel] Hard drives shutting themselves off in RAID mode


Next silly question then:
It can't be the power supply not coping with a large number of disks seeking simultaneously? If the voltage drops too much some disks might shut down.

Probably unlikely, but it would yield a simple solution..


Rune Sætre <rune saetre netcom-gsm no>
NetCom as

On Thu, 15 Jun 2006, Tom Wirschell wrote:

On 15 Jun 2006, Greg Freemyer wrote:

In 2.6.17-mm there is a huge SATA error handler (EH) rewrite.  Is is
planned to hit the stable Linus kernel with 2.6.18 towards the end of
the summer, but even then it will only have a few of the actual
drivers modified to use the EH infrastructure.

Damn. I read about this in the LWN.net Kernel pages for may 17th. I
figured that once it was in, everything would automagically be using it
too (i.e. the drivers wouldn't need to be updated to the new system).
Guess I was a tad naïve about that.
I tried 2.6.17-rc5-mm2 and ran into some BUG()s which went away when I
just stuck to 2.6.17-rc5.

I would repost your problem to the lkml-ide list and see if they think
that the new EH should help you, and when/if your controller will be
using the new EH infrastructure.

Looks like a good idea, thanks!
Don't let that keep anybody on this list who might have an explanation
for this be deterred from responding though. :)

Also, there is a ton of testing going on with the new EH, so if your
willing to be a guinea pig, I'm sure you will get a lot of support
from the dev. team and get your specific driver updated ASAP.

I've been sitting on a non-functional array for almost 3 months now.
Don't mind having weird issues a little longer if it means things will
end up working nicely in the end (or I at least get a sensible
explanation for what's wrong, so I know what I must do to fix it).

Kind regards,

Tom Wirschell

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