Oh, I thought this was a backup system. I always ramp up the speed on
min & max to have the resync & reshapes finish fast, but at the loss
of performance during that.

You mentioned that you've unmounted the filesystem, so why does it
make a different if you max the speed? Or do you have other services
running?

I think at the time I needed a new mdadm, I downloaded 3.0 which is
the stable one for now (3.1 was pulled -- donno about 3.1.1).

On Wed, Dec 16, 2009 at 11:06 AM, Leslie Rhorer [off-list ref] wrote:

quoted

Have you made sure that the value of
/proc/sys/dev/raid/speed_limit_min is high enough? (200000 means 200

High enough?  Wouldn't a higher speed limit mean more stress on the systems?
Its value is 1000.

quoted

MB/s) along with /proc/sys/dev/raid/speed_limit_max?

It's 200,000

quoted

I interrupted an array resyncing a couple of times without issues.
Only one time I interrupted an array during growth process and I had
an old version of mdadm (2.6.3) which didn't support resuming that. I
think Neil told me that 2.6.9 is the minimum requirement to resume.

It's 2.6.7.2.  Debian does not admit new software into its distro until they
are rock hard stable, unless it is a bug fix release.  I guess I'll have to
wait a few more days.

-- 
       Majed B.
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