tree e1960be50588ef0a4461fa54609df7ebea95eac5
parent 19d671695e1931ebfd75b2b888778201aefe35ca
author NeilBrown <neilb@suse.de> 1326030401 +1100
committer NeilBrown <neilb@suse.de> 1326231314 +1100

md: notify the 'degraded' sysfs attribute on failure.

We currently only 'notify' changes to the 'degraded' attribute
when it decreases, not when it increases.

Notifying on failure is a little awkward as it happen in
interrupt context.
So instead, notify when we remove the failed device from the array,
which is very soon afterwards.

Reported-and-tested-by: Mikhail Balabin <mbalabin@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>