Bug#780941: mdadm.conf: missing explicit hotplug POLICY

[Chris]

Thank you for your valuable note.


Am Mon, 23 Mar 2015 08:11:53 +1100
schrieb NeilBrown <neilb at suse.de>:


> > POLICY domain=default action=re-add
> 
> I do not recommend this as a default setting (otherwise, it would be
> the default).
> 
> You should only set the policy to "re-add" if you believe that path
> failure is significantly more likely than media or mechanism failure.
> 
> i.e. the best choice depends on the particular hardware in use.


By path failure do you mean physical disconnects?

What would be the adverse effect with media or mechanism failure?
Is it something with the failing re-add attempt on reboots?

If re-adds on reboot are bad, maybe this description is better then:


## Allow automatic re-adding of failed devices when they reappear.
## This will however also trigger re-add attempts when rebooting after
## a true media or mechanism failure.
## (Requires a write-intent bitmap.)
#
#POLICY domain=default action=re-add