Rebuild after catastrophic event?

Rebuild after catastrophic event?

[Brad Campbell]

G'day all,

With 2.4 kernels I recall that md would resync an array after a catastrophic event (like a power 
failure or kernel oops/panic). 2.6 does not seem to do that and just merrily fires up the array and 
continues on its way. Is there a reason for the change in behaviour?

I'm wondering if I should force a resync with mdadm after such an event?

I know it used to resync, and the server at work (running 2.4.26) certainly does on next powerup.

The only other change is I recall I used to have md autodetect the arrays on startup, and now I use 
mdadm to start them, but that should not matter. (should it?)

Regards,
Brad (who came home to find a paniced box and thus must ask the question)