Re: consistency detect

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On Monday October 11, mingz@xxxxxxxxxxx wrote:
> :) thanks a lot. so now i know what policy raid1 use. so raid1 will
> randomly choose first drive and sync among all drives. so here comes to
> another question. after a power loss and reboot, raid1 knows that there
> are something wrong and potentially out of sync between two drives. will
> it try to check and make sure two drives are in sync or it just leave
> two drives there with potential unmatched blocks.
> 
> for example, before reboot, a write to location A happen in progress.
> then after reboot. raid1 has no idea on previous write information. it
> just knows something might happened and two drives are possible to be
> out of sync. will it check whole drive to do a resync?
> 

Yes.  It copies all of these first drive onto all of the other drives.

NeilBrown
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