Re: Is it possilble to be "delay tolerant" or have "slow dropout" of unavailable components?

[Peter Rabbitson <rabbit+list@xxxxxxxxx>]

Ty! Boyack wrote:
> <snip>   
>
> Right now, without the automation, it is possible, and likely, that an 
> operator cannot respond in time to avoid having the bitmap fill up, and 
> then we are into a long resync.

The bitmap can not "fill-up" - this is by design. It is created by simply 
subdividing the _entire_ array into a number of equally sized regions (the 
exact amount depends on the bitmap size, and the size of every region depends 
on the md device size). Then any time a write operation touches the disk the 
corresponding region is marked as dirty. There might be one write or a 
thousand writes - as long as they all fall within the same region - it is the 
only one which will be resync-ed.

HTH

Peter
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