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.
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