[linux-lvm] LVM mirroring questions...

[Jayson Vantuyl]

On Apr 11, 2008, at 9:18 AM, Luca Berra wrote:
> this is not entirely correct.
> md has a bitmap feature that is used to track which blocks are out of
> sync.
For the record, this is called a "write-intent bitmap".  It's very  
handy, although to make it really perform you need to put it on a  
separate spindle from the data (which is supported).  Otherwise the  
extra seeks cause quite an impact on disk performance.



-- 
Jayson Vantuyl
Systems Architect
Engine Yard
jvantuyl at engineyard.com
1 866 518 9275 ext 204

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