On 06/16/2011 03:35 PM, Kevin Wolf wrote:
* Image streaming is a normal image file plus copy-on-read plus a background task that copies data from the source image
Or a block-mirror started in degraded mode.
* Live block copy is a block-mirror of two normal image files plus a background task that copies data from the source image
= block-mirror started in degraded mode
The right solution is probably to implement COR and the background task in generic block layer code (no reason to restrict it to QED) and use it for both image streaming and live block copy. (This is a bit more complicated than it may sound here because guest writes must always take precedence over a copy - but doing complicated things is an even better reason to do it in a common place instead of duplicating)
Or in a block-mirror block format driver - generic code need not be involved.
-- error compiling committee.c: too many arguments to function
