Comment 5 for bug 1289582

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Clint Byrum (clint-fewbar) wrote :

FYI, the reason mv doesn't fix the problem entirely is that there is no synchronous connection between the mv and the growth of the loopback file. One hypothesis is that ext4 extents cause a large section of the file to be pre-allocated all at once.

It kind of doesn't matter though because the heuristic also just assumes that images will be ~ 2G.. which is clearly false.