Barriers and journaling filesystems
Posted May 25, 2008 6:40 UTC (Sun) by giraffedata
In reply to: Barriers and journaling filesystems
Parent article: Barriers and journaling filesystems
Whether it writes the whole track doesn't matter. It's the order in which it writes the blocks. Does it wait for the beginning of the track to come around and write from start to finish (average time - 1.5 revolutions)? Or does it write starting now (average time 1 revolution)? I presume it's the latter.
Nobody's said anything about ext3 knowing where the blocks are physically, so I don't know why you bring that up. The article just says ext3 updates the journal in logical block number order and suggests that means they tend to go the platter in the same order.
And I've been saying I don't believe that.
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