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Log-structured file systems: There's one in every SSD

Log-structured file systems: There's one in every SSD

Posted Sep 23, 2009 0:48 UTC (Wed) by dwmw2 (subscriber, #2063)
In reply to: Log-structured file systems: There's one in every SSD by butlerm
Parent article: Log-structured file systems: There's one in every SSD

Not really.

The 'read and then reprogram elsewhere from internal buffer' facility is all very well in theory, but your ECC is off-chip. So if you want to be able to detect and correct ECC errors as you're moving the data, rather than allowing them to propagate, then you need to do a proper read and write instead.

Linux has never bothered to use the 'copy page' operation on NAND chips which support it.


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