Ah. Garbage collection for file systems. With screaming, to boot.
Wasn't some work done on log-structured file systems done by DEC some time ago? I can't find a reference to it.
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Log structured fs (including gc, checkpointing, wear-leveling) has been quite prevalent in the embedded linux world for several years already e.g. jffs2 / yaffs / logfs / ubifs etc.
(Of course these typically target raw NAND flash via MTD / UBI layer, so typically aren't directly suited to the SSD block device abstraction)
> Wasn't some work done on log-structured file systems done by DEC some time ago? I can't find a reference to it.
Didn't Ousterhout (who, amongst other things, worked on a log based file system) work there on sabbatical?
He's mentioned in the article along with another guy.
> The concept was developed by John Ousterhout of TCL fame and Fred Douglis.