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

Posted Sep 19, 2009 0:22 UTC (Sat) by quozl (guest, #18798)
In reply to: Log-structured file systems: There's one in every SSD by smoogen
Parent article: Log-structured file systems: There's one in every SSD

... build an SSD from a bunch of flash ... how big would it have to be to
be useful to 'see how it could be done?' ... is a gigabyte enough? you
could take an OLPC XO-1, use the NAND flash therein, with jffs2 ... and
1.3 million of this configuration have been deployed. ;-)

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

Posted Sep 19, 2009 19:53 UTC (Sat) by dwmw2 (subscriber, #2063) [Link] (1 responses)

Indeed. And the kernel already has more than one FTL implementation, which lets you do this silly fake-disk thing on top of raw flash and then use a 'standard' file system on top of that, just like an SSD does.

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

Posted Sep 19, 2009 20:35 UTC (Sat) by dlang (guest, #313) [Link]

part of the reason for doing a open/DIY SSD would be to shame the manufacturers of the commercial ones into improving them.

creating a linux specific software only item won't do that (and because the hardware would then be linux-only it would be more expensive due to the limited production run)

it's also hard to test how a linux software solution would work for a windows or mac access pattern.