Re: Database on JFFS2?

["Jörn Engel" <joern@wohnheim.fh-wedel.de>]

On Tue, 15 April 2003 10:06:51 +0200, Esben Nielsen wrote:
> 
> Our flash is NOR (Intel statoflash). What we a going for is a standeard SQL 
> solution  - so it isn't enough that the filesystem has a database-like 
> behaviour.
> 
> Someone from this list pointed out sqlite to me yesterday. I am looking into 
> that now.  It has a log system. The most optimal would be if the database 
> could be tuned not to write too often and on other hand when it does it is 
> flush to flash immediately to prevent datacorruption. I am not quite sure how 
> to make it work with JFFS2. DoesJFFS2 write immediately on fsync() or it is 
> buffered in ram making the database believe it is safe to delete it's 
> transactionlog?

afaik jffs2 writes immediately to flash, even without fsync, as long
as you use NOR. NAND holds a buffer for 2s, I'd have to check when
this is flushed exactly.

Jörn

-- 
Those who come seeking peace without a treaty are plotting.
-- Sun Tzu