SanDisk micro SDHC 8GB card under testing

Joe Pfeiffer joseph at
Fri Jul 11 23:44:50 CEST 2008

Mikko Rauhala writes:
>pe, 2008-07-11 kello 15:17 -0600, Joe Pfeiffer kirjoitti:
>> Well...  using an inode-based filesystem like ext2 or ext3 is a really
>> bad idea, since you end up rewriting some of the blocks a *lot*.
>> Journalling the metadata, as ext3 does it, does make things even worse
>> as you say.  Using a purely journalled FS like jffs2, on the other
>> hand, is a really good idea since it's designed to avoid exactly those
>> flaws.
>SD does wear-leveling. JFFS2 is redundant on those, though probably
>generic leveling isn't quite as efficient than what a leveling
>filesystem can manage on raw flash. (Slapping leveling on leveling isn't
>likely to improve things much, I would think...)

Checking.... you're right.  I could swear I saw early on that the
whole reason jffs2 was used on the GTA01 was because SD didn't do
that.  So anybody know why it was used?

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