SanDisk micro SDHC 8GB card under testing
Joe Pfeiffer
joseph at pfeifferfamily.net
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?
More information about the community
mailing list