Tomasz Chmielewski wrote:
Performance is only one factor in the equation. Other factors are: cost and reliability.Yeah, that's bad. But if you have a bad FTL, surely there is not guarantee
I speak from experience: flash-based block devices tend to have poor wear-levelling (at least Transcend IDE-flash disks).
To reproduce:
- format a 2 GB Transcend IDE-flash disk with ext3
- write a small file (50-100 kB)
- update that file ~several hundred thousand times - as you finish, IDE-flash disk will have 200-300 badblocks
a flash FS will help? Isn't it better to use better hardware?
We did some experiments with MMC cards and we were unable to wear them
out with re-writing the same sectors again and again. This suggests there
_is_ better FTL hardware then that USB stick you was using.
Anyway, your original mail said Logfs can work with block devices. My answer -
UBIFS too, but this is very strange to do this IMO. But OK, it might is not
senseless, sorry for the wording. :-)