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Forum Topic - ETFS - proven in use?: (2 Items)

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Stefan Koch

12/15/2011 2:59 AM

post90640

Hello,

we consider to use QNX 6.5 with ETFS in a medical product. Our quality measures require to assess the level of quality 
for external (bought) software.

As indicated in my previous post I searched the web for info on how to update the IPL/IFS in the raw partition with only
 few results (e.g. for etfsctl -p option).

Because of this result I got the impression that ETFS is not heavily used - especially on NAND/QNX6.5. Is that true?

What is your experience with ETFS, how reliable is it, how much is it used?

Thanks a lot,
- Stefan

Dan Giorgis

12/15/2011 8:10 AM

post90644

Re: ETFS - proven in use?

Stephan -

We have used ETFS extensively under QNX 6.3.2 and 6.4.1.  I don't have any experience with it under 6.5.0.   

We've used both 512 byte and 2K page NAND parts.

We format our drives with a both a raw partition (for IPL boot) and a formatted partition.  It has been very reliable 
and stable.  

The downside to ETFS
- can't update raw partition from IPL (as you've discovered)
- can't boot using UBoot or other boot loaders
- limited support for large (4K page) NAND parts

Even with the positive experience we've had thus far with ETFS, I would not recommend using it in a new design - if at 
all possible I'd use a managed NAND part.

- Dan

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