[arm-allstar] SD Cards

[David McGough]

Hi Willem,

Wear leveling (assuming the card does actually implement it--they're 
supposed to!!) takes place at the SD card hardware level, not the 
"Linux" level (the mail root filesystem is ext4). So, not expanding the 
filesystem shouldn't negatively impact wear leveling. (Right?)

73, David KB4FXC


On Thu, 3 Dec 2015, Willem Schreuder wrote:

> On Thu, 3 Dec 2015, Doug Crompton wrote:
> 
> > Also as I mentioned on the web page unless you have a compelling reason 
> > it is NOT a good idea to expand the filesystem on these cards after 
> > installing the image. Doing so makes total image backup a time consuming 
> > process especially on 16GB and larger cards and does nothing to improve 
> > performance or longevity.
> 
> Doug, while I agree regarding performance and backup, I don't know if a 
> agree about longevity.  At least in principle, wear leveling should give 
> you a longer life on a larger file system for the same volume of data 
> written, should it not?  What I will grant you is that the SD cards in 
> rPi's that I have lost usually was not due to wear, but due to power 
> transient and those kinds of catastrophic events.  However, all else being 
> equal I think there is a case to be made that increasing the file system 
> size.  Am I missing something?
> 
> 73 -Willem
> 
> ================================================================
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