[Arm-dev] File system corruption

[Stephan GUILLOUX]

On 13-Dec-18 18:09, Fred Gleason wrote:
> On Dec 13, 2018, at 11:54, Stephan Guilloux 
> <stephan.guilloux at crisalid.com <mailto:stephan.guilloux at crisalid.com>> 
> wrote:
>
>> Stress test still running on reputable brand with no PB, after 6 or 7h.
>>
>> During this stressing session, we found a few broken SD, from another 
>> reputable brand.
>> Not all cards, though, but enough to put some confusion... ;-)
>
> Well, remember, we are dealing with flash RAM here. After enough 
> write/erase cycles, it *will* wear out. The goal is to optimize the 
> overall system to get maximum lifetime out of the media. For example, 
> on our production setups we do things like putting ‘/var/log’ on tmpfs 
> (it doesn’t matter for the particular application that the log data 
> evaporates after reboots). That greatly reduces wear on the media, 
> while still allowing log data to be accessed during a session for 
> debug purposes.
/tmp, /var/log, /var/tmp (and a few others) need TMPFS, yes.

>
> Cheers!
>
>
> |----------------------------------------------------------------------|
> | Frederick F. Gleason, Jr. |              Chief Developer         |
> |                           |              Paravel Systems         |
> |----------------------------------------------------------------------|
> | You can never tell which way the train went by looking at the       |
> | tracks.         |
> |                                             -- Kramer's Law         |
> |----------------------------------------------------------------------|
>
>
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