On Thu, Sep 25, 2014 at 7:21 PM,  <[email protected]> wrote:
> I think we are having SD card failures in the field.  We are waiting for
> them to come back for inspection.
>
> In the meantime, I'm doing some investigation...
>
> I read the "SD Card Corruption on Read Only File System" post and while it
> had a lot of good information, it did not answer a basic question...
>
> Is wear leveling utilized with MySQL on SD (and FLASH memory).  I suspect
> that it is not, in that wear leveling continues to write new and updated
> FILES sequentially on the disk.  As I understand it, MySQL does not write a
> whole new file.  If so, wear leveling will not be used for MySQL files.  Can
> you confirm or deny this.
>
> Also, what is the write cycle lifetime of the on-chip memory for the Beagle
> Bone Black? It would be interesting to compare it to the SD card.
>
> Thanks,
>
> Jeremy


What filesystem are you using on your sd card?

Chris

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