On 11.03.17 16:42, Gene Heskett wrote:
> On Saturday 11 March 2017 12:02:36 dragon wrote:
> 
> > I doubt that you will ever hit the end of life on a quality SD card,
> > especially a large size one. The writes that you are doing, and thus
> > the number of blocks, are TINY compared to what the cards were
> > designed for... photos and videos. You can also run a flash file
> > system instead of ext4 if you like. Checking that noatime is set for
> > the filesystem would have a far greater effect than all of the writes
> > that you will ever do in daily use. While true at one time, this whole
> > wearing out flash storage thing is almost a non issue for use cases
> > like this nowdays.
> >
> How do I check that, and with the rube goldberg's hired hand boot configs 
> used on the pi, how would I set the noatime option?

AIUI, as relatime has long been the default (since kernel 2.6.30), you
don't really need to do anything. Given that relatime only updates the
access time if the previous access time was earlier than the current
change time, there'll be slightly more writes than with noatime, but a
lot less than with neither - and noatime breaks applications like mutt.

If you do want to change it, then in /etc/fstab, add noatime to the
comma-separated options in column 4. Before the relatime kernel default
change, that was said to give a 10% performance boost. It shouldn't do
anything noticeable now, I figure.

If there's more recent info than that, it'd be interesting to hear.

Erik

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