On Sunday 12 March 2017 08:39:03 Erik Christiansen wrote: > 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. > I was concerned on the pi, but its there for /, but not for /boot. And I was never a fan of mutt, nor is email handled on that machine. It's running 3/4 ton of metal lathe. But I use what I describe as mounts to put the high traffic dir as a mount over the top of an existing dir in order to put, when its fully operational, that directory effectively remoted to rotating media on this machine, useing sshfs. This does of course show up in /etc/mtab. That in turn gives amanda a tummy ache because although its wide open as far as perms go, its reported as no permission despite there being an entry for that directory on the pi's exclude list. So amanda yowl's about it in the emailed backup report, but it does get backed up with the rest of this machine so its no biggie.
> Erik Thanks for the clarification, Erik. > ---------------------------------------------------------------------- >-------- Announcing the Oxford Dictionaries API! The API offers > world-renowned dictionary content that is easy and intuitive to > access. Sign up for an account today to start using our lexical data > to power your apps and projects. Get started today and enter our > developer competition. http://sdm.link/oxford > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Announcing the Oxford Dictionaries API! The API offers world-renowned dictionary content that is easy and intuitive to access. Sign up for an account today to start using our lexical data to power your apps and projects. Get started today and enter our developer competition. http://sdm.link/oxford _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
