[CentOS] Any downside to mount -o noatime?

Fri Feb 11 01:49:40 UTC 2022
Jon LaBadie <jcu at labadie.us>

On Thu, Feb 10, 2022 at 05:32:05PM -0800, Kenneth Porter wrote:
>--On Thursday, February 10, 2022 8:03 PM -0500 Matthew Miller
><mattdm at mattdm.org> wrote:
>> relatime has been the default for a long time -- that only updates atime
>> once per some reasonable timeperiod. The wear and tear from that is
>> negligible and you can still get a basic idea of when files where
>> accessed.
>According to the man page for mount, relatime updates atime whenever mtime
>or ctime are updated, or if neither has been updated in the last 24 hours.
>Which is still prohibitive if you're doing an incremental (rsync) backup
>and checking file contents on the "full" backup weekly or monthly.
>The only apps I've found that need atime are tmpwatch and biff, neither of
>which I use.

atime updates that occur when {m,c}time are updated add
no additional burden.

So you are concerned about a single "possible" inode update
once a day?


Jon H. LaBadie                  jcu at labadie.us